Oakland Whole Home Electrification Decision Pack
Heat Pump HVACHeat Pump Water HeaterEV Charger InstallationSolar PanelsBattery StorageElectrical Panel Upgrade
What this pack covers
This Decision Pack covers a coordinated Heat Pump HVAC, Heat Pump Water Heater, EV Charger Installation, Solar Panels, Battery Storage, and Electrical Panel Upgrade project in Oakland, CA.
It assembles cost ranges, incentive eligibility, permit requirements, and the questions to ask before signing a contract. Every dollar figure and incentive shown is dated and sourced.
Your goal in one sentence
Sequence a whole-home electrification in Oakland across heat pump HVAC, heat pump water heater, EV charging, solar plus battery, and electrical panel work so panel capacity is sized once for the full future load, City of Oakland Planning and Building permits and trades are coordinated under a single project lead, knob-and-tube wiring and Craftsman envelope conditions are assessed upfront, BAAQMD Rule 9-4 and 9-6 timing is checked, PSPS-resilience backup-loads drive battery sizing, and incentive reservations (BayREN Home+; SGIP RSSE waitlist position — the only SGIP tier accepting new applications as of 2026; TECH and HEEHRA waitlist status) are stacked in the right order before equipment is delivered.
Recommended sequence
- Electrical Panel Upgrade — No prerequisites within this pack.
- Heat Pump HVAC — Depends on prior steps: Electrical Panel Upgrade
- Heat Pump Water Heater — Depends on prior steps: Electrical Panel Upgrade
- EV Charger Installation — Depends on prior steps: Electrical Panel Upgrade
- Solar Panels — No prerequisites within this pack.
- Battery Storage — No prerequisites within this pack.
Who to contact
| Who | Why | What to ask for |
|---|---|---|
| Electrification-focused HVAC contractor | Designs the heat pump HVAC system and handles ducting, load calculations, rebates, and permits. | Gas furnace to central heat pump conversion, Manual J load calculation, duct assessment, rebate handling. |
| Licensed electrician | Validates panel/service capacity for future electric load; recommends panel upgrade vs smart load management. | Panel size, service size, formal load calculation, upgrade vs load-management options. |
| Heat pump water heater contractor / plumber-electrician team | Heat pump water heaters need space, condensate drain, airflow, and often a dedicated electrical circuit. | Gas tank to heat pump water heater quote, location assessment, electrical requirements, rebate paperwork. |
| Licensed electrician or EV-charger-certified contractor | Sizes the charger, runs the dedicated 240V circuit, handles permit and inspection. | Level 2 charger model, dedicated 240V circuit, permit handling, load-share strategy for multi-EV households. |
| Solar + battery installer | Models solar production, battery behavior, NEM 3.0 economics, backup loads, and EV charging impact. | Solar scenario, battery scenario, future load model, backup-loads plan, EV charging plan. |
Opening script to send contractors
Hi, I'm in Oakland, CA and planning a project that includes Heat Pump HVAC, Heat Pump Water Heater, EV Charger Installation, Solar Panels, Battery Storage, Electrical Panel Upgrade. I am looking for a quote that includes: 1. Heat Pump HVAC 2. Heat Pump Water Heater 3. EV Charger Installation 4. Solar Panels 5. Battery Storage 6. Electrical Panel Upgrade Please tell me: - Will you perform a formal load calculation (Manual J for HVAC, Article 220 for electrical)? - Are you familiar with Oakland permits and any local rebate programs? - Can you give line-item pricing and separate confirmed incentives from assumed incentives? - Who handles permits, inspections, and rebate paperwork?
Technical basics in plain English
Panel size: 100A, 125A, 150A, 200A
Your electrical panel is the main entry point for electricity into your house. The 'A' means amps. More amps means more total electrical capacity. 100A is older and may not support adding heat pump + water heater + EV charger together without an upgrade or smart load management. 125A/150A is middle ground; could work with efficient equipment and a real load calculation. 200A is usually the cleanest path, but not guaranteed.
Ask: What is my panel size, and can you show me the load calculation that proves this setup is safe?
Load calculation
A load calculation is not the same as guessing. It is a code-based calculation that estimates whether your panel and service can safely carry all major electrical loads. A qualified electrician or contractor should be able to explain whether you need a panel upgrade, a service upgrade, or smart load management instead.
Ask: Are you doing a formal electrical load calculation, or just eyeballing the panel?
120V vs 240V
Normal outlets are usually 120V. Large appliances often use 240V, like a dryer or EV charger. Many heat pump HVAC systems, EV chargers, and some water heaters need 240V.
Ask: Which parts of this project require 240V?
Smart load management
Smart load management lets devices avoid running at full power at the same time. For example, the EV charger may slow down while the heat pump or water heater is running. This can sometimes avoid an expensive panel or service upgrade.
Ask: Can smart load management avoid a service upgrade while still supporting future loads?
Manual J load calculation (HVAC)
Manual J is the standard HVAC sizing calculation. It accounts for home size, insulation, windows, orientation, and ductwork. A good HVAC contractor performs Manual J before sizing the equipment; bad contractors just match the existing furnace tonnage.
Ask: Will you perform a Manual J load calculation before sizing the equipment?
Battery backup: whole-home vs essential-loads
Whole-home backup tries to power almost everything during an outage. Essential-loads backup powers selected circuits (refrigerator, internet, lights, some outlets). Whole-home backup costs more and drains batteries faster. Essential-loads backup is usually more economical.
Ask: Are you quoting whole-home backup or essential-loads backup? Which specific circuits will be backed up?
Specific questions to ask
Questions for HVAC contractors
| Question | Good response | Bad response |
|---|---|---|
| Will you perform a Manual J load calculation before sizing the heat pump? | Yes. We calculate heating and cooling load based on home size, insulation, windows, orientation, ductwork, and infiltration. | We just replace the existing furnace with the same tonnage system. |
| Will you inspect ducts before specifying the heat pump? | Yes. We inspect duct size, leakage rate, return air paths, and airflow because heat pumps need good airflow at moderate static pressure. | Ducts are always fine; no need to check. |
| How do you decide system size in tons or BTU? | We explain tons and BTU using Manual J inputs, not just square footage. | We use 1 ton per 500 square feet as a rule of thumb. |
| What refrigerant does the system use, and is it compliant with current EPA rules? | We specify the refrigerant (R-454B or R-32 for new systems after the EPA A2L transition) and confirm it meets current code. | Refrigerant does not affect homeowners. |
| Are you a TECH Clean California enrolled contractor, and is the program currently funded for heat pump HVAC? | We verify current TECH Clean California program status (single-family Phase I has been fully reserved since November 2025) and explain whether it applies before signing. | TECH always pays out; assume the rebate is yours. |
| Does my household income make us eligible for HEEHRA, and what does that involve? | We confirm income eligibility (below 80 percent AMI or 80 to 150 percent AMI), explain pre-approval is required, and verify program status (Phase I single-family is currently fully reserved per CEC as of 2026-02-24). | HEEHRA covers everyone; you qualify automatically. |
| How does BAAQMD Rule 9-4 affect a like-for-like natural-gas furnace replacement at this Oakland address? | BAAQMD Rule 9-4 (amended March 15, 2023) sets a zero-NOx standard for new residential furnaces sold or installed in the Bay Area effective January 1, 2029. We confirm the effective date against your appliance class and timing, document the citation in writing, and walk through whether a heat-pump path avoids a regulatory dead-end before the cutover. We do not assume the rule has already kicked in for furnaces; we read the actual schedule. | BAAQMD rules don't affect Oakland homeowners. |
| Does BAAQMD Rule 9-6 affect a gas water heater I'm leaving in place during the HVAC replacement? | BAAQMD Rule 9-6 sets a zero-NOx standard for new residential and small commercial water heaters under 75,000 BTU/hr effective January 1, 2027. The rule applies to new units sold or installed; it does not retroactively force you to remove a working gas water heater. We document the effective date and let you decide whether to bundle the HPWH switch with the HP HVAC project given the upcoming cutover. We do not pressure-sell the bundle on a rule that has not yet taken effect. | Rule 9-6 forces you to remove your gas water heater immediately. |
| How do you size differently for Oakland Hills vs flatland Oakland given the East Bay summer heat? | Oakland Hills (Montclair, Skyline, Joaquin Miller) summer design temperatures run 5-10 degrees F warmer than flatland Oakland (Lake Merritt, West Oakland, Fruitvale) and materially warmer than coastal SF. We use ACCA Manual J 8th Edition with the ASHRAE 99 percent heating design value (around 37-40 degrees F for the East Bay) and the cooling-load demand for the actual neighborhood. We do not use SF coastal sizing for an Oakland Hills home, and we do not use East County inland sizing for a Berkeley-border flatland home. We share the Manual J output. | We use a 1-ton-per-500-square-feet rule of thumb. |
| We're in an older Craftsman or 1920s bungalow. How does that change your Manual J assumptions and equipment choice? | Older East Bay Craftsman and bungalow homes typically have minimal wall insulation, single-pane original wood-sash windows or first-generation replacements, and sometimes unconditioned crawl spaces and attics. We adjust the envelope inputs in Manual J accordingly rather than using a 2025 build assumption. We often recommend an envelope tune (attic insulation, ducting where feasible, sealed crawl space) alongside the heat-pump install so we are not oversizing to overcome an avoidable leak. We share both the unimproved and improved Manual J runs. | Older homes need more tonnage; we just oversize. |
| Given Oakland's climate, is dual-fuel (heat pump plus gas backup) worth it or should we go all-electric? | East Bay heating design temperatures rarely fall below the mid-30s F. A modern inverter-driven cold-climate heat pump holds rated capacity well within Oakland's range; a gas backup is usually unnecessary in this climate. The choice is driven by whether you want to retain a working gas furnace for resilience during PG&E outages, what BAAQMD Rule 9-4 timing means for your replacement window, and whether you have an oversized cooling load. We model both options and let you decide. | Always keep a gas backup; heat pumps fail in the cold. |
| Which refrigerant are you specifying and what does A2L safety mean for an Oakland install? | Effective January 1, 2025, AIM Act-driven federal rules require new residential heat pumps to use R-454B or R-32 (both A2L mildly-flammable refrigerants) rather than R-410A. Manufacturers have shifted accordingly. A2L refrigerants are safe when installed per manufacturer instructions; indoor unit charge limits, leak-detection sensor requirements on ducted systems, and equipment-room ventilation rules apply. We document the refrigerant, charge, and any required leak-detection sensor in the proposal and confirm Oakland P&B will sign off. | R-410A is fine; we'll just use that. |
| Where will the outdoor unit go and does Oakland have a noise ordinance to worry about? | Oakland Municipal Code Chapter 8.18 sets noise limits at residential property lines, typically 60 dBA daytime and 45 dBA nighttime. A typical modern inverter heat pump outdoor unit runs 55-65 dBA at 3 feet; with setback distance from the property line, sound-isolation pads, and orientation away from neighbor bedrooms it generally meets Oakland's limits. We document the unit's sound rating, the proposed setback, and any sound-isolation hardware in the proposal. We do not place the unit somewhere we have not verified meets the ordinance. | Just put it anywhere; Oakland doesn't enforce noise. |
| Beyond Manual J, do you run Manual S and Manual D and do you share the outputs? | Manual J sets the load; Manual S selects the right equipment to meet that load (capacity, modulation range, defrost behavior); Manual D sizes the ducts to deliver the airflow without static-pressure penalties. Many East Bay retrofits inherit undersized return ducts that limit airflow no matter the equipment. We run all three and share the outputs, including any required duct modifications as a line item. | Manual J is enough; the other two are overkill. |
| What does commissioning look like at the end of the job and do you give me the report? | At commissioning we verify static pressure with a manometer (target around 0.5 in.w.c. on most residential ducted systems), set airflow via measurement at each register, verify charge by superheat or subcooling per manufacturer spec for R-454B or R-32, log compressor amp draw, and confirm thermostat communication. We provide a signed commissioning sheet with the measured values. Without commissioning a 'right-sized' system can still underperform 20-30 percent. | Commissioning is just an upsell; modern equipment self-tunes. |
| What warranty terms apply and does Oakland's proximity to the Bay affect equipment lifespan? | Typical residential warranties on R-454B / R-32 heat pumps run 10 years parts and 1-2 years labor when registered with the manufacturer within 60 days; some platforms (Mitsubishi Diamond Contractor, Daikin Comfort Pro) extend labor to 10-12 years when installed by certified contractors. Outdoor units within 1-2 miles of the Bay shoreline (West Oakland, Jack London) see salt-air exposure; we either specify the manufacturer coastal package (corrosion-resistant coil and fins) or document why standard equipment is appropriate. We register the warranty for you and share the confirmation. | Warranty is automatic; the salesperson handles it. |
| If we go all-electric, is there a backup-heat strategy or is the heat pump on its own? | Modern cold-climate inverter heat pumps hold rated capacity to about 5 degrees F or lower, which is far below any Oakland design condition. Auxiliary heat (electric strip) is typically not needed for Oakland's climate; we leave it out of the install unless Manual J shows a specific deficit at design conditions. Strip heat is expensive to run and adds peak demand. If you are concerned about resilience during a deep cold snap, a small ductless head in the main living space provides redundancy without strip heat. | Always add strip heat; you can never have too much backup. |
| We are in the Oakland Hills WUI zone. Does that affect outdoor-unit siting or materials? | Oakland Hills addresses in the CAL FIRE Very High Fire Hazard Severity Zone (Montclair, Skyline, Joaquin Miller, Piedmont border) fall under California Residential Code Chapter R337 for wildfire-resistant construction. Outdoor equipment siting against eave overhangs, near combustible landscaping, or in zone-0 (the first 5 feet of defensible space) needs ignition-resistant placement and sometimes spark-arrestor screening on intake louvers. We document the FHSZ designation against the address, site the unit per R337 setbacks, and use ignition-resistant materials where required. | WUI rules don't apply to mechanical equipment. |
Questions for water-heater contractors
| Question | Good response | Bad response |
|---|---|---|
| Where will the heat pump water heater go, and does the location have adequate air volume? | We assess garage and utility room candidates (heat pump water heaters need roughly 700 to 1000 cubic feet of conditioned air around the unit, or a ducted exhaust path), evaluate noise impact, and confirm clearance per the manufacturer's install manual. | Any closet works for a heat pump water heater. |
| How will you handle the condensate drain? | We route a gravity drain to an approved disposal location or use a condensate pump; we explain freeze risk and overflow safety per CPC, and itemize the work in the quote. | Condensate isn't really an issue. |
| How will you size the tank, 50, 65, or 80 gallons? | We size from household occupancy, peak-hour fixture demand (showers, dishwasher, clothes washer simultaneity), and recovery preferences. A typical 3-to-4-person household lands on a 65 or 80 gallon unit to compensate for slower heat pump recovery vs gas. | Match the gallons of whatever tank is there now. |
| What is the first-hour rating of the proposed unit, and is it sufficient for our peak demand? | We provide the manufacturer's first-hour rating (gallons delivered in the first hour of peak use) and compare it to your typical morning or evening peak demand. We may suggest a larger tank or a mixing valve strategy when the rating runs tight. | First-hour rating isn't really relevant. |
| What is the Uniform Energy Factor (UEF) of the proposed unit, and how does it affect rebate eligibility? | We document the UEF on the spec sheet (modern heat pump water heaters typically range 3.0 to 4.0+ UEF). Many rebates require UEF at or above a threshold (often 3.0) or a NEEA Advanced Water Heater Specification tier rating; we confirm the eligible tier before submitting. | UEF doesn't matter for rebates. |
| Will the install be ambient (drawing from the room) or ducted? | Ambient installs are simplest and cheapest in a garage or large utility room. Conditioned-space installs may need ducted intake or exhaust to avoid cooling the living space; ducting adds labor and material cost. We model the tradeoff in the quote. | Ducting is always required. |
| What operating modes does the unit support, and which one do you recommend by default? | Most modern units offer heat-pump-only (most efficient), hybrid (heat pump plus resistance backup on high demand), and resistance-only (emergency or cold-snap) modes. We recommend hybrid as a default and explain how mode choice changes runtime and operating cost. | Modes are a gimmick; leave it on resistance. |
| What is the manufacturer warranty on the tank, the heat pump compressor, and labor? | Most residential heat pump water heaters carry a 10-year tank warranty and a separate compressor warranty (often shorter). We provide the spec sheet and itemize our labor warranty separately so they aren't confused. | Lifetime warranty; no fine print. |
| If we are switching from gas, how will you decommission the gas line? | We cap and label the abandoned gas line per CPC, pressure-test or visually verify the cap, and remove the abandoned T&P discharge pipe if it conflicts with the new install. The work is itemized in the quote. | Just leave the old gas line where it is. |
| What is your post-install commissioning checklist? | Commissioning includes pressure testing the plumbing, verifying the T&P relief valve and discharge routing, confirming the condensate drain runs free, setting the default operating mode, and walking through the app and any user controls. | We turn it on and leave. |
| What is the expected recovery time after a high-demand event, like back-to-back showers? | In heat-pump-only mode, recovery is slower than gas (typically 2 to 3 hours to reheat a depleted tank). Hybrid mode shortens that. We explain mode tradeoffs and may recommend a larger tank or a mixing valve strategy when recovery is a concern. | Recovery is the same as gas; no tradeoff. |
| How does BAAQMD Rule 9-6 affect our gas water heater replacement timing? | BAAQMD Rule 9-6 sets a zero-NOx standard for new residential and small commercial water heaters under 75,000 BTU/hr effective January 1, 2027. New gas water heaters sold or installed in Oakland after that date must meet the zero-NOx standard, which effectively eliminates the standard gas tank water heater from the Bay Area market. Existing units can stay in service; the rule does not retroactively require removal. We document the cutover date and let you decide whether to swap to a HPWH now or wait. A HPWH sidesteps the rule entirely. | Rule 9-6 doesn't affect homeowners. |
| What Uniform Energy Factor (UEF) and NEEA tier do we need for rebate eligibility? | NEEA AWHS (Advanced Water Heater Specification) Tier 3 units have UEF >= 3.3 and qualify for BayREN Home+ at the highest rebate tier; Tier 1 has UEF >= 2.0 and qualifies for the basic rebate. Rheem ProTerra (UEF 3.7-4.0 depending on model), A.O. Smith Voltex AL (UEF 3.45), Bradford White AeroTherm (UEF 3.39), and Stiebel Eltron Accelera 300 (UEF 3.05) all qualify. Sanden CO2 has its own high UEF. We list the UEF and NEEA tier in the proposal so the rebate path is visible. | All HPWH qualify for the same rebate; UEF doesn't matter. |
| How do you size the HPWH for the household and what does first-hour rating (FHR) mean? | FHR is the gallons of hot water the unit can deliver in the first hour starting from a full tank; it accounts for recovery while drawing. For a 2-3 person Oakland household we typically size 50 gal nominal tank with FHR around 60-65 gal; for 4-5 persons we go 65 or 80 gal nominal with FHR 80+. Tank size alone is misleading because HPWH recovery is slower than gas; FHR is the right metric. We share the FHR target against household peak draw. | Just match the old tank size; that's enough. |
| Should the HPWH go in the garage, basement, or conditioned space? | HPWH performance and cooling-side output both depend on location. Oakland garages and basements (typical for older Craftsman and bungalow homes) work well because the cool dry air the HPWH exhausts is unused. Conditioned-space install moves the cool exhaust into your living area, which is fine in summer but adds heating load in winter. We recommend garage or basement when available; we duct the exhaust to outside or to a vented utility room only if there is no garage/basement option. We share the location rationale. | Anywhere is fine; HPWH location doesn't matter. |
| What refrigerant does the HPWH use and does it matter? | Most US HPWH (Rheem ProTerra, A.O. Smith Voltex AL, Bradford White AeroTherm, Stiebel Eltron Accelera 300) use R-134a or R-513A. Sanden HPWH uses CO2 (R-744), which has a much lower GWP (1 vs 1430 for R-134a) and higher heating capacity at low ambient temps. For most Oakland installs the standard R-134a or R-513A is fine; for the Hills where ambient garage temps run cooler in winter, Sanden CO2 holds capacity better but at higher purchase cost. We share the refrigerant and tradeoffs. | Refrigerant doesn't matter; all HPWH are the same. |
| Rheem ProTerra vs A.O. Smith Voltex AL vs Bradford White AeroTherm vs Sanden: how do you decide? | Rheem ProTerra (50/65/80 gal, UEF 3.7-4.0) has the broadest install base and the cheapest upfront. A.O. Smith Voltex AL (50/66/80 gal, UEF 3.45) has the longest service history. Bradford White AeroTherm (50/65/80 gal, UEF 3.39) sells primarily through plumbers (not retail). Stiebel Eltron Accelera 300 (80 gal, UEF 3.05) is European-built with a long history. Sanden CO2 (80 gal, UEF 4.4+) is the most efficient and uses CO2 refrigerant; costs roughly 2x of Rheem. We match the unit to your peak-draw profile and budget; we do not push one brand by default. | Always Rheem; the others are not worth it. |
| What's the difference between recovery rate and first-hour rating and which matters more? | Recovery rate is gallons per hour the HPWH can heat from cold to setpoint at steady state; FHR includes the stored tank plus recovery in the first hour. For HPWH the recovery rate is roughly half a gas tank's recovery, so a 50 gal HPWH with 25 GPH recovery feels like a smaller tank in heavy back-to-back use. FHR captures the realistic delivery; we use FHR in sizing. For households with simultaneous showers a 65 or 80 gal tank usually delivers the FHR you want. | Recovery is all that matters; tank size is irrelevant. |
| What happens to the gas line when we remove the old water heater? | Per California Plumbing Code, the gas line must be capped at the shutoff valve or further upstream, labeled with the date and 'capped per CPC', and pressure-tested if it remains connected to the meter. If we are removing all gas appliances we can request PG&E gas-meter removal entirely (eliminating the monthly meter charge); the request goes through PG&E and takes 4-8 weeks. We document the gas-line scope on the permit drawings and include the cap-and-label step explicitly. | Just cut the line and walk away. |
| What warranty terms apply to the HPWH tank and parts? | Tank warranties on Rheem ProTerra and A.O. Smith Voltex AL run 10 years standard; the heat-pump components run 10 years parts and 1 year labor. Bradford White AeroTherm is similar. Sanden CO2 carries 10 year tank and 6 year heat pump. Installer labor warranty (separate) runs 1-5 years and matters most for any leak-related repair. We list each warranty in the proposal and register on your behalf within the manufacturer's required window. | Warranty is automatic; you don't need to ask. |
| What does commissioning look like and how do I use vacation mode or heat-pump-only mode? | At commissioning we verify the unit is plumbed correctly (inlet, outlet, T&P relief, condensate drain), the 240V or 120V circuit is sized correctly, the unit reaches setpoint and cycles cleanly, and we walk you through the control panel modes: Heat Pump Only (most efficient, slower recovery), Hybrid (HP plus electric resistance backup), Electric Only (resistance only, mostly disabled), and Vacation (low setpoint or off for trips). We leave you a signed commissioning sheet with the mode recommendation. | Just press a button and you're done. |
| Where does the condensate drain go in an Oakland install? | HPWH condensate typically routes by gravity to an existing floor drain, laundry standpipe, or condensate pump to a remote drain. In older Oakland basements without a floor drain we install a condensate pump (Little Giant or similar, around $75-$150) plus tubing to the nearest drain. The drain detail goes in the permit drawings. We do not leave a HPWH with no condensate path. | Condensate isn't much; it just evaporates. |
| Is HPWH compressor noise a problem in an Oakland Craftsman? | HPWH compressors run around 45-50 dBA at one meter, similar to a quiet refrigerator. In a garage or basement the noise is rarely a problem. If the HPWH must live in a conditioned space adjacent to a bedroom in an older Craftsman with single-wall partitions, the noise can be noticeable; we recommend a buffer wall, a vented utility room, or selecting a quieter model (Sanden CO2 is among the quietest). We share the dBA rating in the proposal. | HPWH is silent; the spec lies. |
Questions for solar + battery installers
| Question | Good response | Bad response |
|---|---|---|
| How will you size the solar array for our future electric load (heat pump HVAC, EV, water heater)? | We model expected future usage including planned heat pump, EV miles, and water heater, then size the array to offset that load under NEM 3.0 export economics. | We size the system from last year's utility bill only. |
| How does NEM 3.0 change the economics versus older interconnections? | NEM 3.0 cut export compensation by ~75 percent versus NEM 2.0, which makes battery storage important for self-consumption. We model expected savings under NEM 3.0 specifically. | NEM 3.0 is the same as NEM 2.0 economically. |
| Is my roof suitable for solar, and what is its remaining lifetime? | We inspect the roof condition, slope, orientation, and shade pattern; we recommend roof replacement first if the roof is near end of life. | Any roof works. |
| Which panel and inverter brands do you recommend, and why? | We name the specific panel model (wattage, efficiency, temperature coefficient, degradation curve) and inverter brand (string vs microinverter), explain the tradeoffs for our roof, and provide the manufacturer datasheets. | We use whatever is cheapest in stock this month. |
| Will the array use string inverters, microinverters, or DC optimizers, and why? | We choose based on roof shading patterns and orientation: microinverters or optimizers for shaded or multi-orientation roofs, string inverters for unshaded uniform arrays. We explain the cost and monitoring tradeoff. | Microinverters are always best. |
| What does the shade analysis show for our roof across the year? | We run a shade analysis tool (HelioScope, Aurora, or similar) using a site survey and roof imagery, and we share the annual production estimate per panel with shade losses called out. | Shade is not significant. |
| Do you offer a production guarantee, and how is it enforced? | We offer an annual production guarantee in kWh based on the design model, and we explain the remediation path (true-up payment or system correction) if actual production falls below the threshold. | Production guarantees are a marketing gimmick. |
| What monitoring platform comes with the system, and are there subscription fees? | We name the monitoring platform (Enphase Enlighten, SolarEdge mySolarEdge, or similar), describe what data is visible per panel or per string, and disclose any optional or recurring fees. | Monitoring is included; do not worry about the details. |
| If we add a battery later, can we still apply for SGIP at that time? | Yes — SGIP applications are tied to the battery install, not the solar install. As of 2026, only the AB 209-funded RSSE (Residential Solar and Storage Equity) tier remains open to new applications, and that budget is fully reserved with new apps on a waitlist served via attrition; ratepayer-funded General Market / Equity / Equity Resiliency budgets are no longer accepting new applications. We verify current SGIP budget status at selfgenca.com when the battery is added and explain that pre-approval is required before equipment is delivered. | SGIP only counts if solar and battery are installed together. |
| Who handles the PG&E interconnection paperwork, and what is the typical timeline? | We submit the PG&E interconnection application on your behalf, file the city permits, and coordinate Permission to Operate (PTO). Typical PG&E PTO timelines range from 2 to 6 weeks after the city sign-off; we document the expected window in the quote. | Interconnection happens automatically. |
| What is your post-install commissioning checklist? | Commissioning includes verifying each panel reports correctly in the monitoring platform, checking inverter firmware, confirming production matches the design model on a clear day, and walking us through reading the monitoring app. | We turn it on and leave. |
| How will you confirm the roof structure supports the array? | We perform a structural assessment including rafter sizing, spacing, and condition; for older or unusual roofs we may engage a licensed structural engineer to provide a letter for the permit submittal. | Roofs always handle solar. |
| How will the array meet California fire-setback rules? | We design the array to meet the California Residential Code fire access pathway requirements: ridge setbacks, hip-to-eave pathways, and emergency egress clearances, and we document compliance in the permit submittal. | Fire setbacks are optional. |
| What ongoing maintenance does the system need? | Typical maintenance is light: annual visual inspection, occasional rinse if local dust or pollen reduces production, and inverter firmware updates pushed by the manufacturer. We explain the warranty implications of skipping recommended maintenance. | Solar is install-and-forget; no maintenance ever. |
| What warranties cover the panels, inverter, and labor? | Panels typically carry a 25 year product warranty plus a 25 year linear production warranty; inverters carry 10 to 12 years standard (extendable); we provide a 5 to 10 year labor warranty separately. We document what voids each. | Lifetime warranty on everything. |
| How do you model production for an Oakland address given the difference between the Hills and the flatlands? | We use PVsyst or HelioScope with NREL TMY3 data for the nearest Oakland station, then apply a neighborhood-microclimate derate. Oakland Hills (Montclair, Skyline) typically gets less morning marine layer than flatland Oakland (Lake Merritt, West Oakland) and runs 3-7 percent higher annual production for an equivalent roof. We share the 12-month production model with monthly breakdown. We do not promise specific kWh production; we share the model assumptions. | Oakland production is the same everywhere; just use the average. |
| How does NEM 3.0 (Net Billing Tariff) affect the export economics for an Oakland rooftop on PG&E? | NEM 3.0 took effect April 15, 2023 for new PG&E interconnections. Export compensation runs roughly 75 percent lower than NEM 2.0 and varies hourly by the CPUC Avoided Cost Calculator (ACC) rate schedule. A solar-only system with limited self-consumption usually performs poorly on payback under NEM 3.0. We model the year-1 cost with and without battery so the self-consumption difference is visible. We share the ACC hourly schedule we used. | NEM 3.0 is fine; you'll still net to zero on your bill. |
| What monitoring platform comes with the install and what data do I actually see? | Enphase systems use the Enlighten platform with per-microinverter data; SolarEdge uses the SolarEdge monitoring platform with per-optimizer data; Tesla solar uses the Tesla app. All show daily / monthly / annual production and faults. We commission monitoring at install and walk you through the dashboard. We do not consider commissioning complete until you can see live data on your phone. | Monitoring is included; you'll figure it out. |
| Microinverter (Enphase IQ8) or string inverter (SolarEdge)? Which fits an Oakland roof better? | Oakland roofs with shading from neighbor trees, redwoods, or chimney shadows benefit from microinverters (Enphase IQ8) because each panel operates independently of shaded neighbors. Clean unshaded roofs can use either; string inverters (SolarEdge) have a longer service history and slightly lower install cost. We run the shading analysis (HelioScope, Aurora) and pick the right topology. We do not push one technology by default. | Always go microinverter; it's the only good choice. |
| Our Craftsman has a 25-year-old composition roof. Should we re-roof before solar? | Composition roofs over 20-25 years typically have 5-10 years of remaining life. Removing and reinstalling a solar array adds roughly $2,000-$5,000 in labor on top of the re-roof. The cost-rational path is usually to re-roof first if the roof is past 20 years, especially in Oakland where rain and salt-air exposure shorten composition shingle life. We assess at the site visit and share the math; we do not push solar onto a roof that needs replacement. | Solar adds 25 years to your roof life; install now. |
| Older Craftsman rafters look thin to me. Do we need a structural engineer? | Many older East Bay Craftsman and bungalow homes have 2x4 or 2x6 rafters at 24-inch spacing, which is at the low end of the structural envelope for additional dead and wind load from a PV array. Oakland P&B often requires a stamped structural letter or engineered tie-down design for older homes. We engage a licensed structural engineer when the rafter geometry calls for it; the cost runs $400-$900 and the letter is part of the permit submittal. We do not skip structural review on older homes. | Skip structural; the panels are light. |
| Are there fire-access setbacks on a residential solar array in Oakland? | California Residential Code Chapter R331 (formerly R327 in older code references) requires roof-access pathways for firefighters: typically 3 feet of clear space at the ridge and along setbacks from roof edges. For Oakland Hills addresses in the Very High Fire Hazard Severity Zone, CRC R337 also applies with additional class-A roof requirements. We document the setbacks on the permit drawings and confirm Oakland P&B sign-off. We do not size the array up to the eaves. | Setbacks don't matter; cover the whole roof. |
| What warranties cover the panels, the inverter, and the labor in Oakland? | Tier-1 panel warranties (LG Energy Solution, REC, Q CELLS, Panasonic) run 25 years on product and power output (typically 84-92 percent retained capacity at year 25). Microinverter warranties (Enphase IQ8) run 25 years; string inverter (SolarEdge) runs 12 years extendable. Labor warranties from the installer run 5-10 years and are the most important one to scrutinize because it covers roof penetrations. We list each warranty term in the proposal. | Warranty is automatic; you don't need to ask. |
| Oakland has a lot of mature trees and redwoods. How do you handle shading in the production model? | We use HelioScope or Aurora 3D shading models with imported LiDAR (sometimes drone imagery) for the roof and surrounding tree canopy. Mature redwoods in Oakland neighborhoods (Rockridge, Temescal, Piedmont border) can shade significant roof area. The model produces a per-month shading impact; we share it. We do not exclude shaded areas from the proposal without showing the math. | Trees aren't a big deal; we just lay out around them. |
| Does coastal salt air or pollen and dust derate Oakland panel output? | Soiling derate on Oakland panels typically runs 1-3 percent annually under normal rainfall. Bay-adjacent addresses (West Oakland, Jack London) get a small salt-air component. Inland Oakland mainly accumulates pollen and dust between rain events. We apply a 2 percent soiling assumption in PVsyst unless your site warrants more. We do not recommend annual professional cleaning unless the array sits on a particularly soiled location. | Clean panels every six months or output crashes. |
| What is the PG&E interconnection process and what fees apply? | We submit the PG&E interconnection application (the Net Billing Tariff agreement under NEM 3.0) once the permit is in plan check. PG&E typically takes 2-4 weeks to issue conditional approval, then PTO follows the final inspection by 2-6 weeks. PG&E charges a $145 interconnection application fee on residential NEM 3.0 systems as of last verification; we itemize it. We do not energize before PTO. | PTO is automatic and instant; just flip the switch. |
| We plan to add a heat pump and HPWH later. Should the solar size now account for that future load? | Yes. Sizing solar today to meet only current usage strands future load on the grid at NEM 3.0 export rates. We model expected future load (Manual J for HP HVAC, HPWH first-hour rating, EV-charge needs) and size solar to cover the full expected post-electrification annual kWh, within roof and structural limits. We share the sizing rationale and the post-electrification cost model. | Just size to current usage; we'll add more later. |
| What does NEC 690 and the 705.12 120 percent rule mean for an Oakland panel? | NEC Article 690 covers PV systems and Article 705 covers interconnection. The 705.12(B)(3)(2) 120 percent rule says the sum of main breaker + inverter output breaker cannot exceed 120 percent of busbar rating. A 200A panel allows up to 240A of combined; a 200A main + 40A solar breaker fits (200 + 40 = 240). Larger inverters require derating the main breaker, a line-side tap, or a panel upgrade. We confirm the busbar rating and document the math in the permit drawings. | The 120 percent rule doesn't apply to most homes. |
| Our Oakland Hills address is in the Very High FHSZ. Does the solar install change because of fire rules? | Oakland Hills addresses in the CAL FIRE Very High Fire Hazard Severity Zone fall under CRC R337 for wildfire-resistant construction. The PV array itself does not change, but adjacent roofing materials must be Class A fire-rated, conduit penetrations must use fire-rated boots and sealant, and combiner boxes near eaves need ignition-resistant placement. We document the FHSZ designation, the Class A roof confirmation, and any required R337 hardware in the permit drawings. | Fire rules don't change solar installs. |
| We still have some knob-and-tube wiring. Will that block the solar interconnection? | Knob-and-tube wiring on lighting branches does not by itself block a solar interconnection; the solar feeder runs into the main panel busbar, not into knob-and-tube branches. However, if the panel needs upgrade or replacement to accept the inverter output breaker, the rewiring requirement may surface. We assess at the site visit and itemize any required electrical scope alongside the solar work so you do not see a surprise change order after permitting. | Knob-and-tube blocks all solar; you have to rewire first. |
| We are an Ava Community Energy customer. Does the solar interconnection go through Ava or PG&E? | Interconnection goes through PG&E because PG&E owns the meter and the distribution lines. The Net Billing Tariff (NEM 3.0) export compensation flows back through PG&E's billing as a generation credit; if you are on an Ava supply product (Bright Choice default or Renewable 100 opt-up), the export credit applies against the PG&E delivery portion of the bill and the Ava-supplied generation portion separately. Ava Community Energy (the CCA formerly known as East Bay Community Energy, rebranded October 2023) publishes its own NBT-equivalent compensation schedule; we model the actual Ava numbers, not the PG&E bundled-rate numbers, for the payback calc. | Ava customers get a separate solar deal. |
| Which circuits will be backed up during an outage, and for how long? | We provide a backup-loads list (refrigerator, internet, lights, HVAC controls, well pump if any), estimate runtime in hours at typical and worst-case usage, and explain whether whole-home or essential-loads backup is recommended. | The battery powers the house. |
| Does my install qualify for SGIP (Self-Generation Incentive Program), and at what tier? | We verify current SGIP budget status before quoting: as of December 31, 2025 the ratepayer-funded General Market, Equity, and Equity Resiliency budgets are closed to new applications, and only the AB 209-funded RSSE (Residential Solar and Storage Equity) tier remains open — and that budget is fully reserved with new applications served via an attrition-based waitlist (selfgenca.com). We document the waitlist position rather than promising a rebate, and we explain that pre-approval is required before equipment is delivered. | SGIP always pays out the maximum amount. |
| What is the battery's usable kWh and continuous inverter power, and how do they relate? | We specify both: kWh determines how long the backup lasts; the inverter's continuous AC output determines what can run at once (refrigerator + lights + maybe HVAC vs everything). | kWh is the only number that matters. |
| Is the battery AC-coupled or DC-coupled with the solar array, and why? | AC-coupled batteries use a separate inverter and are easier to retrofit to existing solar. DC-coupled batteries share an inverter with new solar and are typically more efficient end-to-end. We choose based on whether the solar array is new or existing. | Coupling does not matter. |
| Can we add more battery capacity later, and what are the limits? | Most modern systems support stacking additional units up to a vendor-specified maximum. We document the maximum stack today, what is needed to add capacity later (matching firmware, software update, possible electrical re-work), and whether SGIP can be applied to expansion units. | Buy the biggest battery today; expansion is impossible. |
| What depth-of-discharge limit does the battery use, and how does that affect usable kWh? | We explain the nameplate kWh vs usable kWh: modern LFP batteries reserve very little for cycle life (often 95 to 100 percent of nameplate is usable); older chemistries reserve 10 to 20 percent. We quote usable kWh in the proposal so you can compare like-for-like. | Nameplate kWh is the usable kWh. |
| What is the manufacturer warranty on the battery, and what limits it? | Most residential batteries carry a 10 to 12 year warranty, often paired with a cycle count (e.g. 6,000 to 10,000 cycles) or throughput limit (e.g. 37.8 MWh) - whichever comes first. We provide the spec sheet and explain what voids coverage. | Lifetime warranty; no fine print. |
| Are time-of-use arbitrage cycles counted against the warranty? | Yes. Every charge-discharge cycle counts toward the throughput limit; aggressive daily TOU arbitrage may shorten the years-based warranty window. We model expected cycles per year for your usage pattern. | Cycling does not count against the warranty. |
| How will the battery shift load away from PG&E peak hours? | We program the battery to charge from solar during midday and discharge during the PG&E EV2-A or E-ELEC peak window (typically 4-9pm), saving you the peak-period delta. We tune the schedule for your actual usage and rate plan. | The battery charges and discharges whenever. |
| How does NEM 3.0 change the battery payback? | Under NEM 3.0, export compensation dropped by roughly 75 percent, so self-consumption (using your solar via the battery instead of exporting) is now the primary battery economic driver. We model expected savings under NEM 3.0 with your specific rate plan. | NEM 3.0 has no effect on battery payback. |
| How will the install meet CRC 1207 / R327 fire-setback rules for energy storage? | We design the install per California Residential Code R327 (formerly section 1207): separation from windows, doors, openings into the dwelling, and other batteries; smoke and heat detectors per code; and an exterior wall location where possible. We document compliance in the permit submittal. | Fire setbacks are optional. |
| What is your post-install commissioning checklist? | Commissioning includes verifying battery state-of-charge reporting, testing backup-mode transfer with a simulated outage, walking through the app for backup-only vs TOU modes, and confirming the SGIP system performance metering is functioning if SGIP is part of the project. | We turn it on and leave. |
| Are you an installer certified by the battery manufacturer? | Yes. We provide our certification number for the specific battery brand (Tesla Powerwall, Enphase IQ, LG Chem RESU, FranklinWH, etc.); certification is typically required to preserve full warranty coverage. | Certification does not matter for batteries. |
| Who handles the PG&E interconnection update for the new battery? | We submit the updated PG&E interconnection paperwork to add the battery to your existing or new solar interconnection, and we obtain the updated Permission to Operate before energizing. | PG&E interconnection happens automatically. |
| What panel-side breaker work or interconnection method does the battery require? | We confirm whether the battery interconnects via a back-fed breaker (with sum-of-breakers check per NEC 705.12), a supply-side tap, or a dedicated battery sub-panel; we show the calculation on the permit drawings. | Any spare slot will work. |
| How does SGIP apply for a residential battery in Oakland (PG&E territory) and which tiers are available? | SGIP in PG&E territory is administered by PG&E. Budget status as of 2026: per the SGIP program administrators, the ratepayer-funded Residential General (around $150 per kWh of usable capacity), Equity (around $850 per kWh for income-qualified customers), and Equity Resiliency (around $1,000 per kWh for HFTD-designated or Medical Baseline customers) budgets are no longer accepting new applications. Only the AB 209-funded RSSE (Residential Solar and Storage Equity) tier remains open — and that budget is fully reserved as of December 31, 2025; new RSSE applications go to a waitlist served through attrition of cancelled projects. RSSE rates were around $1,100 per kWh storage plus around $3,100 per kW solar, targeted at income-qualified solar-plus-battery customers. Pre-approval is required before installation; we verify current budget status at selfgenca.com before quoting, reserve via PG&E when the path is open, and document the reservation number (or waitlist position) in the proposal. We confirm only what we have reserved; we do not assume eligibility. | Sign and we will get whatever SGIP shows up. |
| We are in the Oakland Hills marked as Very High Fire Hazard Severity Zone. Does the SGIP Equity Resiliency tier apply? | SGIP Equity Resiliency was designed for customers in high-fire-threat districts (per CPUC HFTD map) and on the Medical Baseline program. Many Oakland Hills addresses (Montclair, Skyline, Joaquin Miller, Piedmont border) fall in HFTD Tier 2 or Tier 3. As of 2026 the ratepayer-funded Equity Resiliency budget is no longer accepting new applications — only the AB 209-funded RSSE (Residential Solar and Storage Equity) tier remains open, and that budget is fully reserved with new applications on a waitlist via attrition. We verify the HFTD designation against the CPUC fire-threat map and walk through eligibility honestly before listing any SGIP line item, but practical access in 2026 is limited to the RSSE waitlist for income-qualified solar-plus-battery projects. Approval is not automatic; we list any SGIP path as pending until confirmed via selfgenca.com. | Equity Resiliency is automatic in Oakland Hills; you qualify. |
| How does adding a battery improve solar payback under NEM 3.0 on PG&E? | Under NEM 3.0, exporting solar to the grid pays roughly 75 percent less than under NEM 2.0. A battery stores midday solar for use during the 4-9pm peak window, which is the highest-rate window on PG&E E-ELEC and EV2-A. We model self-consumption ratio (typically 60-80 percent with battery vs 30-50 percent solar-only) and share the year-1 cost comparison. We do not promise a payback number; we share the model assumptions and outputs. | Adding a battery always cuts your bill in half. |
| Should the battery be AC-coupled or DC-coupled and what is the difference? | DC coupling routes solar DC directly into the battery before inverting, reducing one conversion step (roughly 2-3 percent round-trip efficiency gain). AC coupling inverts at the panel, then re-inverts back to DC for battery storage. DC coupling is cleaner for new solar plus battery installs; AC coupling is the right choice when retrofitting a battery onto an existing solar system. Tesla Powerwall 3 supports both. Enphase IQ Battery is AC-coupled by design. FranklinWH is AC-coupled. We pick the topology based on whether solar is new or existing. | DC coupling is always better; AC is obsolete. |
| How do you size the battery for typical Oakland Hills PSPS events and what backup-loads should make the list? | Oakland Hills PSPS events typically run 8-24 hours, occasionally longer in extreme weather. We build a backup-loads list with you: refrigerator (1-2 kWh per day), essential lighting (LED, 1-2 kWh per day), Wi-Fi router and modem (0.5 kWh per day), cell phone charging, any medical equipment (CPAP, oxygen concentrator), and gas-furnace blower if applicable. A 13.5 kWh Powerwall covers about a day of these critical loads. We size for the design outage duration and do not assume the whole house is backed up. Cooling and EV charging are usually off the list. | Just back up the whole house; the battery will figure it out. |
| What does the depth-of-discharge (DoD) spec mean and how does LFP chemistry change it? | DoD is the percentage of nameplate capacity usable per cycle without warranty impact. LFP (lithium iron phosphate) batteries (Tesla Powerwall 3, Enphase IQ Battery 5P, FranklinWH aPower) are rated for around 95-100 percent DoD because LFP is thermally stable and tolerates near-full discharge. Older NMC chemistries (some early SimpliPhi units) rated lower. Higher DoD means more usable kWh per nameplate kWh. Tesla Powerwall 3 nameplate is 13.5 kWh with around 13 kWh usable. | DoD doesn't matter; just look at the nameplate. |
| What warranties cover the battery hardware and what should I scrutinize? | Tesla Powerwall 3 warranty is 10 years unlimited cycles. Enphase IQ Battery 5P is 10 years or 6,000 cycles or 28 MWh throughput, whichever first. FranklinWH aPower is 12 years 70 percent end-of-warranty capacity. Installer labor warranty (separate) runs 5-10 years. The throughput and capacity-retention numbers matter more than the year count. We list each warranty term in the proposal. | All warranties are the same; just pick a brand. |
| How long will the battery actually run during a PSPS event? | Runtime is usable kWh divided by hourly load. A 13 kWh usable Powerwall covering 0.5 kW continuous (fridge cycling, LEDs, Wi-Fi, router) runs roughly 26 hours; covering 1.0 kW (above plus medical equipment) runs roughly 13 hours; covering 2.5 kW (whole house including cycling HVAC) runs roughly 5 hours. We give you a per-load-profile runtime table, not a single number. We do not promise a runtime; we show the math. | It will last all night; don't worry about loads. |
| What certifications should the battery have for Oakland install? | UL 9540 is the system-level safety certification for energy storage; UL 9540A is the thermal-runaway propagation test. All major brands (Tesla, Enphase, FranklinWH, LG Energy Solution) carry UL 9540 and UL 9540A. The data sheet should show both. Oakland P&B confirms the listing in plan review. We do not install a battery without UL 9540 and 9540A. | UL listings don't matter; the manufacturer covers it. |
| Tesla Powerwall 3 vs Enphase IQ Battery 5P vs FranklinWH for an Oakland install: how do you decide? | Tesla Powerwall 3 has an integrated 11.5 kW continuous inverter, supports DC-coupled new solar plus AC-coupled retrofit, and pairs with Tesla cars cleanly. Enphase IQ Battery 5P is modular (5 kWh per unit), AC-coupled, and pairs well with existing Enphase microinverter systems. FranklinWH aPower stacks two 13.6 kWh modules with a unified gateway and has the best whole-home backup capacity for the price. We match the brand to your solar topology, your backup-loads target, and whether you want modularity or maximum capacity. We do not push one brand by default. | Tesla is always best; the others are junk. |
| What monitoring app comes with the battery and what does it actually show? | Tesla uses the Tesla app (solar + battery + EV in one view, real-time and historical data). Enphase uses Enlighten (per-microinverter solar and battery state-of-charge). FranklinWH uses the FranklinWH app (whole-home view with backup-loads circuit-level data). All show state of charge, daily and monthly throughput, faults, and grid-tied vs backup status. We commission monitoring at install and walk you through it. We do not consider commissioning complete until you can see live data on your phone. | Just download the app; you'll figure it out. |
| Can the battery do rate arbitrage on PG&E TOU even without solar? | On PG&E E-ELEC and EV2-A, charging the battery from the grid during super-off-peak (midnight-3pm) and discharging during 4-9pm peak captures a per-kWh delta of roughly 20-30 cents. Without solar, the year-1 arbitrage savings on a 13 kWh battery typically range $400-$900 depending on the rate plan and consumption pattern. This rarely pays back the hardware on its own; arbitrage is a secondary benefit on top of backup resilience. We model both scenarios. | Arbitrage will pay back the battery in 3 years. |
| Our Oakland Hills address is in the Very High FHSZ. Does the battery need to be outdoor or indoor? | CRC R337 (wildfire-resistant construction) applies to Oakland Hills addresses in the Very High FHSZ. Battery enclosures must comply with the listed installation manual for FHSZ; indoor installs in a garage or detached structure are generally allowed if the structure meets R337 envelope requirements. Outdoor installs require ignition-resistant placement and CRC R331 setbacks from the structure. We document the FHSZ designation, the proposed location, and the install-manual citation in the permit drawings. We do not install a battery in zone-0 (within 5 feet of combustible vegetation). | FHSZ doesn't change battery installs. |
| What does commissioning look like at the end of the battery install? | We do a backup-test: simulate a grid outage by opening the main breaker and confirm the battery picks up critical loads within the inverter's transfer time (Tesla Powerwall 3 around 200 ms, Enphase IQ Battery 5P around 500 ms). We verify state-of-charge readings against measured voltage, confirm the gateway communicates with the manufacturer cloud and your phone, and walk through the app together. We give you a signed commissioning sheet with the measured transfer time. Without commissioning, the battery may not transfer cleanly during a real outage. | Just push the button at the end; you don't need a test. |
Questions for electricians
| Question | Good response | Bad response |
|---|---|---|
| What is my panel size and service size, and is it adequate for adding a heat pump? | We inspect the panel labels and main breaker on site, explain whether 100A, 125A, 150A, or 200A is adequate, and verify the service drop matches the panel. | We guess from a photo only; no on-site inspection. |
| Can we avoid a service upgrade by using smart load management? | Possibly. We will perform a formal Article 220 load calculation, propose smart load management for HVAC + EV + water heater coordination, and explain the tradeoff vs upgrading. | You always need 200A; no calculation needed. |
| Will the heat pump need a new dedicated circuit, and what breaker size? | Yes, the outdoor unit and air handler each typically need dedicated circuits at the breaker sizes the manufacturer specifies (often 30-50A for outdoor, 15-30A for indoor). | Any spare breaker will work. |
| We've heard knob-and-tube wiring is common in older East Bay homes. Will that block the heat-pump install? | Knob-and-tube wiring is widespread in Craftsman, bungalow, and older West Oakland and Oakland Hills homes. Oakland Planning and Building generally treats active knob-and-tube as an existing condition that does not by itself block a new dedicated circuit for a heat pump; however, if the new circuit ties into a knob-and-tube branch or the panel needs upgrade, rewiring is often required. Some homeowner insurance carriers also require rewiring. We assess at the site visit, list any required rewiring scope as a line item, and do not bury it in labor. | Knob-and-tube is fine; we just splice the new circuit in. |
| Does the install require a dedicated electrical circuit, and what size? | Standard heat pump water heaters typically need a dedicated 30A 240V circuit; some 120V hybrid models can operate on a 15A or 20A circuit at reduced capacity. We size the circuit per the manufacturer's data plate and document conductor gauge and breaker rating in the quote. | Share the circuit with the dishwasher. |
| Do we need a new 240V circuit or can the plug-in 120V hybrid work? | Standard HPWH (Rheem ProTerra, A.O. Smith Voltex AL, Bradford White AeroTherm) need a 240V/30A circuit. The plug-in 120V Rheem ProTerra Plug-In Series runs on a standard 15A receptacle (with heat-pump-only mode, no resistance backup); recovery is slower. If running a new 240V circuit to the garage is expensive, the 120V plug-in is a viable path with longer recovery. We model both for your peak-draw profile and share the cost difference, including any panel work needed for the 240V option. | Always do 240V; 120V plug-in is junk. |
| We have some knob-and-tube wiring in this Craftsman. Does that block the HPWH electrical install? | Knob-and-tube wiring on existing lighting branches does not by itself block a new 240V HPWH circuit. The new circuit runs as its own home-run from the panel directly to the HPWH location, not through any knob-and-tube branch. However, if the panel needs upgrade or replacement to accept the new 240V breaker, the rewiring requirement may surface. We assess at the site visit and itemize any required electrical scope. | Knob-and-tube blocks HPWH; you have to rewire first. |
| What charger amperage do you recommend, and why? | We size the charger based on your vehicle, expected daily mileage, panel capacity, and future second-EV plans (typically 32-48A continuous draw on a 40-60A circuit). | Always install the biggest charger; bigger is better. |
| Will the charger need a dedicated 240V circuit? | Yes. We run a dedicated 240V circuit sized at 125 percent of the charger's continuous draw, with the correct conductor gauge and conduit per code. | Share a circuit with the dryer. |
| How will you confirm my panel has capacity for the charger? | We perform an Article 220 load calculation on site, consider existing loads and planned heat pump or HVAC additions, and explain whether smart load management can avoid a service upgrade. | Your panel is fine; no calculation needed. |
| Can smart load management let me add a charger without upgrading the panel? | Often yes. Devices like Span panels or charger-side load-share modules may avoid a service upgrade by throttling the charger when other loads (HVAC, water heater) are active. | Load management is unreliable; always upgrade the panel. |
| How would you support a second EV without re-wiring everything later? | We may install a load-sharing charger today, or pre-pull conductors for a second circuit. We document the planned future load in the Article 220 calc. | One charger is plenty for any household. |
| How will you handle grounding and bonding for the new circuit? | We verify the service ground meets code, bond the charger neutral and equipment per Article 250, and confirm the GFCI protection (built in or required separately). | Grounding is standard; nothing to discuss. |
| Where will the conduit run, and what does it cost to extend? | We walk the routing on site (interior wall vs exterior, attic vs trench), specify conduit fill code requirements, and itemize incremental cost per linear foot. | Conduit routing is included; don't worry about it. |
| What labor warranty do you provide on the install, separate from the manufacturer warranty? | We provide a 1-2 year labor warranty on installation; the manufacturer warranty (typically 3-5 years on the charger) is separate. | Lifetime warranty on everything. |
| How does NEC 625 continuous-load sizing work for the EV-charger circuit? | NEC Article 625 governs EVSE installations. The continuous-load rule (NEC 625.41) sizes the branch circuit at 125 percent of the EVSE rated current. A 40A EVSE needs a 50A circuit and #6 copper conductor on most layouts; a 48A EVSE needs a 60A circuit and #4 copper. We confirm wire gauge, breaker size, conduit fill, and ground-fault protection (GFCI vs charger-internal CCID) on the permit drawings. We do not undersize the conductor to save cost. | A 40A charger goes on a 40A breaker; that's fine. |
| Can my existing 100A or 125A panel actually handle a Level 2 charger after the load calc? | We run NEC Article 220 standard or optional method load calc with all existing loads (lighting, HVAC, water heater, range, dryer) plus the new EVSE at its continuous-load rating. Many older East Bay homes with 100A panels run 60-85 amps of calculated demand; adding a 40A EVSE at 125 percent (50A continuous) requires either a service upgrade or a load-management device. We share the load-calc worksheet. We do not skip this step. | 100A panels can always handle a 40A EV charger. |
| If my panel is at capacity, is a load-management device cheaper than upgrading the panel? | Load-management devices (DCC-9, NeoCharge, Wallbox Power Boost, ChargePoint Home Flex with Power Management) can let an EVSE share an existing circuit by throttling EV charge current when other loads are active. Typical install cost runs $300-$900 plus labor. A panel upgrade in Oakland usually runs $4,500-$9,000 with permit and PG&E coordination. If the heat pump or HPWH is also planned, the panel upgrade is usually the right call now to avoid a second cycle. We model both with your plan and share the math. | Always upgrade the panel; load management is unreliable. |
| Which smart EVSE brands work well with off-peak scheduling and Ava / PG&E demand-response? | Wallbox Pulsar Plus, ChargePoint Home Flex, Tesla Universal Wall Connector, and Emporia EVSE all offer WiFi scheduling and integration with utility off-peak rates. Wallbox supports OCPP for utility programs; ChargePoint connects to ChargePoint network for demand-response participation; Tesla scheduling is via the car. We match the EVSE to your car and your rate plan rather than pushing one brand. We do not assume Tesla-only for non-Tesla households. | Just buy whatever; smart charging doesn't matter. |
| Should the EVSE be plug-in NEMA 14-50 or hardwired and what is the code difference? | NEMA 14-50 outlets require GFCI protection (NEC 625.44(A) requires personnel-protection level GFCI on receptacle installations); the EVSE plugs in and can be moved. Hardwired EVSE installations can use the manufacturer's internal CCID for ground-fault detection and skip the external GFCI breaker; the install is permanent. Hardwired typically runs $50-$150 cheaper on hardware. For garage installs we usually hardwire for reliability; for portable use a 14-50 outlet has flexibility. We list both options and the price difference. | Always do 14-50; it's the only way. |
| If the panel is far from the garage, will the voltage drop on the long run be a problem? | NEC recommends voltage drop under 3 percent on branch circuits. For a 50A EVSE circuit over 50-100 feet of run, the typical #6 copper conductor can drop into marginal territory; #4 copper or even #2 may be required on long runs from an old East Bay basement panel to a detached garage. We calculate voltage drop on the actual run length, document the conductor size in the proposal, and do not undersize to save copper cost. | Voltage drop doesn't matter; the EVSE compensates. |
| If we add solar and battery later, will the EVSE install need to change to comply with NEC 705.12? | NEC 705.12 (the 120 percent rule) governs how much inverter output a panel busbar can accept. A future solar plus battery install at 7.6 kW continuous (around 31A) plus a 200A main breaker leaves 209A of busbar capacity (200 x 1.2 = 240A allowed); the new EVSE plus future PV must fit within that budget. We document the future-load assumption now so the EVSE install does not have to be redone if solar comes later. We oversize the conduit run when reasonable to make future additions easier. | Worry about solar later; the EVSE doesn't care. |
| If the EVSE is outdoor-mounted, what GFCI and weatherproof requirements apply in Oakland? | Outdoor EVSE installations require weatherproof enclosure rating (NEMA 3R minimum, NEMA 4 preferred near coastal Oakland salt air), in-use cover for any receptacle, and GFCI protection per NEC 625.44. Oakland's wet winter season makes weatherproof gland fittings and conduit drips standard. We list the enclosure rating, GFCI device, and conduit-sealing detail in the permit drawings. | Outdoor is fine; just bolt it to the wall. |
| We have knob-and-tube wiring in parts of the house. Does the EVSE install force a rewire? | Knob-and-tube wiring is common in older Oakland Craftsman and bungalow homes. Oakland Planning and Building generally allows a new dedicated circuit for an EVSE without rewiring the rest of the house, provided the new circuit ties into the panel, not an existing knob-and-tube branch. However, if the main panel needs upgrade or replacement to accept the new circuit, the rewire may become required for the rest of the house. We assess at the site visit and itemize any required rewiring scope. | Knob-and-tube doesn't block EV chargers; never thought about it. |
| Do you need to be a manufacturer-certified installer for the warranty to be valid? | Tesla Wall Connector and ChargePoint Home Flex do not require certified-installer status for warranty validity. Wallbox warranties on commercial units sometimes require Wallbox-certified installer; the Pulsar Plus residential unit does not. We confirm the manufacturer's warranty conditions for the model in your proposal and register the warranty on your behalf within the required window. | Warranty is automatic; the manufacturer doesn't care. |
| If we add a battery later for PSPS resilience, will the EVSE need to coordinate with it? | Tesla Powerwall 3 and Enphase IQ Battery 5P both support EVSE coordination through their respective home-energy-management apps; the EVSE can throttle during outages to preserve battery runtime for critical loads. We confirm whether your planned EVSE supports OCPP or manufacturer integration with your future battery brand. If you are Tesla-bound (Powerwall plus Tesla car), the Tesla Wall Connector integrates cleanly; if you are mixed-brand we plan accordingly. We document the future-battery assumption now. | EVSE doesn't talk to batteries; they're independent. |
| Is WiFi or OCPP connectivity worth it for an EVSE in Oakland? | WiFi connectivity unlocks off-peak scheduling on the EV2-A or E-ELEC midnight-3pm super-off-peak window without manually plugging in at midnight. OCPP (Open Charge Point Protocol) lets the EVSE participate in utility demand-response programs if PG&E or Ava Community Energy offers them. The cost difference between non-WiFi and WiFi-capable EVSE is small (often $50-$150); for the off-peak scheduling alone the payback is usually within a year. We recommend WiFi-capable unless your garage has no signal. | WiFi is a gimmick; just plug it in at night. |
| Our flatland Oakland house has no driveway and only street parking. What options exist? | We assess three paths: curbside conduit run to a NEMA 14-50 outlet near the property line (subject to Oakland P&B plus PG&E plus an encroachment review), a relocatable EVSE on a detached garage if applicable, or Level 1 plus neighborhood DC fast-charging as a viable interim. We do not promise a particular curbside outcome before Oakland confirms what your property allows; some block configurations do not permit curbside conduit. We share what we find from the site visit honestly. | Just run a cord across the sidewalk; Oakland doesn't enforce. |
| Should we install a critical-loads sub-panel or back up the whole house? | Whole-house backup requires a battery large enough to cover all loads including HVAC and any large appliances; runtime drops fast. Critical-loads backup runs through a sub-panel that separates the backed-up circuits (lights, fridge, Wi-Fi, outlets in critical rooms) from non-essential loads. The critical-loads approach is usually cheaper and gives longer runtime per kWh of battery. We design the critical-loads sub-panel circuit list with you and document it in the permit. Tesla Powerwall 3 and FranklinWH can do whole-home or partial; Enphase IQ Battery typically uses a critical-loads sub-panel. | Whole-house backup is the only worthwhile approach. |
| How does NEC Article 706 and 705.12 affect the battery install? | NEC Article 706 covers Energy Storage Systems and 705.12 covers interconnection. We confirm the panel busbar rating, document the 120 percent rule math (main breaker plus inverter output breaker cannot exceed 120 percent of busbar rating), and specify any required line-side tap if the inverter output exceeds the allowed sum. We document grounding electrode per NEC 250 and any required revenue-grade metering. We do not skip the busbar math. | 705.12 doesn't matter for batteries. |
| How do you handle the grounding electrode for the battery system in an older Oakland house? | NEC Article 250 requires the ESS to be bonded to the existing grounding electrode system. Older Oakland Craftsman and bungalow homes sometimes have only a single ground rod, an undersized water-pipe bond, or both; the existing system may not meet current code for a new ESS. We measure the existing grounding electrode resistance, document compliance, and add supplemental electrodes (typically a second 8-foot copper-clad rod 6 feet from the first) if required. We include the grounding work as a line item in the proposal. | Just bond it to the panel; that's enough. |
| Will you perform an NEC Article 220 load calculation before sizing the new panel or service? | Yes. We total existing connected loads, apply Article 220 demand factors, then add expected future loads (heat pump HVAC, heat pump water heater, EV charger, induction range, battery) before recommending a service size. | We size from the existing panel rating. |
| Is this a service upgrade or a panel-only replacement, and how do you decide? | We explain the difference plainly: a service upgrade changes the service drop, meter, and main breaker rating (utility coordination required); a panel-only replacement swaps the breaker box at the existing service rating. We base the recommendation on the Article 220 result, not on a default upsell. | It is the same thing. |
| Who coordinates with the utility for the service upgrade, and what lead time should we expect? | We coordinate with the serving utility (your investor-owned utility such as PG&E, SCE, or SDG&E, or your municipal utility such as LADWP or SMUD) for the service drop, meter swap, and any utility-side work. We document the expected utility lead time in the quote because it often dominates the project schedule. | The utility handles itself. |
| How do you decide between 200A, 225A, or 320A service, and how much headroom should we plan for? | We size to the Article 220 calculated demand plus headroom for the ten-year horizon of electrification projects already on the table. For most California single-family homes adding heat pump HVAC, heat pump water heater, and one or two EVs, a properly sized 200A service is enough; 225A or 320A is only justified when the load calc shows it. | Bigger is always better, so we go 320A. |
| When does a smart panel (Span, Lumin, Eaton EV Choice) make sense versus a standard load center? | A smart panel can avoid a service upgrade when load shedding can keep peak demand under the existing service rating, or when granular per-circuit metering is desired. A standard load center is the right choice when the Article 220 result already fits the service rating, the homeowner does not want app-based controls, or budget is tight. | Smart panels are always the answer. |
| Is a sub-panel addition (for a detached garage, ADU, or workshop) a viable alternative to a full service upgrade? | A sub-panel can serve outbuilding loads without changing the main service rating when the Article 220 calc shows the existing service still has capacity. We size the sub-panel feeder per NEC and run it under permit. | Sub-panels always require a service upgrade. |
| Will you inspect and update the grounding electrode system as part of the panel work? | Yes. We verify the grounding electrode system (ground rods, water-pipe bond, concrete-encased electrode where present), measure resistance where required, and upgrade conductors and connections to the current code edition adopted by your jurisdiction. | Grounding is fine if the panel is bonded. |
| Which circuits in the new panel will require AFCI or GFCI protection, and what code edition are you applying? | We apply the California Electrical Code edition currently adopted by your local AHJ (the California Electrical Code is based on the NEC with California amendments). We itemize AFCI-required and GFCI-required circuits and price the AFCI/GFCI breakers separately so the homeowner sees the cost driver. | AFCI rules are confusing, so we skip them. |
| Will the quote include whole-home surge protection, and which type? | We recommend a Type 2 surge protective device (SPD) integrated with the new panel as a standard line item; Type 1 SPD at the service entrance is an upgrade option for homes with frequent utility-side transients. We explain warranty terms and replacement procedure after a major surge event. | Surge protection is unnecessary. |
| Does the existing panel location meet current code clearances, or do we need to relocate it? | We measure NEC Article 110 working-clearance requirements (depth in front of the panel, clear width, headroom) and confirm the panel is not behind cabinets, in clothes closets, or in other prohibited locations. If the location does not meet current code, we quote the relocation. | The existing spot is fine because the old panel fit. |
| Will you use conduit or NM cable for the new circuits, and how do you decide? | We follow the California Electrical Code wiring methods permitted for residential occupancies. Conduit is required for exterior runs and where physical damage is likely; NM cable is permitted in many concealed interior runs. We size conductors for the future load, not just today's circuit. | Whatever is easiest and cheapest. |
| Who pulls the electrical permit at the local AHJ (city or county permit center), and is the fee itemized in your quote? | We pull the electrical permit at the local AHJ in our own name, attend the inspection, and itemize the permit fee in the quote. We do not ask the homeowner to pull the permit. | We do not pull permits because they slow the job. |
| Walk us through the inspection process: which inspections are required and what does each one check? | We typically schedule a rough-in inspection (panel mounted, grounding electrode system verified, conductors run) and a final inspection (devices terminated, AFCI/GFCI verified under test, labeling complete). The exact sequence depends on the local AHJ. | There is just one inspection at the end. |
| How long will the home be without power during the panel swap, and what time of day will it occur? | A panel-only swap typically takes 6 to 10 hours; a service upgrade with meter swap can take a full day and is constrained by the utility's window. We confirm the exact window and time-of-day with the utility before scheduling. | Will not take long. |
| Will the new panel be sized and labeled for future solar or battery interconnection per NEC Article 705.12? | Yes. We size the busbar and main breaker so the future solar PV and battery interconnection meets NEC Article 705.12 (the 120% rule or supply-side connection, depending on the configuration). We document the headroom available so the future installer can verify quickly. | Solar and battery do not affect panel sizing. |
| If we may add a generator interlock or transfer switch later, what should the new panel design account for? | We can include a generator interlock kit with the panel install, or pre-wire space for a future automatic transfer switch. Interlock is the lowest-cost option for occasional backup; ATS is the right path for whole-home automatic backup. | Generator readiness is a future problem. |
| How are you treating the federal §25C tax credit for panel-upgrade work? | The federal §25C Energy Efficient Home Improvement Credit expired December 31, 2025 under OBBBA (PL 119-21). For panel work performed in 2026 and later, we do not list §25C as an applicable credit and we will not claim eligibility. | You qualify for the 30 percent federal tax credit on panel work. |
| Is panel-upgrade work eligible for HEEHRA (Home Electrification and Appliance Rebates) in California, and what is the current funding status? | Panel-upgrade work, sub-panel additions, and electrical wiring needed to support qualifying electrification projects can be eligible HEEHRA expenses for income-qualified households. CPUC reported HEEHRA funds fully reserved earlier this year, so we do not promise current availability and confirm against the CPUC HEEHRA portal at quote time. | HEEHRA covers all panel upgrades automatically. |
| Are there TECH Clean California, CCA (Community Choice Aggregator), or utility-side incentives that apply to this panel work? | TECH Clean California is statewide for qualifying heat-pump installations; panel-upgrade work tied to a qualifying heat pump may be eligible. Many CCAs (such as MCE, SVCE, CleanPowerSF, SJCE) and IOUs run their own electrification rebates with panel-work eligibility. We confirm the program rules in writing before the quote and list each program with its reservation status. | All rebates are guaranteed if you sign today. |
| What is the manufacturer warranty on the new panel, breakers, and any smart-panel hardware? | We list the manufacturer warranty for the panel and main breaker (typically 10 years), branch-circuit breakers (typically 1 to 10 years), and smart-panel hardware separately. We explain what voids each. | Warranty is whatever the box says. |
| What is your labor warranty on the panel installation, and does it cover related troubleshooting? | We offer a written labor warranty (typically 1 to 5 years) covering workmanship on terminations, conduit runs, and grounding work. We explain what is covered and what is not. | Our work is good, no warranty needed. |
| Based on the Article 220 result, what do you recommend as the best next action and why? | We propose a single recommended option with the load-calc rationale, list one alternative with the cost delta, and explain what would change our recommendation. We are clear about which costs are firm and which depend on the utility or AHJ. | Whatever you want is fine. |
General questions for every contractor
| Question | Good response | Bad response |
|---|---|---|
| Can you separate confirmed incentives from assumed incentives in the quote? | Yes. We mark each incentive as confirmed (with program ID and current reservation status) versus assumed (subject to verification before contract). | All listed incentives are yours. |
| Does the federal Section 25C tax credit apply to my installation? | Section 25C expired December 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21). Installations completed in 2026 or later do not qualify for §25C. | You'll get the federal credit on your taxes. |
| Are BayREN Home+ rebates available for this installation? | BayREN Home+ may apply for Bay Area homeowners; we verify the program is currently funded and that the equipment qualifies before submitting. | BayREN always pays out automatically. |
| What is the equipment and labor warranty, and what voids it? | We provide the manufacturer warranty (typically 10 years parts when registered) plus our labor warranty (1-2 years standard); we explain what voids coverage including improper electrical, missing filters, and skipped annual service. | The warranty covers everything forever. |
| What is the best next step before signing a contract? | Schedule a site visit and Manual J load calculation, get a written quote with line-item pricing, verify all incentive reservation requirements, and confirm permit handling. | Sign today to lock in pricing before incentives expire. |
| Who pulls the mechanical and electrical permits with City of Oakland Planning and Building and how is that visible to me? | We pull the mechanical permit through the City of Oakland Planning and Building Department (oaklandca.gov/departments/planning-building, online via the Tyler EnerGov self-service portal) under our contractor license, plus a separate electrical permit if the new circuit requires it. You receive copies of both permit applications, the permit numbers, the inspection schedule, and the final card sign-offs. Permit fees are itemized separately in the proposal, not bundled into labor. Oakland review timelines run longer than SJ or SF; we set expectations honestly. | Most heat-pump swaps in Oakland don't need a permit. |
| How does Ava Community Energy's Bright Choice default vs Renewable 100 opt-up affect the carbon-accounting story of switching to a heat pump? | Ava Community Energy (the CCA formerly known as East Bay Community Energy, rebranded October 2023) is the default electric-supply provider in Oakland. The default Bright Choice product is around 62 percent eligible renewable per Ava's published 2024 figure and is priced about 0.5 percent below PG&E generation rates; Renewable 100 is 100 percent RPS-eligible renewable for roughly an extra 1.75 cents per kWh above PG&E. Switching from a gas furnace to an electric heat pump moves combustion load onto your Ava supply, so the carbon outcome depends on which product you are on. We do not promise a specific carbon number; we explain the product tiers and let you decide on avaenergy.org. The supplier-side rate (Ava) replaces PG&E's generation portion; the delivery portion still goes to PG&E. | Ava makes heat pumps automatically zero-carbon. |
| What rebates does BayREN Home+ pay for a heat-pump HVAC swap in Oakland? | Oakland is in Alameda County and inside the nine-county BayREN service area. BayREN Home+ pays a rebate of around $1,000 for a qualifying heat-pump HVAC installation; we confirm the current amount on bayren.org before quoting. Reservation order matters; we submit the application before equipment delivery and document the reservation number in the proposal. We do not list a BayREN line item until the reservation is confirmed. | BayREN pays $5,000 for any heat pump. |
| What about TECH Clean California and HEEHRA for a heat pump in Oakland? | TECH Clean California was reported fully reserved as of November 14, 2025; HEEHRA was reported fully reserved statewide as of February 24, 2026. Both are currently waitlisted; new reservations may or may not move during the project window. We list the program status honestly as waitlisted in the proposal and do not include the dollar amount as a confirmed deduction. We monitor selfgenca.com and the program portals and update you if anything reopens. | TECH and HEEHRA always pay out; you qualify. |
| After we install the heat pump, which PG&E rate plan are you recommending: E-ELEC, E-TOU-C, EV2-A, or something else? | We compare three scenarios using your prior 12 months of usage: E-ELEC (whole-home rate optimized for electrified loads with HP HVAC plus HPWH plus EV), E-TOU-C as the baseline, and EV2-A only if EV ownership is part of the picture. The March 2026 Base Services Charge ($24 per month) applies on the relevant plans; we factor it in. We share a spreadsheet showing modeled monthly cost on each plan. The right plan depends on which other electrified loads you have or are planning. | E-ELEC is always cheapest after a heat pump. |
| We are in the Oakland Hills and PG&E PSPS events happen regularly. How does that affect the heat-pump decision? | PG&E PSPS events in the Oakland Hills can run 8-24 hours, occasionally longer in extreme weather. A heat pump itself is no more or less PSPS-resilient than the gas furnace it replaces; both depend on power for the blower and controls. The real question is whether you want a battery in scope for backup. If yes, we size the battery to cover the heat pump's compressor surge (typically 6-9 kW continuous + LRA inrush for a 3-4 ton unit), critical lighting, refrigerator, Wi-Fi, and any medical equipment for the design outage. The choice influences battery sizing more than heat-pump selection. | PSPS just means buy a heat pump; it solves outages. |
| Should I expect the federal 25C credit on this heat pump? | The federal Energy Efficient Home Improvement Credit (Section 25C) expired December 31, 2025 under the One Big Beautiful Bill Act (OBBBA, PL 119-21). Installations placed in service in 2026 or later are not eligible. We list the credit as expired in the proposal and do not deduct it from your project cost. If you placed the system in service before December 31, 2025 the credit may apply; we document the placed-in-service date. | 25C still applies; we deduct it from your quote. |
| Does HEEHRA currently offer a rebate for heat pump water heaters? | Heat pump water heaters are a HEEHRA-eligible category statewide; CPUC reservations for HEEHRA were fully subscribed as of February 2026. We verify current status at energy.ca.gov and may mark HEEHRA as assumed until a reservation is confirmed. | HEEHRA pays out automatically for every install. |
| Does the unit qualify for TECH Clean California, and what is the current status? | TECH Clean California covers qualifying heat pump water heaters statewide; we verify current scope, eligible model lists, and per-unit incentive amount at techcleanca.com before citing a number in the quote. | TECH covers every model on the market. |
| Does the BayREN Home+ program offer a rebate path for heat pump water heaters? | BayREN Home+ has historically offered a heat pump water heater rebate for Bay Area homeowners. We verify current program scope and rebate amount at bayrenhomes.org before submitting. | BayREN funds every Bay Area install at the same amount. |
| Does the federal Section 25C credit apply to the install? | Section 25C expired December 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21). Heat pump water heater installations completed in 2026 or later do not qualify for the §25C federal tax credit. | The federal credit applies as long as you install before tax day. |
| Who coordinates the plumber and electrician — your team or me? | We coordinate plumber and electrician scheduling under a single project lead, sequence the work so electrical and plumbing don't conflict, and present a unified quote with both trades line-itemed. | You hire and coordinate the electrician separately. |
| Will the quote separate confirmed incentives from assumed incentives? | Yes. Each incentive line shows program ID, reservation status (confirmed vs assumed), and a verify-by date. HEEHRA, TECH, BayREN, and SJCE EcoHome are commonly marked assumed until reservation is granted. | All listed incentives are yours. |
| What is the best next step before signing a heat pump water heater contract? | Get a written quote with line-item pricing covering model, capacity in gallons, first-hour rating, UEF, install location and ducting plan, dedicated electrical circuit, condensate drain plan, gas decommissioning (if applicable), SJPermits.org mechanical and electrical permit fees, and incentives separated into confirmed vs assumed with verify-by dates. | Sign today to lock in the incentive before it runs out. |
| Who pulls the plumbing and electrical permits with City of Oakland Planning and Building for an HPWH install? | We pull a plumbing permit through Oakland P&B (oaklandca.gov/departments/planning-building, via the Tyler EnerGov self-service portal) plus a separate electrical permit for the 240V or 120V circuit. The application includes the gas-line decommission detail if removing a gas water heater (capped, labeled, pressure-tested per CPC), the HPWH unit cut sheet, condensate drain routing, and the 240V circuit specifications. Permit fees are itemized; we share copies on submission. Final card sign-off happens at inspection. | HPWH swaps don't need permits in Oakland. |
| What does BayREN Home+ pay for an HPWH in Oakland? | Oakland is in Alameda County and inside the nine-county BayREN service area. BayREN Home+ pays a rebate of around $1,000 for a qualifying HPWH installation (Tier 1 or Tier 2 NEEA-listed unit); the current amount is confirmed on bayren.org before quoting. Reservation order matters; we submit before equipment delivery and document the reservation number in the proposal. We do not list a BayREN line item until the reservation is confirmed. | BayREN pays $3,000 for any HPWH. |
| What about TECH Clean California and HEEHRA for an HPWH in Oakland? | TECH Clean California was reported fully reserved as of November 14, 2025; HEEHRA was reported fully reserved statewide as of February 24, 2026. Both are currently waitlisted; new reservations may or may not move during the project window. We list the program status honestly as waitlisted in the proposal and do not include the dollar amount as a confirmed deduction. The realistic confirmed rebate path in Oakland is BayREN Home+. | TECH and HEEHRA always pay; you qualify. |
| Does the federal 25C credit apply to the HPWH in 2026? | The federal Energy Efficient Home Improvement Credit (Section 25C) expired December 31, 2025 under the One Big Beautiful Bill Act (OBBBA, PL 119-21). HPWH installs placed in service in 2026 or later are not eligible for §25C. We list the credit as expired in the proposal and do not deduct it. If the system was placed in service on or before December 31, 2025 the credit may apply; we document the placed-in-service date. | 25C still applies; we deduct it from your HPWH cost. |
| Does Ava Community Energy supply choice (Bright Choice default vs Renewable 100 opt-up) change the HPWH cost calculation? | Ava Community Energy (the CCA formerly known as East Bay Community Energy, rebranded October 2023) supplies the generation portion of the Oakland electric bill; PG&E still delivers. The default Bright Choice product is around 62 percent eligible renewable per Ava's 2024 figure and is priced about 0.5 percent below PG&E generation rates; Renewable 100 is 100 percent RPS-eligible renewable at roughly an extra 1.75 cents per kWh above PG&E. The HPWH typically uses 1500-3500 kWh per year depending on household size; opting up from Bright Choice to Renewable 100 adds roughly $25-$60 per year on the supply side at that consumption range. We model both supply options in the post-HPWH bill if you want the comparison. The carbon outcome depends on which product you are on. | Ava makes HPWH electricity free. |
| What is the best next step before signing an Oakland HPWH contract? | Schedule a site visit, confirm the install location (garage or basement preferred over conditioned space), confirm electrical capacity (240V or 120V plug-in path), pre-reserve BayREN Home+ on bayren.org, check TECH and HEEHRA waitlist status, and get a written quote with line-item pricing: HPWH unit, electrical work, plumbing work, condensate drain, Oakland P&B permits, commissioning. Compare two or three bids on the same scope and HPWH brand. | Sign today; the rebate will expire tomorrow. |
| Does the federal §30C credit for EV charging equipment apply to my install? | §30C federal EV-charger credit had a statutory cliff on June 30, 2026 (OBBBA Public Law 119-21). Installations permitted and operational before that date may have qualified in eligible census tracts (low-income community or non-urban) — verify with your contractor and tax preparer. Installations after June 30, 2026 do not qualify. | You will receive the federal credit on your taxes. |
| Are PG&E EV charger rebates currently available? | PG&E's residential EV charger rebate program changes periodically; we verify current funding and program rules with PG&E before submitting on your behalf. | PG&E always pays out. |
| Will the quote separate confirmed incentives from assumed incentives? | Yes. Each incentive is marked confirmed (with program ID and current funding status) or assumed (subject to verification before contract signing). | All listed incentives are yours. |
| What is the warranty on the charger hardware, and what voids it? | The manufacturer typically warrants the charger for 3-5 years; we note that physical damage, surge events without a whole-home surge protector, and tampering may void coverage. | Warranty covers everything forever. |
| What is the best next step before signing a contract? | Get a written quote with line-item pricing including conduit footage, panel-capacity verification, an Article 220 load calc, and a clear permit and inspection plan. | Sign today to lock in pricing. |
| Should I plan for bidirectional (vehicle-to-home) charging now or later? | We may explain that bidirectional charging requires a charger with V2H or V2G capability plus a compatible EV; we recommend pre-pulling extra conductors only if you have a specific vehicle target. | Bidirectional is mandatory; install it now. |
| Which PG&E rate plan are you recommending after the charger install: EV2-A, E-ELEC, or staying on E-TOU-C? | We compare three scenarios using your prior 12 months of PG&E usage: EV2-A (single TOU with EV-specific super-off-peak window midnight-3pm at the lowest rate), E-ELEC (whole-home plan optimized for stacked electrified loads with the March 2026 $24 per month Base Services Charge), and E-TOU-C as the baseline. We share a spreadsheet showing modeled monthly cost on each plan with your charging pattern. The right choice depends on whether HP HVAC, HPWH, or battery are also in scope. | EV2-A is always cheapest for any EV owner. |
| What does the City of Oakland Planning and Building electrical permit process look like for a 240V Level 2 EV charger? | We pull an Oakland Planning and Building electrical permit (oaklandca.gov/departments/planning-building) via the Tyler EnerGov self-service portal under our contractor license. The application includes a load-calculation page, circuit specifications, GFCI requirements per current CEC, and the EVSE manufacturer cut sheet. Permit fees are itemized in the proposal. Final card sign-off happens at the inspection visit; Oakland inspection slots have typically run 2-4 weeks from submission. We share copies of all docs with you. | EV chargers don't need permits in Oakland. |
| Should I plan around the federal 30C EV-charger credit cliff and how does that affect timing in Oakland? | §30C federal EV-charger credit had a statutory cliff on June 30, 2026 (OBBBA Public Law 119-21). Installations placed in service after June 30, 2026 are not eligible. The credit also required the address to be in an eligible census tract; many flatland Oakland addresses (West Oakland, parts of East Oakland) sat in eligible tracts while many Oakland Hills addresses did not. For pre-cliff installs that may have qualified, we verified the census-tract status on the IRS / Treasury Section 30C eligibility lookup before listing the credit, and we listed the placed-in-service deadline plainly. We do not assume eligibility for any install — verify with your tax preparer. | Just put the credit in the quote; the IRS won't check. |
| Does Ava Community Energy offer any EV-specific programs or rebates I should ask about? | Ava Community Energy (the CCA formerly known as East Bay Community Energy, rebranded October 2023) administers some EV-related programs in Alameda County including time-of-use education and periodic incentives; specific cash rebates on home EVSE installs are not consistently available. We check the current avaenergy.org program list before quoting and only list any program as a confirmed line item after the reservation is confirmed. We do not assume an Ava rebate is in play. | Ava has a $1,000 EV charger rebate; we'll deduct it. |
| What does the Oakland permit fee actually cost and how is it shown in the proposal? | Oakland P&B residential electrical permit fees for a single EVSE circuit typically run $200-$450 depending on the work valuation and any plan-check requirements. We itemize the fee as its own line item in the proposal, separate from labor, plus any inspection fee and plan-check fee. We do not bundle the permit fee into a flat labor rate. We share the receipt after submission. | Permit fee is included in labor; you don't need a breakdown. |
| If a PG&E PSPS event hits, can I still charge from the battery or do I lose EV access? | During a PSPS event the EVSE loses utility power. If you have a home battery configured for whole-home or partial backup, you can charge the EV from the battery; runtime depends on battery kWh capacity and EV draw. A 13.5 kWh Powerwall covers about 1 hour of full-rate 11.5 kW charging plus essential loads. We size the battery and configure backup-loads with the expected outage duration and EV-charge needs together; we do not assume the EV will be a backup-load priority over fridge, lights, and Wi-Fi. | Just don't charge during PSPS; nobody does that. |
| Does PG&E need to be notified before the EVSE goes in, separate from the permit? | PG&E does not require pre-notification for a residential Level 2 EVSE under typical service capacity, but the rate-plan switch (EV2-A or E-ELEC) is a customer-initiated action through your PG&E.com account and typically takes 1-2 billing cycles to take effect. If a panel or service upgrade is part of the work, PG&E coordination is required (service drop, meter relocation, service-entrance changes); we manage that filing and document the projected schedule. We do not assume PG&E will turn the new service same-day. | PG&E doesn't need to know; just install and start charging. |
| Does the federal Section 25D residential clean energy credit apply to my installation? | Section 25D expired December 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21). Installations completed in 2026 or later do not qualify for the 30 percent §25D credit. | You will receive the 30 percent federal credit on your taxes. |
| Does TECH Clean California currently offer a solar incentive? | TECH Clean California primarily targets heat pump HVAC and heat pump water heaters, not standalone solar. We verify current TECH program scope at techcleanca.com before citing any incentive. | TECH covers solar; assume the rebate applies. |
| Are BayREN Home+ rebates available for our solar or solar plus battery project? | BayREN Home+ is primarily a building shell and heat-pump program for Bay Area homeowners; we verify whether a solar or battery incentive is currently active at bayren.org and explain the application path if so. | BayREN always pays out for solar. |
| What is the best next step before signing a solar contract? | Get a written quote with line-item pricing including the design model output (kWh per year), shade analysis, panel and inverter make and model, permit and PG&E interconnection fees, production guarantee terms, and warranty terms. | Sign today to lock in pricing before incentives change. |
| How do solar permits work with City of Oakland Planning and Building? | We pull an Oakland Planning and Building electrical permit (oaklandca.gov/departments/planning-building, via the Tyler EnerGov self-service portal) plus a structural review if the array sits on an older Craftsman or bungalow roof. Oakland participates in SolarAPP+ for streamlined permitting on standard residential designs; we use it when eligible. PTO (permission to operate) from PG&E typically takes 2-6 weeks after final inspection. We share all permit applications and inspection cards. | Solar permits in Oakland are same-day; no review needed. |
| Is the federal 25D residential clean energy credit on the table for an Oakland install? | The federal Residential Clean Energy Credit (Section 25D) expired December 31, 2025 under the One Big Beautiful Bill Act (OBBBA, PL 119-21). Installations placed in service in 2026 or later are not eligible for §25D. We list the credit as expired in the proposal and do not deduct it from your project cost. If the system was placed in service on or before December 31, 2025 the credit may apply; we document the placed-in-service date. | 25D still applies; we deduct 30 percent from the quote. |
| Does BayREN Home+ rebate solar in Oakland? | BayREN Home+ primarily covers heat-pump HVAC, HPWH, and envelope retrofits; solar is not a direct BayREN Home+ rebate category as of last verification. If solar plus battery is bundled with a HP HVAC swap, the HP rebate may apply to that component. We confirm the current bayren.org program list before quoting and do not list a solar-rebate line item unless one is actually open. | BayREN pays $5,000 for solar. |
| What is the best next step before signing an Oakland solar contract? | Schedule the site visit, get the PVsyst or HelioScope production model with neighborhood-microclimate derate and shading analysis, confirm SolarAPP+ eligibility through Oakland P&B, decide on the NEM 3.0 self-consumption strategy (solar-only vs solar plus battery with SGIP), and get a written quote with all line items: panels, inverter, racking, labor, permits, structural review, monitoring. Compare two or three bids on the same scope. | Sign today; prices are going up. |
| Does the federal Section 25D residential clean energy credit apply to my battery install? | Section 25D expired December 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21). Battery installations completed in 2026 or later do not qualify for the 30 percent §25D credit. | You will receive the 30 percent federal credit on your taxes. |
| Does HEEHRA or TECH Clean California currently offer a battery incentive? | Neither HEEHRA nor TECH primarily fund residential batteries; SGIP is the main California battery program. We verify current TECH scope at techcleanca.com and HEEHRA status at energy.ca.gov before citing any battery incentive. | HEEHRA covers batteries automatically. |
| Will the quote separate confirmed SGIP incentives from assumed? | Yes. SGIP is marked confirmed only after pre-approval is granted and the funding tier is reserved; we mark the line as assumed in the quote until then and explain the reservation status. | All listed incentives are yours. |
| What is the best next step before signing a battery contract? | Get a written quote with line-item pricing including usable kWh, continuous AC inverter output, AC vs DC coupling, manufacturer warranty terms (years AND cycles AND throughput), labor warranty separately, SJPermits.org permit fees, PG&E interconnection plan, and an honest SGIP workflow: as of December 31, 2025 only the AB 209-funded RSSE budget accepts new applications and it is fully reserved (attrition-based waitlist via selfgenca.com), so the proposal documents the waitlist position rather than promising a rebate. | Sign today to lock in SGIP before funding runs out. |
| What does the Oakland Planning and Building permit process look like for a battery install? | We pull an Oakland P&B electrical permit (oaklandca.gov/departments/planning-building, via the Tyler EnerGov self-service portal). For wall-mounted batteries we confirm structural attachment per the manufacturer install manual; for floor-mounted (Tesla Powerwall 3 or FranklinWH) the floor anchor pattern goes in the permit drawings. Fire setback per CRC R331 (and R337 in the Hills FHSZ) is documented with measurements on the permit. Final card sign-off happens at inspection. We share all permit copies. Oakland review timelines run longer than SJ; we set expectations honestly. | Batteries under 20 kWh don't need permits. |
| Does the federal 25D credit apply to the battery in 2026? | The federal Residential Clean Energy Credit (Section 25D) expired December 31, 2025 under the One Big Beautiful Bill Act (OBBBA, PL 119-21). Battery installs placed in service in 2026 or later are not eligible. We list the credit as expired in the proposal and do not deduct it. If the system was placed in service on or before December 31, 2025 the credit may apply; we document the placed-in-service date. | 25D applies; we deduct 30 percent from the battery cost. |
| What is the best next step before signing an Oakland battery contract? | Schedule a site visit, verify SGIP budget status on selfgenca.com (as of December 31, 2025 the ratepayer-funded General Market, Equity, and Equity Resiliency budgets are closed to new applications; only the AB 209-funded RSSE budget remains open and it is fully reserved — new apps go to an attrition-based waitlist, so we document the waitlist position rather than promising a rebate), decide on the backup-loads list and battery sizing, run the NEM 3.0 self-consumption model on your PG&E rate plan (E-ELEC or EV2-A), and get a written quote with line-item pricing: battery hardware, inverter, gateway, installation labor, Oakland P&B permits, structural attachment if wall-mounted, monitoring setup. Compare two or three bids on the same scope and battery brand. | Sign today; SGIP will run out tomorrow. |
Good vs reasonable vs bad answers
| Question | Good | Reasonable | Bad |
|---|---|---|---|
| Will you perform a Manual J load calculation before sizing the heat pump? | Yes. We calculate heating and cooling load based on home size, insulation, windows, orientation, ductwork, and infiltration. | We will run Manual J after a site visit and duct inspection. | We just replace the existing furnace with the same tonnage system. |
| Will you inspect ducts before specifying the heat pump? | Yes. We inspect duct size, leakage rate, return air paths, and airflow because heat pumps need good airflow at moderate static pressure. | We inspect ducts during install and modify if airflow targets are not met. | Ducts are always fine; no need to check. |
| How do you decide system size in tons or BTU? | We explain tons and BTU using Manual J inputs, not just square footage. | — | We use 1 ton per 500 square feet as a rule of thumb. |
| What refrigerant does the system use, and is it compliant with current EPA rules? | We specify the refrigerant (R-454B or R-32 for new systems after the EPA A2L transition) and confirm it meets current code. | — | Refrigerant does not affect homeowners. |
| Are you a TECH Clean California enrolled contractor, and is the program currently funded for heat pump HVAC? | We verify current TECH Clean California program status (single-family Phase I has been fully reserved since November 2025) and explain whether it applies before signing. | — | TECH always pays out; assume the rebate is yours. |
| Does my household income make us eligible for HEEHRA, and what does that involve? | We confirm income eligibility (below 80 percent AMI or 80 to 150 percent AMI), explain pre-approval is required, and verify program status (Phase I single-family is currently fully reserved per CEC as of 2026-02-24). | HEEHRA may apply if eligibility is verified after a site visit and income documentation. | HEEHRA covers everyone; you qualify automatically. |
| What is my panel size and service size, and is it adequate for adding a heat pump? | We inspect the panel labels and main breaker on site, explain whether 100A, 125A, 150A, or 200A is adequate, and verify the service drop matches the panel. | — | We guess from a photo only; no on-site inspection. |
| Can we avoid a service upgrade by using smart load management? | Possibly. We will perform a formal Article 220 load calculation, propose smart load management for HVAC + EV + water heater coordination, and explain the tradeoff vs upgrading. | We need to see your panel labels and load history before recommending. | You always need 200A; no calculation needed. |
| Will the heat pump need a new dedicated circuit, and what breaker size? | Yes, the outdoor unit and air handler each typically need dedicated circuits at the breaker sizes the manufacturer specifies (often 30-50A for outdoor, 15-30A for indoor). | — | Any spare breaker will work. |
| Can you separate confirmed incentives from assumed incentives in the quote? | Yes. We mark each incentive as confirmed (with program ID and current reservation status) versus assumed (subject to verification before contract). | — | All listed incentives are yours. |
| Does the federal Section 25C tax credit apply to my installation? | Section 25C expired December 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21). Installations completed in 2026 or later do not qualify for §25C. | — | You'll get the federal credit on your taxes. |
| Are BayREN Home+ rebates available for this installation? | BayREN Home+ may apply for Bay Area homeowners; we verify the program is currently funded and that the equipment qualifies before submitting. | — | BayREN always pays out automatically. |
| What is the equipment and labor warranty, and what voids it? | We provide the manufacturer warranty (typically 10 years parts when registered) plus our labor warranty (1-2 years standard); we explain what voids coverage including improper electrical, missing filters, and skipped annual service. | — | The warranty covers everything forever. |
| What is the best next step before signing a contract? | Schedule a site visit and Manual J load calculation, get a written quote with line-item pricing, verify all incentive reservation requirements, and confirm permit handling. | — | Sign today to lock in pricing before incentives expire. |
| How does BAAQMD Rule 9-4 affect a like-for-like natural-gas furnace replacement at this Oakland address? | BAAQMD Rule 9-4 (amended March 15, 2023) sets a zero-NOx standard for new residential furnaces sold or installed in the Bay Area effective January 1, 2029. We confirm the effective date against your appliance class and timing, document the citation in writing, and walk through whether a heat-pump path avoids a regulatory dead-end before the cutover. We do not assume the rule has already kicked in for furnaces; we read the actual schedule. | We confirm the BAAQMD Rule 9-4 effective date against your timing; a heat-pump path sidesteps the future cutover. | BAAQMD rules don't affect Oakland homeowners. |
| Does BAAQMD Rule 9-6 affect a gas water heater I'm leaving in place during the HVAC replacement? | BAAQMD Rule 9-6 sets a zero-NOx standard for new residential and small commercial water heaters under 75,000 BTU/hr effective January 1, 2027. The rule applies to new units sold or installed; it does not retroactively force you to remove a working gas water heater. We document the effective date and let you decide whether to bundle the HPWH switch with the HP HVAC project given the upcoming cutover. We do not pressure-sell the bundle on a rule that has not yet taken effect. | Rule 9-6 applies to new units starting January 1, 2027; we share the citation and let you decide on bundling. | Rule 9-6 forces you to remove your gas water heater immediately. |
| How do you size differently for Oakland Hills vs flatland Oakland given the East Bay summer heat? | Oakland Hills (Montclair, Skyline, Joaquin Miller) summer design temperatures run 5-10 degrees F warmer than flatland Oakland (Lake Merritt, West Oakland, Fruitvale) and materially warmer than coastal SF. We use ACCA Manual J 8th Edition with the ASHRAE 99 percent heating design value (around 37-40 degrees F for the East Bay) and the cooling-load demand for the actual neighborhood. We do not use SF coastal sizing for an Oakland Hills home, and we do not use East County inland sizing for a Berkeley-border flatland home. We share the Manual J output. | We run Manual J after the site visit; Oakland Hills usually lands larger cooling tonnage than flatland Oakland for the same square footage. | We use a 1-ton-per-500-square-feet rule of thumb. |
| Who pulls the mechanical and electrical permits with City of Oakland Planning and Building and how is that visible to me? | We pull the mechanical permit through the City of Oakland Planning and Building Department (oaklandca.gov/departments/planning-building, online via the Tyler EnerGov self-service portal) under our contractor license, plus a separate electrical permit if the new circuit requires it. You receive copies of both permit applications, the permit numbers, the inspection schedule, and the final card sign-offs. Permit fees are itemized separately in the proposal, not bundled into labor. Oakland review timelines run longer than SJ or SF; we set expectations honestly. | We pull permits through Oakland Planning and Building; we share the application copies once submitted. | Most heat-pump swaps in Oakland don't need a permit. |
| How does Ava Community Energy's Bright Choice default vs Renewable 100 opt-up affect the carbon-accounting story of switching to a heat pump? | Ava Community Energy (the CCA formerly known as East Bay Community Energy, rebranded October 2023) is the default electric-supply provider in Oakland. The default Bright Choice product is around 62 percent eligible renewable per Ava's published 2024 figure and is priced about 0.5 percent below PG&E generation rates; Renewable 100 is 100 percent RPS-eligible renewable for roughly an extra 1.75 cents per kWh above PG&E. Switching from a gas furnace to an electric heat pump moves combustion load onto your Ava supply, so the carbon outcome depends on which product you are on. We do not promise a specific carbon number; we explain the product tiers and let you decide on avaenergy.org. The supplier-side rate (Ava) replaces PG&E's generation portion; the delivery portion still goes to PG&E. | If carbon accounting matters to you, Renewable 100 is the opt-up on avaenergy.org; the per-kWh premium is small. | Ava makes heat pumps automatically zero-carbon. |
| What rebates does BayREN Home+ pay for a heat-pump HVAC swap in Oakland? | Oakland is in Alameda County and inside the nine-county BayREN service area. BayREN Home+ pays a rebate of around $1,000 for a qualifying heat-pump HVAC installation; we confirm the current amount on bayren.org before quoting. Reservation order matters; we submit the application before equipment delivery and document the reservation number in the proposal. We do not list a BayREN line item until the reservation is confirmed. | BayREN Home+ covers Oakland; we confirm the current rebate amount on bayren.org and document the reservation number. | BayREN pays $5,000 for any heat pump. |
| What about TECH Clean California and HEEHRA for a heat pump in Oakland? | TECH Clean California was reported fully reserved as of November 14, 2025; HEEHRA was reported fully reserved statewide as of February 24, 2026. Both are currently waitlisted; new reservations may or may not move during the project window. We list the program status honestly as waitlisted in the proposal and do not include the dollar amount as a confirmed deduction. We monitor selfgenca.com and the program portals and update you if anything reopens. | TECH and HEEHRA are both waitlisted; we list them as pending in the proposal, not as confirmed savings. | TECH and HEEHRA always pay out; you qualify. |
| After we install the heat pump, which PG&E rate plan are you recommending: E-ELEC, E-TOU-C, EV2-A, or something else? | We compare three scenarios using your prior 12 months of usage: E-ELEC (whole-home rate optimized for electrified loads with HP HVAC plus HPWH plus EV), E-TOU-C as the baseline, and EV2-A only if EV ownership is part of the picture. The March 2026 Base Services Charge ($24 per month) applies on the relevant plans; we factor it in. We share a spreadsheet showing modeled monthly cost on each plan. The right plan depends on which other electrified loads you have or are planning. | E-ELEC is usually the right post-heat-pump path if other electrified loads are coming; we model both before you commit. | E-ELEC is always cheapest after a heat pump. |
| We're in an older Craftsman or 1920s bungalow. How does that change your Manual J assumptions and equipment choice? | Older East Bay Craftsman and bungalow homes typically have minimal wall insulation, single-pane original wood-sash windows or first-generation replacements, and sometimes unconditioned crawl spaces and attics. We adjust the envelope inputs in Manual J accordingly rather than using a 2025 build assumption. We often recommend an envelope tune (attic insulation, ducting where feasible, sealed crawl space) alongside the heat-pump install so we are not oversizing to overcome an avoidable leak. We share both the unimproved and improved Manual J runs. | We use Craftsman-specific envelope assumptions in Manual J; a small envelope tune often lets us right-size smaller. | Older homes need more tonnage; we just oversize. |
| We've heard knob-and-tube wiring is common in older East Bay homes. Will that block the heat-pump install? | Knob-and-tube wiring is widespread in Craftsman, bungalow, and older West Oakland and Oakland Hills homes. Oakland Planning and Building generally treats active knob-and-tube as an existing condition that does not by itself block a new dedicated circuit for a heat pump; however, if the new circuit ties into a knob-and-tube branch or the panel needs upgrade, rewiring is often required. Some homeowner insurance carriers also require rewiring. We assess at the site visit, list any required rewiring scope as a line item, and do not bury it in labor. | Knob-and-tube assessment happens at the site visit; required rewiring is itemized in the proposal as its own scope. | Knob-and-tube is fine; we just splice the new circuit in. |
| Given Oakland's climate, is dual-fuel (heat pump plus gas backup) worth it or should we go all-electric? | East Bay heating design temperatures rarely fall below the mid-30s F. A modern inverter-driven cold-climate heat pump holds rated capacity well within Oakland's range; a gas backup is usually unnecessary in this climate. The choice is driven by whether you want to retain a working gas furnace for resilience during PG&E outages, what BAAQMD Rule 9-4 timing means for your replacement window, and whether you have an oversized cooling load. We model both options and let you decide. | All-electric is usually fine in Oakland's climate; dual-fuel is more about resilience preference than performance need. | Always keep a gas backup; heat pumps fail in the cold. |
| Which refrigerant are you specifying and what does A2L safety mean for an Oakland install? | Effective January 1, 2025, AIM Act-driven federal rules require new residential heat pumps to use R-454B or R-32 (both A2L mildly-flammable refrigerants) rather than R-410A. Manufacturers have shifted accordingly. A2L refrigerants are safe when installed per manufacturer instructions; indoor unit charge limits, leak-detection sensor requirements on ducted systems, and equipment-room ventilation rules apply. We document the refrigerant, charge, and any required leak-detection sensor in the proposal and confirm Oakland P&B will sign off. | We specify R-454B or R-32 per current code; the refrigerant, charge, and any leak-detection requirements are documented in the proposal. | R-410A is fine; we'll just use that. |
| Where will the outdoor unit go and does Oakland have a noise ordinance to worry about? | Oakland Municipal Code Chapter 8.18 sets noise limits at residential property lines, typically 60 dBA daytime and 45 dBA nighttime. A typical modern inverter heat pump outdoor unit runs 55-65 dBA at 3 feet; with setback distance from the property line, sound-isolation pads, and orientation away from neighbor bedrooms it generally meets Oakland's limits. We document the unit's sound rating, the proposed setback, and any sound-isolation hardware in the proposal. We do not place the unit somewhere we have not verified meets the ordinance. | We site the outdoor unit for the Oakland noise ordinance setback and document the dBA measurement in the proposal. | Just put it anywhere; Oakland doesn't enforce noise. |
| We are in the Oakland Hills and PG&E PSPS events happen regularly. How does that affect the heat-pump decision? | PG&E PSPS events in the Oakland Hills can run 8-24 hours, occasionally longer in extreme weather. A heat pump itself is no more or less PSPS-resilient than the gas furnace it replaces; both depend on power for the blower and controls. The real question is whether you want a battery in scope for backup. If yes, we size the battery to cover the heat pump's compressor surge (typically 6-9 kW continuous + LRA inrush for a 3-4 ton unit), critical lighting, refrigerator, Wi-Fi, and any medical equipment for the design outage. The choice influences battery sizing more than heat-pump selection. | Heat pumps are PSPS-neutral; if outage resilience matters, the battery sizing exercise drives the decision more than the heat-pump model. | PSPS just means buy a heat pump; it solves outages. |
| Beyond Manual J, do you run Manual S and Manual D and do you share the outputs? | Manual J sets the load; Manual S selects the right equipment to meet that load (capacity, modulation range, defrost behavior); Manual D sizes the ducts to deliver the airflow without static-pressure penalties. Many East Bay retrofits inherit undersized return ducts that limit airflow no matter the equipment. We run all three and share the outputs, including any required duct modifications as a line item. | Manual S and D drive equipment selection and duct sizing; we share the outputs. | Manual J is enough; the other two are overkill. |
| Should I expect the federal 25C credit on this heat pump? | The federal Energy Efficient Home Improvement Credit (Section 25C) expired December 31, 2025 under the One Big Beautiful Bill Act (OBBBA, PL 119-21). Installations placed in service in 2026 or later are not eligible. We list the credit as expired in the proposal and do not deduct it from your project cost. If you placed the system in service before December 31, 2025 the credit may apply; we document the placed-in-service date. | 25C expired on December 31, 2025 under OBBBA; we do not deduct it for 2026 installs. | 25C still applies; we deduct it from your quote. |
| What does commissioning look like at the end of the job and do you give me the report? | At commissioning we verify static pressure with a manometer (target around 0.5 in.w.c. on most residential ducted systems), set airflow via measurement at each register, verify charge by superheat or subcooling per manufacturer spec for R-454B or R-32, log compressor amp draw, and confirm thermostat communication. We provide a signed commissioning sheet with the measured values. Without commissioning a 'right-sized' system can still underperform 20-30 percent. | We commission and share the signed sheet; airflow, charge, and static pressure are measured. | Commissioning is just an upsell; modern equipment self-tunes. |
| What warranty terms apply and does Oakland's proximity to the Bay affect equipment lifespan? | Typical residential warranties on R-454B / R-32 heat pumps run 10 years parts and 1-2 years labor when registered with the manufacturer within 60 days; some platforms (Mitsubishi Diamond Contractor, Daikin Comfort Pro) extend labor to 10-12 years when installed by certified contractors. Outdoor units within 1-2 miles of the Bay shoreline (West Oakland, Jack London) see salt-air exposure; we either specify the manufacturer coastal package (corrosion-resistant coil and fins) or document why standard equipment is appropriate. We register the warranty for you and share the confirmation. | Warranty terms are listed in the proposal; we register on your behalf and share confirmation. Coastal package applies for Bay-adjacent addresses. | Warranty is automatic; the salesperson handles it. |
| If we go all-electric, is there a backup-heat strategy or is the heat pump on its own? | Modern cold-climate inverter heat pumps hold rated capacity to about 5 degrees F or lower, which is far below any Oakland design condition. Auxiliary heat (electric strip) is typically not needed for Oakland's climate; we leave it out of the install unless Manual J shows a specific deficit at design conditions. Strip heat is expensive to run and adds peak demand. If you are concerned about resilience during a deep cold snap, a small ductless head in the main living space provides redundancy without strip heat. | Strip heat is usually unnecessary in Oakland; we omit it unless Manual J shows a specific gap. | Always add strip heat; you can never have too much backup. |
| We are in the Oakland Hills WUI zone. Does that affect outdoor-unit siting or materials? | Oakland Hills addresses in the CAL FIRE Very High Fire Hazard Severity Zone (Montclair, Skyline, Joaquin Miller, Piedmont border) fall under California Residential Code Chapter R337 for wildfire-resistant construction. Outdoor equipment siting against eave overhangs, near combustible landscaping, or in zone-0 (the first 5 feet of defensible space) needs ignition-resistant placement and sometimes spark-arrestor screening on intake louvers. We document the FHSZ designation against the address, site the unit per R337 setbacks, and use ignition-resistant materials where required. | We verify the FHSZ designation against the address and site the outdoor unit per CRC R337 for Oakland Hills installs. | WUI rules don't apply to mechanical equipment. |
| Where will the heat pump water heater go, and does the location have adequate air volume? | We assess garage and utility room candidates (heat pump water heaters need roughly 700 to 1000 cubic feet of conditioned air around the unit, or a ducted exhaust path), evaluate noise impact, and confirm clearance per the manufacturer's install manual. | — | Any closet works for a heat pump water heater. |
| How will you handle the condensate drain? | We route a gravity drain to an approved disposal location or use a condensate pump; we explain freeze risk and overflow safety per CPC, and itemize the work in the quote. | — | Condensate isn't really an issue. |
| Does the install require a dedicated electrical circuit, and what size? | Standard heat pump water heaters typically need a dedicated 30A 240V circuit; some 120V hybrid models can operate on a 15A or 20A circuit at reduced capacity. We size the circuit per the manufacturer's data plate and document conductor gauge and breaker rating in the quote. | — | Share the circuit with the dishwasher. |
| How will you size the tank, 50, 65, or 80 gallons? | We size from household occupancy, peak-hour fixture demand (showers, dishwasher, clothes washer simultaneity), and recovery preferences. A typical 3-to-4-person household lands on a 65 or 80 gallon unit to compensate for slower heat pump recovery vs gas. | — | Match the gallons of whatever tank is there now. |
| What is the first-hour rating of the proposed unit, and is it sufficient for our peak demand? | We provide the manufacturer's first-hour rating (gallons delivered in the first hour of peak use) and compare it to your typical morning or evening peak demand. We may suggest a larger tank or a mixing valve strategy when the rating runs tight. | — | First-hour rating isn't really relevant. |
| What is the Uniform Energy Factor (UEF) of the proposed unit, and how does it affect rebate eligibility? | We document the UEF on the spec sheet (modern heat pump water heaters typically range 3.0 to 4.0+ UEF). Many rebates require UEF at or above a threshold (often 3.0) or a NEEA Advanced Water Heater Specification tier rating; we confirm the eligible tier before submitting. | — | UEF doesn't matter for rebates. |
| Will the install be ambient (drawing from the room) or ducted? | Ambient installs are simplest and cheapest in a garage or large utility room. Conditioned-space installs may need ducted intake or exhaust to avoid cooling the living space; ducting adds labor and material cost. We model the tradeoff in the quote. | — | Ducting is always required. |
| What operating modes does the unit support, and which one do you recommend by default? | Most modern units offer heat-pump-only (most efficient), hybrid (heat pump plus resistance backup on high demand), and resistance-only (emergency or cold-snap) modes. We recommend hybrid as a default and explain how mode choice changes runtime and operating cost. | — | Modes are a gimmick; leave it on resistance. |
| What is the manufacturer warranty on the tank, the heat pump compressor, and labor? | Most residential heat pump water heaters carry a 10-year tank warranty and a separate compressor warranty (often shorter). We provide the spec sheet and itemize our labor warranty separately so they aren't confused. | — | Lifetime warranty; no fine print. |
| Does HEEHRA currently offer a rebate for heat pump water heaters? | Heat pump water heaters are a HEEHRA-eligible category statewide; CPUC reservations for HEEHRA were fully subscribed as of February 2026. We verify current status at energy.ca.gov and may mark HEEHRA as assumed until a reservation is confirmed. | — | HEEHRA pays out automatically for every install. |
| Does the unit qualify for TECH Clean California, and what is the current status? | TECH Clean California covers qualifying heat pump water heaters statewide; we verify current scope, eligible model lists, and per-unit incentive amount at techcleanca.com before citing a number in the quote. | — | TECH covers every model on the market. |
| Does the BayREN Home+ program offer a rebate path for heat pump water heaters? | BayREN Home+ has historically offered a heat pump water heater rebate for Bay Area homeowners. We verify current program scope and rebate amount at bayrenhomes.org before submitting. | — | BayREN funds every Bay Area install at the same amount. |
| Does the federal Section 25C credit apply to the install? | Section 25C expired December 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21). Heat pump water heater installations completed in 2026 or later do not qualify for the §25C federal tax credit. | — | The federal credit applies as long as you install before tax day. |
| Who coordinates the plumber and electrician — your team or me? | We coordinate plumber and electrician scheduling under a single project lead, sequence the work so electrical and plumbing don't conflict, and present a unified quote with both trades line-itemed. | — | You hire and coordinate the electrician separately. |
| If we are switching from gas, how will you decommission the gas line? | We cap and label the abandoned gas line per CPC, pressure-test or visually verify the cap, and remove the abandoned T&P discharge pipe if it conflicts with the new install. The work is itemized in the quote. | — | Just leave the old gas line where it is. |
| What is your post-install commissioning checklist? | Commissioning includes pressure testing the plumbing, verifying the T&P relief valve and discharge routing, confirming the condensate drain runs free, setting the default operating mode, and walking through the app and any user controls. | — | We turn it on and leave. |
| What is the expected recovery time after a high-demand event, like back-to-back showers? | In heat-pump-only mode, recovery is slower than gas (typically 2 to 3 hours to reheat a depleted tank). Hybrid mode shortens that. We explain mode tradeoffs and may recommend a larger tank or a mixing valve strategy when recovery is a concern. | — | Recovery is the same as gas; no tradeoff. |
| Will the quote separate confirmed incentives from assumed incentives? | Yes. Each incentive line shows program ID, reservation status (confirmed vs assumed), and a verify-by date. HEEHRA, TECH, BayREN, and SJCE EcoHome are commonly marked assumed until reservation is granted. | — | All listed incentives are yours. |
| What is the best next step before signing a heat pump water heater contract? | Get a written quote with line-item pricing covering model, capacity in gallons, first-hour rating, UEF, install location and ducting plan, dedicated electrical circuit, condensate drain plan, gas decommissioning (if applicable), SJPermits.org mechanical and electrical permit fees, and incentives separated into confirmed vs assumed with verify-by dates. | — | Sign today to lock in the incentive before it runs out. |
| Who pulls the plumbing and electrical permits with City of Oakland Planning and Building for an HPWH install? | We pull a plumbing permit through Oakland P&B (oaklandca.gov/departments/planning-building, via the Tyler EnerGov self-service portal) plus a separate electrical permit for the 240V or 120V circuit. The application includes the gas-line decommission detail if removing a gas water heater (capped, labeled, pressure-tested per CPC), the HPWH unit cut sheet, condensate drain routing, and the 240V circuit specifications. Permit fees are itemized; we share copies on submission. Final card sign-off happens at inspection. | We pull both plumbing and electrical permits through Oakland P&B and share copies on submission. | HPWH swaps don't need permits in Oakland. |
| What does BayREN Home+ pay for an HPWH in Oakland? | Oakland is in Alameda County and inside the nine-county BayREN service area. BayREN Home+ pays a rebate of around $1,000 for a qualifying HPWH installation (Tier 1 or Tier 2 NEEA-listed unit); the current amount is confirmed on bayren.org before quoting. Reservation order matters; we submit before equipment delivery and document the reservation number in the proposal. We do not list a BayREN line item until the reservation is confirmed. | BayREN Home+ covers Oakland HPWH installs; we confirm the current amount on bayren.org and document the reservation. | BayREN pays $3,000 for any HPWH. |
| How does BAAQMD Rule 9-6 affect our gas water heater replacement timing? | BAAQMD Rule 9-6 sets a zero-NOx standard for new residential and small commercial water heaters under 75,000 BTU/hr effective January 1, 2027. New gas water heaters sold or installed in Oakland after that date must meet the zero-NOx standard, which effectively eliminates the standard gas tank water heater from the Bay Area market. Existing units can stay in service; the rule does not retroactively require removal. We document the cutover date and let you decide whether to swap to a HPWH now or wait. A HPWH sidesteps the rule entirely. | Rule 9-6 takes effect January 1, 2027; we share the citation and let you decide on timing. | Rule 9-6 doesn't affect homeowners. |
| What about TECH Clean California and HEEHRA for an HPWH in Oakland? | TECH Clean California was reported fully reserved as of November 14, 2025; HEEHRA was reported fully reserved statewide as of February 24, 2026. Both are currently waitlisted; new reservations may or may not move during the project window. We list the program status honestly as waitlisted in the proposal and do not include the dollar amount as a confirmed deduction. The realistic confirmed rebate path in Oakland is BayREN Home+. | TECH and HEEHRA are both waitlisted; BayREN Home+ is the realistic confirmed path in Oakland. | TECH and HEEHRA always pay; you qualify. |
| Does the federal 25C credit apply to the HPWH in 2026? | The federal Energy Efficient Home Improvement Credit (Section 25C) expired December 31, 2025 under the One Big Beautiful Bill Act (OBBBA, PL 119-21). HPWH installs placed in service in 2026 or later are not eligible for §25C. We list the credit as expired in the proposal and do not deduct it. If the system was placed in service on or before December 31, 2025 the credit may apply; we document the placed-in-service date. | 25C expired December 31, 2025 under OBBBA; we do not deduct it for 2026 installs. | 25C still applies; we deduct it from your HPWH cost. |
| What Uniform Energy Factor (UEF) and NEEA tier do we need for rebate eligibility? | NEEA AWHS (Advanced Water Heater Specification) Tier 3 units have UEF >= 3.3 and qualify for BayREN Home+ at the highest rebate tier; Tier 1 has UEF >= 2.0 and qualifies for the basic rebate. Rheem ProTerra (UEF 3.7-4.0 depending on model), A.O. Smith Voltex AL (UEF 3.45), Bradford White AeroTherm (UEF 3.39), and Stiebel Eltron Accelera 300 (UEF 3.05) all qualify. Sanden CO2 has its own high UEF. We list the UEF and NEEA tier in the proposal so the rebate path is visible. | NEEA Tier 3 (UEF >= 3.3) qualifies at the highest rebate tier; we list the UEF and tier in the proposal. | All HPWH qualify for the same rebate; UEF doesn't matter. |
| How do you size the HPWH for the household and what does first-hour rating (FHR) mean? | FHR is the gallons of hot water the unit can deliver in the first hour starting from a full tank; it accounts for recovery while drawing. For a 2-3 person Oakland household we typically size 50 gal nominal tank with FHR around 60-65 gal; for 4-5 persons we go 65 or 80 gal nominal with FHR 80+. Tank size alone is misleading because HPWH recovery is slower than gas; FHR is the right metric. We share the FHR target against household peak draw. | FHR (not tank gallons) is the right metric; we share the FHR target against your peak-draw profile. | Just match the old tank size; that's enough. |
| Should the HPWH go in the garage, basement, or conditioned space? | HPWH performance and cooling-side output both depend on location. Oakland garages and basements (typical for older Craftsman and bungalow homes) work well because the cool dry air the HPWH exhausts is unused. Conditioned-space install moves the cool exhaust into your living area, which is fine in summer but adds heating load in winter. We recommend garage or basement when available; we duct the exhaust to outside or to a vented utility room only if there is no garage/basement option. We share the location rationale. | Garage or basement is the right call when available; we share location rationale based on your floor plan. | Anywhere is fine; HPWH location doesn't matter. |
| Do we need a new 240V circuit or can the plug-in 120V hybrid work? | Standard HPWH (Rheem ProTerra, A.O. Smith Voltex AL, Bradford White AeroTherm) need a 240V/30A circuit. The plug-in 120V Rheem ProTerra Plug-In Series runs on a standard 15A receptacle (with heat-pump-only mode, no resistance backup); recovery is slower. If running a new 240V circuit to the garage is expensive, the 120V plug-in is a viable path with longer recovery. We model both for your peak-draw profile and share the cost difference, including any panel work needed for the 240V option. | 240V is the standard path; 120V plug-in is viable if running a new circuit is costly. We model both. | Always do 240V; 120V plug-in is junk. |
| What refrigerant does the HPWH use and does it matter? | Most US HPWH (Rheem ProTerra, A.O. Smith Voltex AL, Bradford White AeroTherm, Stiebel Eltron Accelera 300) use R-134a or R-513A. Sanden HPWH uses CO2 (R-744), which has a much lower GWP (1 vs 1430 for R-134a) and higher heating capacity at low ambient temps. For most Oakland installs the standard R-134a or R-513A is fine; for the Hills where ambient garage temps run cooler in winter, Sanden CO2 holds capacity better but at higher purchase cost. We share the refrigerant and tradeoffs. | R-134a or R-513A is standard; Sanden CO2 holds capacity better at low ambient temps. We share the tradeoff. | Refrigerant doesn't matter; all HPWH are the same. |
| Rheem ProTerra vs A.O. Smith Voltex AL vs Bradford White AeroTherm vs Sanden: how do you decide? | Rheem ProTerra (50/65/80 gal, UEF 3.7-4.0) has the broadest install base and the cheapest upfront. A.O. Smith Voltex AL (50/66/80 gal, UEF 3.45) has the longest service history. Bradford White AeroTherm (50/65/80 gal, UEF 3.39) sells primarily through plumbers (not retail). Stiebel Eltron Accelera 300 (80 gal, UEF 3.05) is European-built with a long history. Sanden CO2 (80 gal, UEF 4.4+) is the most efficient and uses CO2 refrigerant; costs roughly 2x of Rheem. We match the unit to your peak-draw profile and budget; we do not push one brand by default. | Brand depends on peak-draw and budget; we share the comparison and pick with you. | Always Rheem; the others are not worth it. |
| What's the difference between recovery rate and first-hour rating and which matters more? | Recovery rate is gallons per hour the HPWH can heat from cold to setpoint at steady state; FHR includes the stored tank plus recovery in the first hour. For HPWH the recovery rate is roughly half a gas tank's recovery, so a 50 gal HPWH with 25 GPH recovery feels like a smaller tank in heavy back-to-back use. FHR captures the realistic delivery; we use FHR in sizing. For households with simultaneous showers a 65 or 80 gal tank usually delivers the FHR you want. | FHR is the right metric for sizing; recovery alone misses how the tank buffers peak draws. | Recovery is all that matters; tank size is irrelevant. |
| What happens to the gas line when we remove the old water heater? | Per California Plumbing Code, the gas line must be capped at the shutoff valve or further upstream, labeled with the date and 'capped per CPC', and pressure-tested if it remains connected to the meter. If we are removing all gas appliances we can request PG&E gas-meter removal entirely (eliminating the monthly meter charge); the request goes through PG&E and takes 4-8 weeks. We document the gas-line scope on the permit drawings and include the cap-and-label step explicitly. | We cap and label the gas line per CPC; if all gas is gone, we can request PG&E meter removal. | Just cut the line and walk away. |
| What warranty terms apply to the HPWH tank and parts? | Tank warranties on Rheem ProTerra and A.O. Smith Voltex AL run 10 years standard; the heat-pump components run 10 years parts and 1 year labor. Bradford White AeroTherm is similar. Sanden CO2 carries 10 year tank and 6 year heat pump. Installer labor warranty (separate) runs 1-5 years and matters most for any leak-related repair. We list each warranty in the proposal and register on your behalf within the manufacturer's required window. | Each warranty is listed in the proposal; we register on your behalf within the required window. | Warranty is automatic; you don't need to ask. |
| What does commissioning look like and how do I use vacation mode or heat-pump-only mode? | At commissioning we verify the unit is plumbed correctly (inlet, outlet, T&P relief, condensate drain), the 240V or 120V circuit is sized correctly, the unit reaches setpoint and cycles cleanly, and we walk you through the control panel modes: Heat Pump Only (most efficient, slower recovery), Hybrid (HP plus electric resistance backup), Electric Only (resistance only, mostly disabled), and Vacation (low setpoint or off for trips). We leave you a signed commissioning sheet with the mode recommendation. | We commission and walk you through the modes; the signed sheet recommends HP-only for most households. | Just press a button and you're done. |
| Does Ava Community Energy supply choice (Bright Choice default vs Renewable 100 opt-up) change the HPWH cost calculation? | Ava Community Energy (the CCA formerly known as East Bay Community Energy, rebranded October 2023) supplies the generation portion of the Oakland electric bill; PG&E still delivers. The default Bright Choice product is around 62 percent eligible renewable per Ava's 2024 figure and is priced about 0.5 percent below PG&E generation rates; Renewable 100 is 100 percent RPS-eligible renewable at roughly an extra 1.75 cents per kWh above PG&E. The HPWH typically uses 1500-3500 kWh per year depending on household size; opting up from Bright Choice to Renewable 100 adds roughly $25-$60 per year on the supply side at that consumption range. We model both supply options in the post-HPWH bill if you want the comparison. The carbon outcome depends on which product you are on. | Ava supply choice changes the per-kWh rate slightly; we model both if you want the carbon vs cost comparison. | Ava makes HPWH electricity free. |
| Where does the condensate drain go in an Oakland install? | HPWH condensate typically routes by gravity to an existing floor drain, laundry standpipe, or condensate pump to a remote drain. In older Oakland basements without a floor drain we install a condensate pump (Little Giant or similar, around $75-$150) plus tubing to the nearest drain. The drain detail goes in the permit drawings. We do not leave a HPWH with no condensate path. | We route condensate to floor drain, standpipe, or condensate pump; the detail goes on the permit drawings. | Condensate isn't much; it just evaporates. |
| Is HPWH compressor noise a problem in an Oakland Craftsman? | HPWH compressors run around 45-50 dBA at one meter, similar to a quiet refrigerator. In a garage or basement the noise is rarely a problem. If the HPWH must live in a conditioned space adjacent to a bedroom in an older Craftsman with single-wall partitions, the noise can be noticeable; we recommend a buffer wall, a vented utility room, or selecting a quieter model (Sanden CO2 is among the quietest). We share the dBA rating in the proposal. | Compressor noise is around 45-50 dBA; in garage or basement it is rarely an issue. We share the dBA rating. | HPWH is silent; the spec lies. |
| What is the best next step before signing an Oakland HPWH contract? | Schedule a site visit, confirm the install location (garage or basement preferred over conditioned space), confirm electrical capacity (240V or 120V plug-in path), pre-reserve BayREN Home+ on bayren.org, check TECH and HEEHRA waitlist status, and get a written quote with line-item pricing: HPWH unit, electrical work, plumbing work, condensate drain, Oakland P&B permits, commissioning. Compare two or three bids on the same scope and HPWH brand. | Pre-reserve BayREN, check TECH and HEEHRA status, and compare two bids on the same scope before signing. | Sign today; the rebate will expire tomorrow. |
| We have some knob-and-tube wiring in this Craftsman. Does that block the HPWH electrical install? | Knob-and-tube wiring on existing lighting branches does not by itself block a new 240V HPWH circuit. The new circuit runs as its own home-run from the panel directly to the HPWH location, not through any knob-and-tube branch. However, if the panel needs upgrade or replacement to accept the new 240V breaker, the rewiring requirement may surface. We assess at the site visit and itemize any required electrical scope. | K&T on lighting branches does not block HPWH; panel-upgrade requirements may trigger rewiring scope that we itemize. | Knob-and-tube blocks HPWH; you have to rewire first. |
| What charger amperage do you recommend, and why? | We size the charger based on your vehicle, expected daily mileage, panel capacity, and future second-EV plans (typically 32-48A continuous draw on a 40-60A circuit). | — | Always install the biggest charger; bigger is better. |
| Will the charger need a dedicated 240V circuit? | Yes. We run a dedicated 240V circuit sized at 125 percent of the charger's continuous draw, with the correct conductor gauge and conduit per code. | — | Share a circuit with the dryer. |
| How will you confirm my panel has capacity for the charger? | We perform an Article 220 load calculation on site, consider existing loads and planned heat pump or HVAC additions, and explain whether smart load management can avoid a service upgrade. | — | Your panel is fine; no calculation needed. |
| Can smart load management let me add a charger without upgrading the panel? | Often yes. Devices like Span panels or charger-side load-share modules may avoid a service upgrade by throttling the charger when other loads (HVAC, water heater) are active. | — | Load management is unreliable; always upgrade the panel. |
| How would you support a second EV without re-wiring everything later? | We may install a load-sharing charger today, or pre-pull conductors for a second circuit. We document the planned future load in the Article 220 calc. | — | One charger is plenty for any household. |
| How will you handle grounding and bonding for the new circuit? | We verify the service ground meets code, bond the charger neutral and equipment per Article 250, and confirm the GFCI protection (built in or required separately). | — | Grounding is standard; nothing to discuss. |
| Where will the conduit run, and what does it cost to extend? | We walk the routing on site (interior wall vs exterior, attic vs trench), specify conduit fill code requirements, and itemize incremental cost per linear foot. | — | Conduit routing is included; don't worry about it. |
| What labor warranty do you provide on the install, separate from the manufacturer warranty? | We provide a 1-2 year labor warranty on installation; the manufacturer warranty (typically 3-5 years on the charger) is separate. | — | Lifetime warranty on everything. |
| Does the federal §30C credit for EV charging equipment apply to my install? | §30C federal EV-charger credit had a statutory cliff on June 30, 2026 (OBBBA Public Law 119-21). Installations permitted and operational before that date may have qualified in eligible census tracts (low-income community or non-urban) — verify with your contractor and tax preparer. Installations after June 30, 2026 do not qualify. | — | You will receive the federal credit on your taxes. |
| Are PG&E EV charger rebates currently available? | PG&E's residential EV charger rebate program changes periodically; we verify current funding and program rules with PG&E before submitting on your behalf. | — | PG&E always pays out. |
| Will the quote separate confirmed incentives from assumed incentives? | Yes. Each incentive is marked confirmed (with program ID and current funding status) or assumed (subject to verification before contract signing). | — | All listed incentives are yours. |
| What is the warranty on the charger hardware, and what voids it? | The manufacturer typically warrants the charger for 3-5 years; we note that physical damage, surge events without a whole-home surge protector, and tampering may void coverage. | — | Warranty covers everything forever. |
| What is the best next step before signing a contract? | Get a written quote with line-item pricing including conduit footage, panel-capacity verification, an Article 220 load calc, and a clear permit and inspection plan. | — | Sign today to lock in pricing. |
| Should I plan for bidirectional (vehicle-to-home) charging now or later? | We may explain that bidirectional charging requires a charger with V2H or V2G capability plus a compatible EV; we recommend pre-pulling extra conductors only if you have a specific vehicle target. | — | Bidirectional is mandatory; install it now. |
| Which PG&E rate plan are you recommending after the charger install: EV2-A, E-ELEC, or staying on E-TOU-C? | We compare three scenarios using your prior 12 months of PG&E usage: EV2-A (single TOU with EV-specific super-off-peak window midnight-3pm at the lowest rate), E-ELEC (whole-home plan optimized for stacked electrified loads with the March 2026 $24 per month Base Services Charge), and E-TOU-C as the baseline. We share a spreadsheet showing modeled monthly cost on each plan with your charging pattern. The right choice depends on whether HP HVAC, HPWH, or battery are also in scope. | EV2-A typically wins for EV-only households; E-ELEC pulls ahead if other electrified loads are coming. We model both. | EV2-A is always cheapest for any EV owner. |
| What does the City of Oakland Planning and Building electrical permit process look like for a 240V Level 2 EV charger? | We pull an Oakland Planning and Building electrical permit (oaklandca.gov/departments/planning-building) via the Tyler EnerGov self-service portal under our contractor license. The application includes a load-calculation page, circuit specifications, GFCI requirements per current CEC, and the EVSE manufacturer cut sheet. Permit fees are itemized in the proposal. Final card sign-off happens at the inspection visit; Oakland inspection slots have typically run 2-4 weeks from submission. We share copies of all docs with you. | We pull the Oakland P&B permit and share copies; the inspection typically schedules within 2-4 weeks. | EV chargers don't need permits in Oakland. |
| Should I plan around the federal 30C EV-charger credit cliff and how does that affect timing in Oakland? | §30C federal EV-charger credit had a statutory cliff on June 30, 2026 (OBBBA Public Law 119-21). Installations placed in service after June 30, 2026 are not eligible. The credit also required the address to be in an eligible census tract; many flatland Oakland addresses (West Oakland, parts of East Oakland) sat in eligible tracts while many Oakland Hills addresses did not. For pre-cliff installs that may have qualified, we verified the census-tract status on the IRS / Treasury Section 30C eligibility lookup before listing the credit, and we listed the placed-in-service deadline plainly. We do not assume eligibility for any install — verify with your tax preparer. | §30C had a sunset on June 30, 2026 and required census-tract eligibility; pre-cliff installs may have qualified — we verify before listing it as a deduction. Post-cliff installs do not qualify. | Just put the credit in the quote; the IRS won't check. |
| Does Ava Community Energy offer any EV-specific programs or rebates I should ask about? | Ava Community Energy (the CCA formerly known as East Bay Community Energy, rebranded October 2023) administers some EV-related programs in Alameda County including time-of-use education and periodic incentives; specific cash rebates on home EVSE installs are not consistently available. We check the current avaenergy.org program list before quoting and only list any program as a confirmed line item after the reservation is confirmed. We do not assume an Ava rebate is in play. | We check avaenergy.org for current EV-program status and only list a program once the reservation is confirmed. | Ava has a $1,000 EV charger rebate; we'll deduct it. |
| How does NEC 625 continuous-load sizing work for the EV-charger circuit? | NEC Article 625 governs EVSE installations. The continuous-load rule (NEC 625.41) sizes the branch circuit at 125 percent of the EVSE rated current. A 40A EVSE needs a 50A circuit and #6 copper conductor on most layouts; a 48A EVSE needs a 60A circuit and #4 copper. We confirm wire gauge, breaker size, conduit fill, and ground-fault protection (GFCI vs charger-internal CCID) on the permit drawings. We do not undersize the conductor to save cost. | NEC 625.41 requires 125 percent continuous-load sizing; we list the wire gauge and breaker on the permit drawings. | A 40A charger goes on a 40A breaker; that's fine. |
| Can my existing 100A or 125A panel actually handle a Level 2 charger after the load calc? | We run NEC Article 220 standard or optional method load calc with all existing loads (lighting, HVAC, water heater, range, dryer) plus the new EVSE at its continuous-load rating. Many older East Bay homes with 100A panels run 60-85 amps of calculated demand; adding a 40A EVSE at 125 percent (50A continuous) requires either a service upgrade or a load-management device. We share the load-calc worksheet. We do not skip this step. | We share the NEC 220 load calc; older 100A panels often need load management or upgrade before EVSE install. | 100A panels can always handle a 40A EV charger. |
| If my panel is at capacity, is a load-management device cheaper than upgrading the panel? | Load-management devices (DCC-9, NeoCharge, Wallbox Power Boost, ChargePoint Home Flex with Power Management) can let an EVSE share an existing circuit by throttling EV charge current when other loads are active. Typical install cost runs $300-$900 plus labor. A panel upgrade in Oakland usually runs $4,500-$9,000 with permit and PG&E coordination. If the heat pump or HPWH is also planned, the panel upgrade is usually the right call now to avoid a second cycle. We model both with your plan and share the math. | Load management is cheaper short-term; panel upgrade is usually the right call if other electrified loads are coming. | Always upgrade the panel; load management is unreliable. |
| Which smart EVSE brands work well with off-peak scheduling and Ava / PG&E demand-response? | Wallbox Pulsar Plus, ChargePoint Home Flex, Tesla Universal Wall Connector, and Emporia EVSE all offer WiFi scheduling and integration with utility off-peak rates. Wallbox supports OCPP for utility programs; ChargePoint connects to ChargePoint network for demand-response participation; Tesla scheduling is via the car. We match the EVSE to your car and your rate plan rather than pushing one brand. We do not assume Tesla-only for non-Tesla households. | We match the EVSE feature set to your car and rate plan; off-peak scheduling matters more than brand. | Just buy whatever; smart charging doesn't matter. |
| Should the EVSE be plug-in NEMA 14-50 or hardwired and what is the code difference? | NEMA 14-50 outlets require GFCI protection (NEC 625.44(A) requires personnel-protection level GFCI on receptacle installations); the EVSE plugs in and can be moved. Hardwired EVSE installations can use the manufacturer's internal CCID for ground-fault detection and skip the external GFCI breaker; the install is permanent. Hardwired typically runs $50-$150 cheaper on hardware. For garage installs we usually hardwire for reliability; for portable use a 14-50 outlet has flexibility. We list both options and the price difference. | Hardwired is cleaner and slightly cheaper; 14-50 adds flexibility. We list both with price. | Always do 14-50; it's the only way. |
| If the panel is far from the garage, will the voltage drop on the long run be a problem? | NEC recommends voltage drop under 3 percent on branch circuits. For a 50A EVSE circuit over 50-100 feet of run, the typical #6 copper conductor can drop into marginal territory; #4 copper or even #2 may be required on long runs from an old East Bay basement panel to a detached garage. We calculate voltage drop on the actual run length, document the conductor size in the proposal, and do not undersize to save copper cost. | We calculate voltage drop on the run length and size the conductor accordingly. | Voltage drop doesn't matter; the EVSE compensates. |
| If we add solar and battery later, will the EVSE install need to change to comply with NEC 705.12? | NEC 705.12 (the 120 percent rule) governs how much inverter output a panel busbar can accept. A future solar plus battery install at 7.6 kW continuous (around 31A) plus a 200A main breaker leaves 209A of busbar capacity (200 x 1.2 = 240A allowed); the new EVSE plus future PV must fit within that budget. We document the future-load assumption now so the EVSE install does not have to be redone if solar comes later. We oversize the conduit run when reasonable to make future additions easier. | We document a future solar plus battery assumption now and oversize conduit where reasonable. | Worry about solar later; the EVSE doesn't care. |
| If the EVSE is outdoor-mounted, what GFCI and weatherproof requirements apply in Oakland? | Outdoor EVSE installations require weatherproof enclosure rating (NEMA 3R minimum, NEMA 4 preferred near coastal Oakland salt air), in-use cover for any receptacle, and GFCI protection per NEC 625.44. Oakland's wet winter season makes weatherproof gland fittings and conduit drips standard. We list the enclosure rating, GFCI device, and conduit-sealing detail in the permit drawings. | Outdoor EVSE needs NEMA 3R or 4 enclosure and GFCI per NEC 625.44; we detail it in the permit. | Outdoor is fine; just bolt it to the wall. |
| We have knob-and-tube wiring in parts of the house. Does the EVSE install force a rewire? | Knob-and-tube wiring is common in older Oakland Craftsman and bungalow homes. Oakland Planning and Building generally allows a new dedicated circuit for an EVSE without rewiring the rest of the house, provided the new circuit ties into the panel, not an existing knob-and-tube branch. However, if the main panel needs upgrade or replacement to accept the new circuit, the rewire may become required for the rest of the house. We assess at the site visit and itemize any required rewiring scope. | Knob-and-tube assessment happens at the site visit; new EVSE circuits usually tie into the panel directly, not into K&T branches. | Knob-and-tube doesn't block EV chargers; never thought about it. |
| What does the Oakland permit fee actually cost and how is it shown in the proposal? | Oakland P&B residential electrical permit fees for a single EVSE circuit typically run $200-$450 depending on the work valuation and any plan-check requirements. We itemize the fee as its own line item in the proposal, separate from labor, plus any inspection fee and plan-check fee. We do not bundle the permit fee into a flat labor rate. We share the receipt after submission. | Oakland permit fee is itemized; we share the receipt after submission. | Permit fee is included in labor; you don't need a breakdown. |
| Do you need to be a manufacturer-certified installer for the warranty to be valid? | Tesla Wall Connector and ChargePoint Home Flex do not require certified-installer status for warranty validity. Wallbox warranties on commercial units sometimes require Wallbox-certified installer; the Pulsar Plus residential unit does not. We confirm the manufacturer's warranty conditions for the model in your proposal and register the warranty on your behalf within the required window. | We confirm warranty conditions per model and register on your behalf within the required window. | Warranty is automatic; the manufacturer doesn't care. |
| If we add a battery later for PSPS resilience, will the EVSE need to coordinate with it? | Tesla Powerwall 3 and Enphase IQ Battery 5P both support EVSE coordination through their respective home-energy-management apps; the EVSE can throttle during outages to preserve battery runtime for critical loads. We confirm whether your planned EVSE supports OCPP or manufacturer integration with your future battery brand. If you are Tesla-bound (Powerwall plus Tesla car), the Tesla Wall Connector integrates cleanly; if you are mixed-brand we plan accordingly. We document the future-battery assumption now. | EVSE-battery coordination depends on brand; we confirm OCPP or manufacturer integration in the proposal. | EVSE doesn't talk to batteries; they're independent. |
| Is WiFi or OCPP connectivity worth it for an EVSE in Oakland? | WiFi connectivity unlocks off-peak scheduling on the EV2-A or E-ELEC midnight-3pm super-off-peak window without manually plugging in at midnight. OCPP (Open Charge Point Protocol) lets the EVSE participate in utility demand-response programs if PG&E or Ava Community Energy offers them. The cost difference between non-WiFi and WiFi-capable EVSE is small (often $50-$150); for the off-peak scheduling alone the payback is usually within a year. We recommend WiFi-capable unless your garage has no signal. | WiFi enables off-peak scheduling and payback is usually fast; we recommend WiFi-capable unless signal is poor. | WiFi is a gimmick; just plug it in at night. |
| Our flatland Oakland house has no driveway and only street parking. What options exist? | We assess three paths: curbside conduit run to a NEMA 14-50 outlet near the property line (subject to Oakland P&B plus PG&E plus an encroachment review), a relocatable EVSE on a detached garage if applicable, or Level 1 plus neighborhood DC fast-charging as a viable interim. We do not promise a particular curbside outcome before Oakland confirms what your property allows; some block configurations do not permit curbside conduit. We share what we find from the site visit honestly. | We do a site visit and confirm with Oakland P&B whether a permit-compliant install is feasible; not every flatland block can do curbside. | Just run a cord across the sidewalk; Oakland doesn't enforce. |
| If a PG&E PSPS event hits, can I still charge from the battery or do I lose EV access? | During a PSPS event the EVSE loses utility power. If you have a home battery configured for whole-home or partial backup, you can charge the EV from the battery; runtime depends on battery kWh capacity and EV draw. A 13.5 kWh Powerwall covers about 1 hour of full-rate 11.5 kW charging plus essential loads. We size the battery and configure backup-loads with the expected outage duration and EV-charge needs together; we do not assume the EV will be a backup-load priority over fridge, lights, and Wi-Fi. | EV-from-battery charging during PSPS is possible but constrained; sizing depends on the battery and outage duration assumption. | Just don't charge during PSPS; nobody does that. |
| Does PG&E need to be notified before the EVSE goes in, separate from the permit? | PG&E does not require pre-notification for a residential Level 2 EVSE under typical service capacity, but the rate-plan switch (EV2-A or E-ELEC) is a customer-initiated action through your PG&E.com account and typically takes 1-2 billing cycles to take effect. If a panel or service upgrade is part of the work, PG&E coordination is required (service drop, meter relocation, service-entrance changes); we manage that filing and document the projected schedule. We do not assume PG&E will turn the new service same-day. | Rate-plan switches are customer-initiated through PG&E.com; service-side work requires PG&E coordination on the schedule. | PG&E doesn't need to know; just install and start charging. |
| How will you size the solar array for our future electric load (heat pump HVAC, EV, water heater)? | We model expected future usage including planned heat pump, EV miles, and water heater, then size the array to offset that load under NEM 3.0 export economics. | — | We size the system from last year's utility bill only. |
| How does NEM 3.0 change the economics versus older interconnections? | NEM 3.0 cut export compensation by ~75 percent versus NEM 2.0, which makes battery storage important for self-consumption. We model expected savings under NEM 3.0 specifically. | — | NEM 3.0 is the same as NEM 2.0 economically. |
| Is my roof suitable for solar, and what is its remaining lifetime? | We inspect the roof condition, slope, orientation, and shade pattern; we recommend roof replacement first if the roof is near end of life. | — | Any roof works. |
| Which panel and inverter brands do you recommend, and why? | We name the specific panel model (wattage, efficiency, temperature coefficient, degradation curve) and inverter brand (string vs microinverter), explain the tradeoffs for our roof, and provide the manufacturer datasheets. | — | We use whatever is cheapest in stock this month. |
| Will the array use string inverters, microinverters, or DC optimizers, and why? | We choose based on roof shading patterns and orientation: microinverters or optimizers for shaded or multi-orientation roofs, string inverters for unshaded uniform arrays. We explain the cost and monitoring tradeoff. | — | Microinverters are always best. |
| What does the shade analysis show for our roof across the year? | We run a shade analysis tool (HelioScope, Aurora, or similar) using a site survey and roof imagery, and we share the annual production estimate per panel with shade losses called out. | — | Shade is not significant. |
| Do you offer a production guarantee, and how is it enforced? | We offer an annual production guarantee in kWh based on the design model, and we explain the remediation path (true-up payment or system correction) if actual production falls below the threshold. | — | Production guarantees are a marketing gimmick. |
| What monitoring platform comes with the system, and are there subscription fees? | We name the monitoring platform (Enphase Enlighten, SolarEdge mySolarEdge, or similar), describe what data is visible per panel or per string, and disclose any optional or recurring fees. | — | Monitoring is included; do not worry about the details. |
| If we add a battery later, can we still apply for SGIP at that time? | Yes — SGIP applications are tied to the battery install, not the solar install. As of 2026, only the AB 209-funded RSSE (Residential Solar and Storage Equity) tier remains open to new applications, and that budget is fully reserved with new apps on a waitlist served via attrition; ratepayer-funded General Market / Equity / Equity Resiliency budgets are no longer accepting new applications. We verify current SGIP budget status at selfgenca.com when the battery is added and explain that pre-approval is required before equipment is delivered. | — | SGIP only counts if solar and battery are installed together. |
| Does the federal Section 25D residential clean energy credit apply to my installation? | Section 25D expired December 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21). Installations completed in 2026 or later do not qualify for the 30 percent §25D credit. | — | You will receive the 30 percent federal credit on your taxes. |
| Does TECH Clean California currently offer a solar incentive? | TECH Clean California primarily targets heat pump HVAC and heat pump water heaters, not standalone solar. We verify current TECH program scope at techcleanca.com before citing any incentive. | — | TECH covers solar; assume the rebate applies. |
| Are BayREN Home+ rebates available for our solar or solar plus battery project? | BayREN Home+ is primarily a building shell and heat-pump program for Bay Area homeowners; we verify whether a solar or battery incentive is currently active at bayren.org and explain the application path if so. | — | BayREN always pays out for solar. |
| Who handles the PG&E interconnection paperwork, and what is the typical timeline? | We submit the PG&E interconnection application on your behalf, file the city permits, and coordinate Permission to Operate (PTO). Typical PG&E PTO timelines range from 2 to 6 weeks after the city sign-off; we document the expected window in the quote. | — | Interconnection happens automatically. |
| What is your post-install commissioning checklist? | Commissioning includes verifying each panel reports correctly in the monitoring platform, checking inverter firmware, confirming production matches the design model on a clear day, and walking us through reading the monitoring app. | — | We turn it on and leave. |
| How will you confirm the roof structure supports the array? | We perform a structural assessment including rafter sizing, spacing, and condition; for older or unusual roofs we may engage a licensed structural engineer to provide a letter for the permit submittal. | — | Roofs always handle solar. |
| How will the array meet California fire-setback rules? | We design the array to meet the California Residential Code fire access pathway requirements: ridge setbacks, hip-to-eave pathways, and emergency egress clearances, and we document compliance in the permit submittal. | — | Fire setbacks are optional. |
| What ongoing maintenance does the system need? | Typical maintenance is light: annual visual inspection, occasional rinse if local dust or pollen reduces production, and inverter firmware updates pushed by the manufacturer. We explain the warranty implications of skipping recommended maintenance. | — | Solar is install-and-forget; no maintenance ever. |
| What warranties cover the panels, inverter, and labor? | Panels typically carry a 25 year product warranty plus a 25 year linear production warranty; inverters carry 10 to 12 years standard (extendable); we provide a 5 to 10 year labor warranty separately. We document what voids each. | — | Lifetime warranty on everything. |
| What is the best next step before signing a solar contract? | Get a written quote with line-item pricing including the design model output (kWh per year), shade analysis, panel and inverter make and model, permit and PG&E interconnection fees, production guarantee terms, and warranty terms. | — | Sign today to lock in pricing before incentives change. |
| How do you model production for an Oakland address given the difference between the Hills and the flatlands? | We use PVsyst or HelioScope with NREL TMY3 data for the nearest Oakland station, then apply a neighborhood-microclimate derate. Oakland Hills (Montclair, Skyline) typically gets less morning marine layer than flatland Oakland (Lake Merritt, West Oakland) and runs 3-7 percent higher annual production for an equivalent roof. We share the 12-month production model with monthly breakdown. We do not promise specific kWh production; we share the model assumptions. | We model production per neighborhood; Oakland Hills typically runs 3-7 percent higher than flatland for equivalent roofs. | Oakland production is the same everywhere; just use the average. |
| How does NEM 3.0 (Net Billing Tariff) affect the export economics for an Oakland rooftop on PG&E? | NEM 3.0 took effect April 15, 2023 for new PG&E interconnections. Export compensation runs roughly 75 percent lower than NEM 2.0 and varies hourly by the CPUC Avoided Cost Calculator (ACC) rate schedule. A solar-only system with limited self-consumption usually performs poorly on payback under NEM 3.0. We model the year-1 cost with and without battery so the self-consumption difference is visible. We share the ACC hourly schedule we used. | NEM 3.0 makes battery storage important for payback; we model both options. | NEM 3.0 is fine; you'll still net to zero on your bill. |
| How do solar permits work with City of Oakland Planning and Building? | We pull an Oakland Planning and Building electrical permit (oaklandca.gov/departments/planning-building, via the Tyler EnerGov self-service portal) plus a structural review if the array sits on an older Craftsman or bungalow roof. Oakland participates in SolarAPP+ for streamlined permitting on standard residential designs; we use it when eligible. PTO (permission to operate) from PG&E typically takes 2-6 weeks after final inspection. We share all permit applications and inspection cards. | We use SolarAPP+ when eligible; otherwise standard Oakland P&B plan check applies. | Solar permits in Oakland are same-day; no review needed. |
| Is the federal 25D residential clean energy credit on the table for an Oakland install? | The federal Residential Clean Energy Credit (Section 25D) expired December 31, 2025 under the One Big Beautiful Bill Act (OBBBA, PL 119-21). Installations placed in service in 2026 or later are not eligible for §25D. We list the credit as expired in the proposal and do not deduct it from your project cost. If the system was placed in service on or before December 31, 2025 the credit may apply; we document the placed-in-service date. | 25D expired on December 31, 2025 under OBBBA; we do not deduct it for 2026 installs. | 25D still applies; we deduct 30 percent from the quote. |
| What monitoring platform comes with the install and what data do I actually see? | Enphase systems use the Enlighten platform with per-microinverter data; SolarEdge uses the SolarEdge monitoring platform with per-optimizer data; Tesla solar uses the Tesla app. All show daily / monthly / annual production and faults. We commission monitoring at install and walk you through the dashboard. We do not consider commissioning complete until you can see live data on your phone. | Monitoring is commissioned at install and we walk you through the dashboard. | Monitoring is included; you'll figure it out. |
| Microinverter (Enphase IQ8) or string inverter (SolarEdge)? Which fits an Oakland roof better? | Oakland roofs with shading from neighbor trees, redwoods, or chimney shadows benefit from microinverters (Enphase IQ8) because each panel operates independently of shaded neighbors. Clean unshaded roofs can use either; string inverters (SolarEdge) have a longer service history and slightly lower install cost. We run the shading analysis (HelioScope, Aurora) and pick the right topology. We do not push one technology by default. | Shading drives the choice; we share the shading analysis and pick the right topology. | Always go microinverter; it's the only good choice. |
| Our Craftsman has a 25-year-old composition roof. Should we re-roof before solar? | Composition roofs over 20-25 years typically have 5-10 years of remaining life. Removing and reinstalling a solar array adds roughly $2,000-$5,000 in labor on top of the re-roof. The cost-rational path is usually to re-roof first if the roof is past 20 years, especially in Oakland where rain and salt-air exposure shorten composition shingle life. We assess at the site visit and share the math; we do not push solar onto a roof that needs replacement. | Re-roof first if the composition is over 20 years old; we share the cost math at the site visit. | Solar adds 25 years to your roof life; install now. |
| Older Craftsman rafters look thin to me. Do we need a structural engineer? | Many older East Bay Craftsman and bungalow homes have 2x4 or 2x6 rafters at 24-inch spacing, which is at the low end of the structural envelope for additional dead and wind load from a PV array. Oakland P&B often requires a stamped structural letter or engineered tie-down design for older homes. We engage a licensed structural engineer when the rafter geometry calls for it; the cost runs $400-$900 and the letter is part of the permit submittal. We do not skip structural review on older homes. | Older Craftsman rafters often need structural review; we engage a licensed engineer when required. | Skip structural; the panels are light. |
| Are there fire-access setbacks on a residential solar array in Oakland? | California Residential Code Chapter R331 (formerly R327 in older code references) requires roof-access pathways for firefighters: typically 3 feet of clear space at the ridge and along setbacks from roof edges. For Oakland Hills addresses in the Very High Fire Hazard Severity Zone, CRC R337 also applies with additional class-A roof requirements. We document the setbacks on the permit drawings and confirm Oakland P&B sign-off. We do not size the array up to the eaves. | Fire-access setbacks (3-foot ridge + edge) are mandatory; Hills addresses also follow CRC R337 for materials. | Setbacks don't matter; cover the whole roof. |
| What warranties cover the panels, the inverter, and the labor in Oakland? | Tier-1 panel warranties (LG Energy Solution, REC, Q CELLS, Panasonic) run 25 years on product and power output (typically 84-92 percent retained capacity at year 25). Microinverter warranties (Enphase IQ8) run 25 years; string inverter (SolarEdge) runs 12 years extendable. Labor warranties from the installer run 5-10 years and are the most important one to scrutinize because it covers roof penetrations. We list each warranty term in the proposal. | Each warranty is listed in the proposal; the installer's labor warranty matters most for roof penetrations. | Warranty is automatic; you don't need to ask. |
| Oakland has a lot of mature trees and redwoods. How do you handle shading in the production model? | We use HelioScope or Aurora 3D shading models with imported LiDAR (sometimes drone imagery) for the roof and surrounding tree canopy. Mature redwoods in Oakland neighborhoods (Rockridge, Temescal, Piedmont border) can shade significant roof area. The model produces a per-month shading impact; we share it. We do not exclude shaded areas from the proposal without showing the math. | We share the 3D shading model and per-month impact; mature trees materially change the production estimate. | Trees aren't a big deal; we just lay out around them. |
| Does coastal salt air or pollen and dust derate Oakland panel output? | Soiling derate on Oakland panels typically runs 1-3 percent annually under normal rainfall. Bay-adjacent addresses (West Oakland, Jack London) get a small salt-air component. Inland Oakland mainly accumulates pollen and dust between rain events. We apply a 2 percent soiling assumption in PVsyst unless your site warrants more. We do not recommend annual professional cleaning unless the array sits on a particularly soiled location. | We apply a 2 percent soiling derate by default; professional cleaning is rarely needed in Oakland. | Clean panels every six months or output crashes. |
| What is the PG&E interconnection process and what fees apply? | We submit the PG&E interconnection application (the Net Billing Tariff agreement under NEM 3.0) once the permit is in plan check. PG&E typically takes 2-4 weeks to issue conditional approval, then PTO follows the final inspection by 2-6 weeks. PG&E charges a $145 interconnection application fee on residential NEM 3.0 systems as of last verification; we itemize it. We do not energize before PTO. | PG&E interconnection takes 2-4 weeks for conditional approval; PTO follows the final inspection. The fee is itemized. | PTO is automatic and instant; just flip the switch. |
| We plan to add a heat pump and HPWH later. Should the solar size now account for that future load? | Yes. Sizing solar today to meet only current usage strands future load on the grid at NEM 3.0 export rates. We model expected future load (Manual J for HP HVAC, HPWH first-hour rating, EV-charge needs) and size solar to cover the full expected post-electrification annual kWh, within roof and structural limits. We share the sizing rationale and the post-electrification cost model. | We model expected post-electrification load now and size solar accordingly within roof limits. | Just size to current usage; we'll add more later. |
| What does NEC 690 and the 705.12 120 percent rule mean for an Oakland panel? | NEC Article 690 covers PV systems and Article 705 covers interconnection. The 705.12(B)(3)(2) 120 percent rule says the sum of main breaker + inverter output breaker cannot exceed 120 percent of busbar rating. A 200A panel allows up to 240A of combined; a 200A main + 40A solar breaker fits (200 + 40 = 240). Larger inverters require derating the main breaker, a line-side tap, or a panel upgrade. We confirm the busbar rating and document the math in the permit drawings. | We confirm the panel busbar rating and document the 705.12 math in the permit drawings. | The 120 percent rule doesn't apply to most homes. |
| Does BayREN Home+ rebate solar in Oakland? | BayREN Home+ primarily covers heat-pump HVAC, HPWH, and envelope retrofits; solar is not a direct BayREN Home+ rebate category as of last verification. If solar plus battery is bundled with a HP HVAC swap, the HP rebate may apply to that component. We confirm the current bayren.org program list before quoting and do not list a solar-rebate line item unless one is actually open. | BayREN does not directly rebate solar; we confirm the current program list before quoting. | BayREN pays $5,000 for solar. |
| What is the best next step before signing an Oakland solar contract? | Schedule the site visit, get the PVsyst or HelioScope production model with neighborhood-microclimate derate and shading analysis, confirm SolarAPP+ eligibility through Oakland P&B, decide on the NEM 3.0 self-consumption strategy (solar-only vs solar plus battery with SGIP), and get a written quote with all line items: panels, inverter, racking, labor, permits, structural review, monitoring. Compare two or three bids on the same scope. | Compare two or three bids on the same scope before signing. | Sign today; prices are going up. |
| Our Oakland Hills address is in the Very High FHSZ. Does the solar install change because of fire rules? | Oakland Hills addresses in the CAL FIRE Very High Fire Hazard Severity Zone fall under CRC R337 for wildfire-resistant construction. The PV array itself does not change, but adjacent roofing materials must be Class A fire-rated, conduit penetrations must use fire-rated boots and sealant, and combiner boxes near eaves need ignition-resistant placement. We document the FHSZ designation, the Class A roof confirmation, and any required R337 hardware in the permit drawings. | Hills addresses follow CRC R337; we document Class A roof confirmation and fire-rated hardware on the permit. | Fire rules don't change solar installs. |
| We still have some knob-and-tube wiring. Will that block the solar interconnection? | Knob-and-tube wiring on lighting branches does not by itself block a solar interconnection; the solar feeder runs into the main panel busbar, not into knob-and-tube branches. However, if the panel needs upgrade or replacement to accept the inverter output breaker, the rewiring requirement may surface. We assess at the site visit and itemize any required electrical scope alongside the solar work so you do not see a surprise change order after permitting. | K&T on lighting branches does not block solar; panel-upgrade requirements may trigger rewiring scope that we itemize upfront. | Knob-and-tube blocks all solar; you have to rewire first. |
| We are an Ava Community Energy customer. Does the solar interconnection go through Ava or PG&E? | Interconnection goes through PG&E because PG&E owns the meter and the distribution lines. The Net Billing Tariff (NEM 3.0) export compensation flows back through PG&E's billing as a generation credit; if you are on an Ava supply product (Bright Choice default or Renewable 100 opt-up), the export credit applies against the PG&E delivery portion of the bill and the Ava-supplied generation portion separately. Ava Community Energy (the CCA formerly known as East Bay Community Energy, rebranded October 2023) publishes its own NBT-equivalent compensation schedule; we model the actual Ava numbers, not the PG&E bundled-rate numbers, for the payback calc. | Interconnection is via PG&E; export credits split between PG&E delivery and Ava supply. We model Ava's actual NBT numbers. | Ava customers get a separate solar deal. |
| Which circuits will be backed up during an outage, and for how long? | We provide a backup-loads list (refrigerator, internet, lights, HVAC controls, well pump if any), estimate runtime in hours at typical and worst-case usage, and explain whether whole-home or essential-loads backup is recommended. | — | The battery powers the house. |
| Does my install qualify for SGIP (Self-Generation Incentive Program), and at what tier? | We verify current SGIP budget status before quoting: as of December 31, 2025 the ratepayer-funded General Market, Equity, and Equity Resiliency budgets are closed to new applications, and only the AB 209-funded RSSE (Residential Solar and Storage Equity) tier remains open — and that budget is fully reserved with new applications served via an attrition-based waitlist (selfgenca.com). We document the waitlist position rather than promising a rebate, and we explain that pre-approval is required before equipment is delivered. | — | SGIP always pays out the maximum amount. |
| What is the battery's usable kWh and continuous inverter power, and how do they relate? | We specify both: kWh determines how long the backup lasts; the inverter's continuous AC output determines what can run at once (refrigerator + lights + maybe HVAC vs everything). | — | kWh is the only number that matters. |
| Is the battery AC-coupled or DC-coupled with the solar array, and why? | AC-coupled batteries use a separate inverter and are easier to retrofit to existing solar. DC-coupled batteries share an inverter with new solar and are typically more efficient end-to-end. We choose based on whether the solar array is new or existing. | — | Coupling does not matter. |
| Can we add more battery capacity later, and what are the limits? | Most modern systems support stacking additional units up to a vendor-specified maximum. We document the maximum stack today, what is needed to add capacity later (matching firmware, software update, possible electrical re-work), and whether SGIP can be applied to expansion units. | — | Buy the biggest battery today; expansion is impossible. |
| What depth-of-discharge limit does the battery use, and how does that affect usable kWh? | We explain the nameplate kWh vs usable kWh: modern LFP batteries reserve very little for cycle life (often 95 to 100 percent of nameplate is usable); older chemistries reserve 10 to 20 percent. We quote usable kWh in the proposal so you can compare like-for-like. | — | Nameplate kWh is the usable kWh. |
| What is the manufacturer warranty on the battery, and what limits it? | Most residential batteries carry a 10 to 12 year warranty, often paired with a cycle count (e.g. 6,000 to 10,000 cycles) or throughput limit (e.g. 37.8 MWh) - whichever comes first. We provide the spec sheet and explain what voids coverage. | — | Lifetime warranty; no fine print. |
| Are time-of-use arbitrage cycles counted against the warranty? | Yes. Every charge-discharge cycle counts toward the throughput limit; aggressive daily TOU arbitrage may shorten the years-based warranty window. We model expected cycles per year for your usage pattern. | — | Cycling does not count against the warranty. |
| How will the battery shift load away from PG&E peak hours? | We program the battery to charge from solar during midday and discharge during the PG&E EV2-A or E-ELEC peak window (typically 4-9pm), saving you the peak-period delta. We tune the schedule for your actual usage and rate plan. | — | The battery charges and discharges whenever. |
| How does NEM 3.0 change the battery payback? | Under NEM 3.0, export compensation dropped by roughly 75 percent, so self-consumption (using your solar via the battery instead of exporting) is now the primary battery economic driver. We model expected savings under NEM 3.0 with your specific rate plan. | — | NEM 3.0 has no effect on battery payback. |
| How will the install meet CRC 1207 / R327 fire-setback rules for energy storage? | We design the install per California Residential Code R327 (formerly section 1207): separation from windows, doors, openings into the dwelling, and other batteries; smoke and heat detectors per code; and an exterior wall location where possible. We document compliance in the permit submittal. | — | Fire setbacks are optional. |
| What is your post-install commissioning checklist? | Commissioning includes verifying battery state-of-charge reporting, testing backup-mode transfer with a simulated outage, walking through the app for backup-only vs TOU modes, and confirming the SGIP system performance metering is functioning if SGIP is part of the project. | — | We turn it on and leave. |
| Are you an installer certified by the battery manufacturer? | Yes. We provide our certification number for the specific battery brand (Tesla Powerwall, Enphase IQ, LG Chem RESU, FranklinWH, etc.); certification is typically required to preserve full warranty coverage. | — | Certification does not matter for batteries. |
| Who handles the PG&E interconnection update for the new battery? | We submit the updated PG&E interconnection paperwork to add the battery to your existing or new solar interconnection, and we obtain the updated Permission to Operate before energizing. | — | PG&E interconnection happens automatically. |
| What panel-side breaker work or interconnection method does the battery require? | We confirm whether the battery interconnects via a back-fed breaker (with sum-of-breakers check per NEC 705.12), a supply-side tap, or a dedicated battery sub-panel; we show the calculation on the permit drawings. | — | Any spare slot will work. |
| Does the federal Section 25D residential clean energy credit apply to my battery install? | Section 25D expired December 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21). Battery installations completed in 2026 or later do not qualify for the 30 percent §25D credit. | — | You will receive the 30 percent federal credit on your taxes. |
| Does HEEHRA or TECH Clean California currently offer a battery incentive? | Neither HEEHRA nor TECH primarily fund residential batteries; SGIP is the main California battery program. We verify current TECH scope at techcleanca.com and HEEHRA status at energy.ca.gov before citing any battery incentive. | — | HEEHRA covers batteries automatically. |
| Will the quote separate confirmed SGIP incentives from assumed? | Yes. SGIP is marked confirmed only after pre-approval is granted and the funding tier is reserved; we mark the line as assumed in the quote until then and explain the reservation status. | — | All listed incentives are yours. |
| What is the best next step before signing a battery contract? | Get a written quote with line-item pricing including usable kWh, continuous AC inverter output, AC vs DC coupling, manufacturer warranty terms (years AND cycles AND throughput), labor warranty separately, SJPermits.org permit fees, PG&E interconnection plan, and an honest SGIP workflow: as of December 31, 2025 only the AB 209-funded RSSE budget accepts new applications and it is fully reserved (attrition-based waitlist via selfgenca.com), so the proposal documents the waitlist position rather than promising a rebate. | — | Sign today to lock in SGIP before funding runs out. |
| How does SGIP apply for a residential battery in Oakland (PG&E territory) and which tiers are available? | SGIP in PG&E territory is administered by PG&E. Budget status as of 2026: per the SGIP program administrators, the ratepayer-funded Residential General (around $150 per kWh of usable capacity), Equity (around $850 per kWh for income-qualified customers), and Equity Resiliency (around $1,000 per kWh for HFTD-designated or Medical Baseline customers) budgets are no longer accepting new applications. Only the AB 209-funded RSSE (Residential Solar and Storage Equity) tier remains open — and that budget is fully reserved as of December 31, 2025; new RSSE applications go to a waitlist served through attrition of cancelled projects. RSSE rates were around $1,100 per kWh storage plus around $3,100 per kW solar, targeted at income-qualified solar-plus-battery customers. Pre-approval is required before installation; we verify current budget status at selfgenca.com before quoting, reserve via PG&E when the path is open, and document the reservation number (or waitlist position) in the proposal. We confirm only what we have reserved; we do not assume eligibility. | We verify current SGIP budget status; only RSSE remains open to new apps in 2026 and that budget is on a waitlist via attrition. We document the waitlist position rather than promising a rebate. | Sign and we will get whatever SGIP shows up. |
| We are in the Oakland Hills marked as Very High Fire Hazard Severity Zone. Does the SGIP Equity Resiliency tier apply? | SGIP Equity Resiliency was designed for customers in high-fire-threat districts (per CPUC HFTD map) and on the Medical Baseline program. Many Oakland Hills addresses (Montclair, Skyline, Joaquin Miller, Piedmont border) fall in HFTD Tier 2 or Tier 3. As of 2026 the ratepayer-funded Equity Resiliency budget is no longer accepting new applications — only the AB 209-funded RSSE (Residential Solar and Storage Equity) tier remains open, and that budget is fully reserved with new applications on a waitlist via attrition. We verify the HFTD designation against the CPUC fire-threat map and walk through eligibility honestly before listing any SGIP line item, but practical access in 2026 is limited to the RSSE waitlist for income-qualified solar-plus-battery projects. Approval is not automatic; we list any SGIP path as pending until confirmed via selfgenca.com. | Equity Resiliency depends on HFTD designation plus other criteria; we verify before claiming the tier. | Equity Resiliency is automatic in Oakland Hills; you qualify. |
| How does adding a battery improve solar payback under NEM 3.0 on PG&E? | Under NEM 3.0, exporting solar to the grid pays roughly 75 percent less than under NEM 2.0. A battery stores midday solar for use during the 4-9pm peak window, which is the highest-rate window on PG&E E-ELEC and EV2-A. We model self-consumption ratio (typically 60-80 percent with battery vs 30-50 percent solar-only) and share the year-1 cost comparison. We do not promise a payback number; we share the model assumptions and outputs. | Battery improves payback under NEM 3.0; we model both options and share the difference. | Adding a battery always cuts your bill in half. |
| What does the Oakland Planning and Building permit process look like for a battery install? | We pull an Oakland P&B electrical permit (oaklandca.gov/departments/planning-building, via the Tyler EnerGov self-service portal). For wall-mounted batteries we confirm structural attachment per the manufacturer install manual; for floor-mounted (Tesla Powerwall 3 or FranklinWH) the floor anchor pattern goes in the permit drawings. Fire setback per CRC R331 (and R337 in the Hills FHSZ) is documented with measurements on the permit. Final card sign-off happens at inspection. We share all permit copies. Oakland review timelines run longer than SJ; we set expectations honestly. | Oakland P&B permits required; we share copies on submission and document the fire setback on the permit drawings. | Batteries under 20 kWh don't need permits. |
| Does the federal 25D credit apply to the battery in 2026? | The federal Residential Clean Energy Credit (Section 25D) expired December 31, 2025 under the One Big Beautiful Bill Act (OBBBA, PL 119-21). Battery installs placed in service in 2026 or later are not eligible. We list the credit as expired in the proposal and do not deduct it. If the system was placed in service on or before December 31, 2025 the credit may apply; we document the placed-in-service date. | 25D expired December 31, 2025 under OBBBA; we do not deduct it for 2026 installs. | 25D applies; we deduct 30 percent from the battery cost. |
| Should the battery be AC-coupled or DC-coupled and what is the difference? | DC coupling routes solar DC directly into the battery before inverting, reducing one conversion step (roughly 2-3 percent round-trip efficiency gain). AC coupling inverts at the panel, then re-inverts back to DC for battery storage. DC coupling is cleaner for new solar plus battery installs; AC coupling is the right choice when retrofitting a battery onto an existing solar system. Tesla Powerwall 3 supports both. Enphase IQ Battery is AC-coupled by design. FranklinWH is AC-coupled. We pick the topology based on whether solar is new or existing. | DC coupling is cleaner for new systems; AC for retrofits. We pick based on whether solar is new or existing. | DC coupling is always better; AC is obsolete. |
| How do you size the battery for typical Oakland Hills PSPS events and what backup-loads should make the list? | Oakland Hills PSPS events typically run 8-24 hours, occasionally longer in extreme weather. We build a backup-loads list with you: refrigerator (1-2 kWh per day), essential lighting (LED, 1-2 kWh per day), Wi-Fi router and modem (0.5 kWh per day), cell phone charging, any medical equipment (CPAP, oxygen concentrator), and gas-furnace blower if applicable. A 13.5 kWh Powerwall covers about a day of these critical loads. We size for the design outage duration and do not assume the whole house is backed up. Cooling and EV charging are usually off the list. | We build the backup-loads list with you and size battery for the design outage duration; whole-house backup is rarely the right call. | Just back up the whole house; the battery will figure it out. |
| Should we install a critical-loads sub-panel or back up the whole house? | Whole-house backup requires a battery large enough to cover all loads including HVAC and any large appliances; runtime drops fast. Critical-loads backup runs through a sub-panel that separates the backed-up circuits (lights, fridge, Wi-Fi, outlets in critical rooms) from non-essential loads. The critical-loads approach is usually cheaper and gives longer runtime per kWh of battery. We design the critical-loads sub-panel circuit list with you and document it in the permit. Tesla Powerwall 3 and FranklinWH can do whole-home or partial; Enphase IQ Battery typically uses a critical-loads sub-panel. | Critical-loads sub-panel is usually the right cost-vs-runtime tradeoff; we design the circuit list with you. | Whole-house backup is the only worthwhile approach. |
| What does the depth-of-discharge (DoD) spec mean and how does LFP chemistry change it? | DoD is the percentage of nameplate capacity usable per cycle without warranty impact. LFP (lithium iron phosphate) batteries (Tesla Powerwall 3, Enphase IQ Battery 5P, FranklinWH aPower) are rated for around 95-100 percent DoD because LFP is thermally stable and tolerates near-full discharge. Older NMC chemistries (some early SimpliPhi units) rated lower. Higher DoD means more usable kWh per nameplate kWh. Tesla Powerwall 3 nameplate is 13.5 kWh with around 13 kWh usable. | LFP batteries are ~95-100 percent DoD; we use usable kWh, not nameplate, in the sizing calc. | DoD doesn't matter; just look at the nameplate. |
| What warranties cover the battery hardware and what should I scrutinize? | Tesla Powerwall 3 warranty is 10 years unlimited cycles. Enphase IQ Battery 5P is 10 years or 6,000 cycles or 28 MWh throughput, whichever first. FranklinWH aPower is 12 years 70 percent end-of-warranty capacity. Installer labor warranty (separate) runs 5-10 years. The throughput and capacity-retention numbers matter more than the year count. We list each warranty term in the proposal. | Warranties differ on years, cycles, throughput, and end-capacity. We list each term in the proposal. | All warranties are the same; just pick a brand. |
| How long will the battery actually run during a PSPS event? | Runtime is usable kWh divided by hourly load. A 13 kWh usable Powerwall covering 0.5 kW continuous (fridge cycling, LEDs, Wi-Fi, router) runs roughly 26 hours; covering 1.0 kW (above plus medical equipment) runs roughly 13 hours; covering 2.5 kW (whole house including cycling HVAC) runs roughly 5 hours. We give you a per-load-profile runtime table, not a single number. We do not promise a runtime; we show the math. | Runtime depends on the backup-loads list; we share a per-profile runtime table. | It will last all night; don't worry about loads. |
| How does NEC Article 706 and 705.12 affect the battery install? | NEC Article 706 covers Energy Storage Systems and 705.12 covers interconnection. We confirm the panel busbar rating, document the 120 percent rule math (main breaker plus inverter output breaker cannot exceed 120 percent of busbar rating), and specify any required line-side tap if the inverter output exceeds the allowed sum. We document grounding electrode per NEC 250 and any required revenue-grade metering. We do not skip the busbar math. | We confirm the busbar rating and document the NEC 705.12 math in the permit drawings. | 705.12 doesn't matter for batteries. |
| What certifications should the battery have for Oakland install? | UL 9540 is the system-level safety certification for energy storage; UL 9540A is the thermal-runaway propagation test. All major brands (Tesla, Enphase, FranklinWH, LG Energy Solution) carry UL 9540 and UL 9540A. The data sheet should show both. Oakland P&B confirms the listing in plan review. We do not install a battery without UL 9540 and 9540A. | UL 9540 + 9540A required; we confirm both on the data sheet and in the permit. | UL listings don't matter; the manufacturer covers it. |
| Tesla Powerwall 3 vs Enphase IQ Battery 5P vs FranklinWH for an Oakland install: how do you decide? | Tesla Powerwall 3 has an integrated 11.5 kW continuous inverter, supports DC-coupled new solar plus AC-coupled retrofit, and pairs with Tesla cars cleanly. Enphase IQ Battery 5P is modular (5 kWh per unit), AC-coupled, and pairs well with existing Enphase microinverter systems. FranklinWH aPower stacks two 13.6 kWh modules with a unified gateway and has the best whole-home backup capacity for the price. We match the brand to your solar topology, your backup-loads target, and whether you want modularity or maximum capacity. We do not push one brand by default. | Brand depends on solar topology and backup-loads target; we share the comparison and pick with you. | Tesla is always best; the others are junk. |
| What monitoring app comes with the battery and what does it actually show? | Tesla uses the Tesla app (solar + battery + EV in one view, real-time and historical data). Enphase uses Enlighten (per-microinverter solar and battery state-of-charge). FranklinWH uses the FranklinWH app (whole-home view with backup-loads circuit-level data). All show state of charge, daily and monthly throughput, faults, and grid-tied vs backup status. We commission monitoring at install and walk you through it. We do not consider commissioning complete until you can see live data on your phone. | We commission monitoring at install and walk you through the app. | Just download the app; you'll figure it out. |
| Can the battery do rate arbitrage on PG&E TOU even without solar? | On PG&E E-ELEC and EV2-A, charging the battery from the grid during super-off-peak (midnight-3pm) and discharging during 4-9pm peak captures a per-kWh delta of roughly 20-30 cents. Without solar, the year-1 arbitrage savings on a 13 kWh battery typically range $400-$900 depending on the rate plan and consumption pattern. This rarely pays back the hardware on its own; arbitrage is a secondary benefit on top of backup resilience. We model both scenarios. | Arbitrage savings are modest; backup resilience is the primary value. We model both. | Arbitrage will pay back the battery in 3 years. |
| Our Oakland Hills address is in the Very High FHSZ. Does the battery need to be outdoor or indoor? | CRC R337 (wildfire-resistant construction) applies to Oakland Hills addresses in the Very High FHSZ. Battery enclosures must comply with the listed installation manual for FHSZ; indoor installs in a garage or detached structure are generally allowed if the structure meets R337 envelope requirements. Outdoor installs require ignition-resistant placement and CRC R331 setbacks from the structure. We document the FHSZ designation, the proposed location, and the install-manual citation in the permit drawings. We do not install a battery in zone-0 (within 5 feet of combustible vegetation). | Hills addresses follow CRC R337 and R331 setbacks; we document the install location per the manufacturer manual. | FHSZ doesn't change battery installs. |
| What does commissioning look like at the end of the battery install? | We do a backup-test: simulate a grid outage by opening the main breaker and confirm the battery picks up critical loads within the inverter's transfer time (Tesla Powerwall 3 around 200 ms, Enphase IQ Battery 5P around 500 ms). We verify state-of-charge readings against measured voltage, confirm the gateway communicates with the manufacturer cloud and your phone, and walk through the app together. We give you a signed commissioning sheet with the measured transfer time. Without commissioning, the battery may not transfer cleanly during a real outage. | We do a backup-test simulation and share the signed commissioning sheet. | Just push the button at the end; you don't need a test. |
| What is the best next step before signing an Oakland battery contract? | Schedule a site visit, verify SGIP budget status on selfgenca.com (as of December 31, 2025 the ratepayer-funded General Market, Equity, and Equity Resiliency budgets are closed to new applications; only the AB 209-funded RSSE budget remains open and it is fully reserved — new apps go to an attrition-based waitlist, so we document the waitlist position rather than promising a rebate), decide on the backup-loads list and battery sizing, run the NEM 3.0 self-consumption model on your PG&E rate plan (E-ELEC or EV2-A), and get a written quote with line-item pricing: battery hardware, inverter, gateway, installation labor, Oakland P&B permits, structural attachment if wall-mounted, monitoring setup. Compare two or three bids on the same scope and battery brand. | Verify SGIP status on selfgenca.com — only RSSE is open to new apps and it is waitlisted — and compare two bids on the same scope before signing. | Sign today; SGIP will run out tomorrow. |
| How do you handle the grounding electrode for the battery system in an older Oakland house? | NEC Article 250 requires the ESS to be bonded to the existing grounding electrode system. Older Oakland Craftsman and bungalow homes sometimes have only a single ground rod, an undersized water-pipe bond, or both; the existing system may not meet current code for a new ESS. We measure the existing grounding electrode resistance, document compliance, and add supplemental electrodes (typically a second 8-foot copper-clad rod 6 feet from the first) if required. We include the grounding work as a line item in the proposal. | We measure existing grounding and add supplemental electrodes if required; older Oakland homes often need an upgrade. | Just bond it to the panel; that's enough. |
| Will you perform an NEC Article 220 load calculation before sizing the new panel or service? | Yes. We total existing connected loads, apply Article 220 demand factors, then add expected future loads (heat pump HVAC, heat pump water heater, EV charger, induction range, battery) before recommending a service size. | We perform the Article 220 calculation during the site visit and share the worksheet with the quote. | We size from the existing panel rating. |
| Is this a service upgrade or a panel-only replacement, and how do you decide? | We explain the difference plainly: a service upgrade changes the service drop, meter, and main breaker rating (utility coordination required); a panel-only replacement swaps the breaker box at the existing service rating. We base the recommendation on the Article 220 result, not on a default upsell. | We confirm after the load calc whether the existing service amperage is adequate; if it is, we propose a panel-only replacement. | It is the same thing. |
| Who coordinates with the utility for the service upgrade, and what lead time should we expect? | We coordinate with the serving utility (your investor-owned utility such as PG&E, SCE, or SDG&E, or your municipal utility such as LADWP or SMUD) for the service drop, meter swap, and any utility-side work. We document the expected utility lead time in the quote because it often dominates the project schedule. | We open the utility ticket after permit issuance and update the schedule when the utility confirms its lead time. | The utility handles itself. |
| How do you decide between 200A, 225A, or 320A service, and how much headroom should we plan for? | We size to the Article 220 calculated demand plus headroom for the ten-year horizon of electrification projects already on the table. For most California single-family homes adding heat pump HVAC, heat pump water heater, and one or two EVs, a properly sized 200A service is enough; 225A or 320A is only justified when the load calc shows it. | We present two options with the load-calc deltas so the homeowner can decide between 200A and 225A. | Bigger is always better, so we go 320A. |
| When does a smart panel (Span, Lumin, Eaton EV Choice) make sense versus a standard load center? | A smart panel can avoid a service upgrade when load shedding can keep peak demand under the existing service rating, or when granular per-circuit metering is desired. A standard load center is the right choice when the Article 220 result already fits the service rating, the homeowner does not want app-based controls, or budget is tight. | We model both options against the load calc and present the cost delta plus tradeoffs. | Smart panels are always the answer. |
| Is a sub-panel addition (for a detached garage, ADU, or workshop) a viable alternative to a full service upgrade? | A sub-panel can serve outbuilding loads without changing the main service rating when the Article 220 calc shows the existing service still has capacity. We size the sub-panel feeder per NEC and run it under permit. | We compare a sub-panel addition against a service upgrade with the load-calc results, then recommend the option that fits the future plan. | Sub-panels always require a service upgrade. |
| Will you inspect and update the grounding electrode system as part of the panel work? | Yes. We verify the grounding electrode system (ground rods, water-pipe bond, concrete-encased electrode where present), measure resistance where required, and upgrade conductors and connections to the current code edition adopted by your jurisdiction. | We inspect the grounding electrode system during the rough-in and bring it to current code if any element is deficient. | Grounding is fine if the panel is bonded. |
| Which circuits in the new panel will require AFCI or GFCI protection, and what code edition are you applying? | We apply the California Electrical Code edition currently adopted by your local AHJ (the California Electrical Code is based on the NEC with California amendments). We itemize AFCI-required and GFCI-required circuits and price the AFCI/GFCI breakers separately so the homeowner sees the cost driver. | We apply AFCI and GFCI rules per the current adopted code edition and confirm exact requirements during permit submittal. | AFCI rules are confusing, so we skip them. |
| Will the quote include whole-home surge protection, and which type? | We recommend a Type 2 surge protective device (SPD) integrated with the new panel as a standard line item; Type 1 SPD at the service entrance is an upgrade option for homes with frequent utility-side transients. We explain warranty terms and replacement procedure after a major surge event. | We include a Type 2 SPD with the panel and price a Type 1 SPD upgrade separately. | Surge protection is unnecessary. |
| Does the existing panel location meet current code clearances, or do we need to relocate it? | We measure NEC Article 110 working-clearance requirements (depth in front of the panel, clear width, headroom) and confirm the panel is not behind cabinets, in clothes closets, or in other prohibited locations. If the location does not meet current code, we quote the relocation. | We verify clearance during the site visit and quote relocation only if the current spot does not meet code. | The existing spot is fine because the old panel fit. |
| Will you use conduit or NM cable for the new circuits, and how do you decide? | We follow the California Electrical Code wiring methods permitted for residential occupancies. Conduit is required for exterior runs and where physical damage is likely; NM cable is permitted in many concealed interior runs. We size conductors for the future load, not just today's circuit. | We follow code wiring methods and explain any conduit upgrades that affect the price. | Whatever is easiest and cheapest. |
| Who pulls the electrical permit at the local AHJ (city or county permit center), and is the fee itemized in your quote? | We pull the electrical permit at the local AHJ in our own name, attend the inspection, and itemize the permit fee in the quote. We do not ask the homeowner to pull the permit. | We pull the permit at the local AHJ and break out the fee on the quote. | We do not pull permits because they slow the job. |
| Walk us through the inspection process: which inspections are required and what does each one check? | We typically schedule a rough-in inspection (panel mounted, grounding electrode system verified, conductors run) and a final inspection (devices terminated, AFCI/GFCI verified under test, labeling complete). The exact sequence depends on the local AHJ. | We confirm the inspection sequence with the AHJ at permit submittal and update the homeowner on the schedule. | There is just one inspection at the end. |
| How long will the home be without power during the panel swap, and what time of day will it occur? | A panel-only swap typically takes 6 to 10 hours; a service upgrade with meter swap can take a full day and is constrained by the utility's window. We confirm the exact window and time-of-day with the utility before scheduling. | We give a window once the utility confirms the meter swap appointment. | Will not take long. |
| Will the new panel be sized and labeled for future solar or battery interconnection per NEC Article 705.12? | Yes. We size the busbar and main breaker so the future solar PV and battery interconnection meets NEC Article 705.12 (the 120% rule or supply-side connection, depending on the configuration). We document the headroom available so the future installer can verify quickly. | We confirm Article 705.12 compatibility during design and note the calculated headroom on the panel schedule. | Solar and battery do not affect panel sizing. |
| If we may add a generator interlock or transfer switch later, what should the new panel design account for? | We can include a generator interlock kit with the panel install, or pre-wire space for a future automatic transfer switch. Interlock is the lowest-cost option for occasional backup; ATS is the right path for whole-home automatic backup. | We pre-wire space for a future interlock or transfer switch if requested, and note it on the panel schedule. | Generator readiness is a future problem. |
| How are you treating the federal §25C tax credit for panel-upgrade work? | The federal §25C Energy Efficient Home Improvement Credit expired December 31, 2025 under OBBBA (PL 119-21). For panel work performed in 2026 and later, we do not list §25C as an applicable credit and we will not claim eligibility. | We confirm the current federal-credit status against the IRS guidance at quote time and update the homeowner. | You qualify for the 30 percent federal tax credit on panel work. |
| Is panel-upgrade work eligible for HEEHRA (Home Electrification and Appliance Rebates) in California, and what is the current funding status? | Panel-upgrade work, sub-panel additions, and electrical wiring needed to support qualifying electrification projects can be eligible HEEHRA expenses for income-qualified households. CPUC reported HEEHRA funds fully reserved earlier this year, so we do not promise current availability and confirm against the CPUC HEEHRA portal at quote time. | We share the current HEEHRA funding status from the CPUC portal and adjust the incentive line items accordingly. | HEEHRA covers all panel upgrades automatically. |
| Are there TECH Clean California, CCA (Community Choice Aggregator), or utility-side incentives that apply to this panel work? | TECH Clean California is statewide for qualifying heat-pump installations; panel-upgrade work tied to a qualifying heat pump may be eligible. Many CCAs (such as MCE, SVCE, CleanPowerSF, SJCE) and IOUs run their own electrification rebates with panel-work eligibility. We confirm the program rules in writing before the quote and list each program with its reservation status. | We confirm current eligibility with each named program and document the reservation status on the quote. | All rebates are guaranteed if you sign today. |
| What is the manufacturer warranty on the new panel, breakers, and any smart-panel hardware? | We list the manufacturer warranty for the panel and main breaker (typically 10 years), branch-circuit breakers (typically 1 to 10 years), and smart-panel hardware separately. We explain what voids each. | We attach the manufacturer warranty documents with the quote. | Warranty is whatever the box says. |
| What is your labor warranty on the panel installation, and does it cover related troubleshooting? | We offer a written labor warranty (typically 1 to 5 years) covering workmanship on terminations, conduit runs, and grounding work. We explain what is covered and what is not. | We include a written labor warranty with the quote and explain the covered scope. | Our work is good, no warranty needed. |
| Based on the Article 220 result, what do you recommend as the best next action and why? | We propose a single recommended option with the load-calc rationale, list one alternative with the cost delta, and explain what would change our recommendation. We are clear about which costs are firm and which depend on the utility or AHJ. | We summarize the recommendation in writing after the site visit and load calc. | Whatever you want is fine. |
Green flags, reasonable caveats, red flags
Green flags
- Shared NEC 220 load calc across all future loads (HP HVAC plus HPWH plus EV plus battery)
- Single project lead coordinating Oakland P&B permits plus PG&E coordination plus knob-and-tube assessment plus structural review for Craftsman attachment
- Sequenced phased plan with panel-capacity gating
- BAAQMD Rule 9-4 (furnaces, 2029) and Rule 9-6 (water heaters, 2027) timing checked across HP HVAC plus HPWH
- Backup-loads list sized for typical Oakland Hills PSPS outage duration (8-24 hours)
- BayREN Home+ HP HVAC and HPWH reservations confirmed with reservation numbers from bayren.org
- Current SGIP budget status verified at selfgenca.com before quoting: only AB 209-funded RSSE remains open to new applications in 2026 and that budget is fully reserved with new apps on a waitlist served via attrition; ratepayer-funded General Market / Equity / Equity Resiliency budgets are no longer accepting new applications. RSSE waitlist application submitted for income-qualified solar plus battery customers
- TECH and HEEHRA listed only at current reservation status, not assumed as confirmed savings
Reasonable caveats
- Phased work means multiple Oakland P&B permit cycles
- Site visit cost may not credit toward later phases
- Rebate stacking timing matters (BayREN reservation order; SGIP RSSE waitlist; TECH and HEEHRA waitlisted)
- Knob-and-tube rewiring scope may surface during panel upgrade and adds material cost
- Per-phase pricing may shift after site visit
Red flags
- Quotes whole-home lump-sum with no per-phase pricing
- Recommends solar or battery before panel-capacity verification
- Skips Manual J for HVAC sizing
- Promises stacking without confirmed reservations
- Claims §25C or §25D credits apply to 2026+ work
- Splices new circuits into existing knob-and-tube branches
Quote checklist
Check every item before signing.
Required
Optional but recommended
Quote comparison worksheet
Print this and fill in by hand, or capture quotes side-by-side as you receive them.
| Line item | Contractor 1 | Contractor 2 | Contractor 3 |
|---|---|---|---|
| Quote includes heat pump HVAC equipment model, capacity (tons / BTU), efficiency ratings (SEER2 / HSPF2), and warranty. (required) | |||
| Quote includes a Manual J load calculation, or commits to performing one before final sizing. (required) | |||
| Quote includes a duct inspection, return-air assessment, and any duct modifications needed. (required) | |||
| Quote includes electrical panel/service assessment and any load-calculation requirements. (required) | |||
| Quote explains whether a panel upgrade, service upgrade, or smart load management is needed. (required) | |||
| Quote separates confirmed incentives from assumed or maybe incentives with reservation requirements noted. (required) | |||
| Quote notes the refrigerant type and confirms it meets current EPA rules (R-454B / R-32 for systems installed after the A2L transition). | |||
| Quote notes the heat pump's published HSPF2 / COP at local design temperature and whether backup heat is required. (required) | |||
| Quote includes a startup / commissioning procedure: charge verification, airflow measurement, static pressure check. | |||
| Quote specifies the labor warranty (in addition to manufacturer parts warranty) and what voids each. | |||
| Quote names whether BAAQMD Rule 9-4 (furnaces, effective 2029) affects the replacement timing for this appliance class. (required) | |||
| Quote acknowledges Oakland Hills vs flatland microclimate sizing assumptions used in Manual J. (required) | |||
| Quote names who pulls the City of Oakland Planning and Building mechanical and electrical permit (oaklandca.gov, Tyler EnerGov) and itemizes the fee. (required) | |||
| Quote names the BayREN Home+ heat-pump HVAC rebate reservation status and includes the reservation number once confirmed. | |||
| Quote specifies model, capacity (gallons), first-hour rating, and UEF efficiency. (required) | |||
| Quote includes a location assessment with air volume calculation or ducting plan. (required) | |||
| Quote includes condensate drain routing and overflow safety per CPC. (required) | |||
| Quote includes the new dedicated electrical circuit, sized per manufacturer specs (conductor gauge and breaker rating itemized). (required) | |||
| Quote includes gas line decommissioning per CPC (capping and labeling) when replacing a gas tank. (required) | |||
| Quote notes the unit's decibel rating and how the install location affects living-area noise. | |||
| Quote specifies the manufacturer warranty (typically 10 years tank) and labor warranty separately. | |||
| Quote separates confirmed incentives from assumed incentives with program ID and reservation status. (required) | |||
| Quote names whether BAAQMD Rule 9-6 (water heaters under 75k BTU/hr, effective January 1, 2027) affects the replacement timing. (required) | |||
| Quote names the BayREN Home+ HPWH rebate reservation status and includes the reservation number once confirmed. (required) | |||
| Quote names who pulls the City of Oakland Planning and Building plumbing and electrical permits (oaklandca.gov, Tyler EnerGov) and itemizes the fees. (required) | |||
| Quote specifies charger model, continuous amperage rating, and connector type (J1772 / NACS). (required) | |||
| Quote includes an Article 220 load calculation confirming panel and service capacity. (required) | |||
| Quote addresses whether smart load management (Span, Emporia, charger-side) can avoid a panel/service upgrade. | |||
| Quote lists conduit routing (interior / attic / exterior / trench) with linear footage and per-foot incremental cost. (required) | |||
| Quote explains the final inspection process including who is present and when final payment is due. (required) | |||
| Quote confirms grounding and bonding meet Article 250, including any service-ground updates. (required) | |||
| Quote notes whether the install supports a future second EV via load-sharing or pre-pulled conductors. | |||
| Quote separates manufacturer hardware warranty from installer labor warranty with terms for each. (required) | |||
| Quote includes a PG&E EV2-A vs E-ELEC vs E-TOU-C cost model based on 12 months of usage. (required) | |||
| Quote names who pulls the City of Oakland Planning and Building electrical permit (oaklandca.gov, Tyler EnerGov) and itemizes the fee. (required) | |||
| Quote handles federal §30C eligibility honestly: documents that the credit had a statutory cliff on June 30, 2026 (OBBBA Public Law 119-21); for pre-cliff installs that may have qualified, verifies the census tract; for post-cliff installs, states plainly that §30C does not apply. (required) | |||
| Quote models future load (heat pump, EV, water heater) for sizing, not just past consumption. (required) | |||
| Quote uses NEM 3.0 export rates and explicitly notes the change from NEM 2.0. (required) | |||
| Quote includes roof condition assessment with remaining lifetime estimate. (required) | |||
| Quote specifies panel and inverter brand, wattage, efficiency, and warranty. (required) | |||
| Quote includes a shading analysis and string or microinverter design notes. (required) | |||
| Quote states the production guarantee (kWh/year) and how it is enforced. | |||
| Quote names the monitoring platform and any subscription cost. | |||
| Quote names who handles PG&E interconnection paperwork. (required) | |||
| Quote separates confirmed incentives from assumed with reservation status. (required) | |||
| Quote includes a 12-month production model with Oakland Hills vs flatland microclimate derate and 3D shading analysis for mature trees. (required) | |||
| Quote notes whether SolarAPP+ streamlined permitting through Oakland Planning and Building applies. | |||
| Quote names whether a stamped structural letter or engineered tie-down is required for older Craftsman or bungalow rafter geometry. (required) | |||
| Quote documents the FHSZ designation against the address and any CRC R337 hardware required for Oakland Hills installs. | |||
| Quote states usable kWh (not just nameplate) and continuous AC inverter output. (required) | |||
| Quote includes a backup-loads list with runtime estimates. (required) | |||
| Quote states whether the battery is AC-coupled or DC-coupled with the solar array. (required) | |||
| Quote states current SGIP budget status (as of 2026, ratepayer-funded General Market / Equity / Equity Resiliency budgets are no longer accepting new applications; only AB 209-funded RSSE remains open and that budget is fully reserved with new apps on a waitlist served via attrition) and any RSSE waitlist application reference if pursued. (required) | |||
| Quote confirms compliance with CRC 1207 / R327 fire setback rules for the chosen install location. (required) | |||
| Quote specifies battery warranty (years, cycles, throughput) and labor warranty separately. (required) | |||
| Quote names the battery monitoring platform and any user-side controls (time-of-use scheduling, backup-mode toggle). | |||
| Quote names who handles PG&E interconnection updates for the battery. (required) | |||
| Quote explains the SGIP RSSE waitlist application workflow and timeline before equipment is delivered (RSSE is the only SGIP tier accepting new applications as of 2026, and its budget is fully reserved with new apps on a waitlist served via attrition). | |||
| Quote names the SGIP path pursued: as of 2026 only the AB 209-funded RSSE remains open to new applications, and its budget is fully reserved with new apps on a waitlist served via attrition. Ratepayer-funded General Market / Equity / Equity Resiliency budgets are no longer accepting new applications. Includes any RSSE waitlist reference number. (required) | |||
| Quote names who pulls the City of Oakland Planning and Building electrical permit and itemizes CRC R331 (and R337 for Hills) fire-setback measurements. (required) | |||
| Quote includes a year-1 self-consumption and cost model under PG&E NEM 3.0 with and without battery on E-ELEC or EV2-A. (required) | |||
| Quote includes a backup-loads list sized for typical Oakland Hills PSPS outage duration (8-24 hours). | |||
| Quote includes an NEC Article 220 load calculation accounting for current connected loads and planned future loads (heat pump, heat pump water heater, EV charger, induction range, battery). (required) | |||
| Quote states whether this is a service upgrade or panel-only replacement and the load-calc rationale behind the choice. (required) | |||
| Quote names the recommended service amperage (e.g. 200A or 225A) and the calculated headroom remaining after the planned future loads. (required) | |||
| Quote names who coordinates with the serving utility (PG&E, SCE, SDG&E, LADWP, SMUD, or other) and documents the expected utility lead time. (required) | |||
| Quote names who pulls the electrical permit at the local AHJ and itemizes the permit fee. (required) | |||
| Quote confirms AFCI and GFCI breaker requirements per the California Electrical Code edition currently adopted by the local AHJ and itemizes the AFCI / GFCI breaker cost separately. (required) | |||
| Quote includes inspection of the grounding electrode system and any conductor or connection upgrades required for the new panel. (required) | |||
| Quote confirms that the new panel busbar and main breaker are sized to support future solar PV or battery interconnection per NEC Article 705.12. (required) | |||
| Quote states the expected utility downtime window during the panel swap and the time-of-day window the utility has confirmed. (required) | |||
| Quote includes whole-home surge protection (Type 2 SPD integrated with the panel) and prices a Type 1 SPD upgrade separately. | |||
| Quote explains whether a smart panel (Span, Lumin, Eaton EV Choice) is appropriate versus a standard load center, with cost delta and tradeoffs. | |||
| Quote separates confirmed CA incentives (HEEHRA, TECH Clean California, IOU, CCA, municipal-utility programs) from assumed incentives with reservation status, and reflects current CPUC funding status for HEEHRA. (required) |
Incentive verification worksheet
| Program | Amount | Eligibility | Pre-approval? | Confidence | Verified | Source |
|---|---|---|---|---|---|---|
| Section 25C Energy Efficient Home Improvement Credit (heat pumps) | Expired Dec 31, 2025. For 2023–2025: up to $2,000/yr (30% of project cost, capped) for qualifying heat pumps and heat pump water heaters. | EXPIRED: This federal credit ended Dec 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21, signed July 4, 2025). Installations completed in 2026 or later do not qualify, regardless of when payment was made. For installations completed during 2023–2025, the credit applied to U.S. primary residences with heat pumps or heat pump water heaters that met or exceeded the highest CEE efficiency tier in effect at the start of the install year; starting 2025, the manufacturer's Qualified Manufacturer Identification Number (QMID) was required on the tax return. Homeowners with eligible 2025 installations may still claim the credit on their 2025 federal tax return. Verify with a qualified tax professional. | Verify | high | 2026-05-30 | Internal Revenue Service, Internal Revenue Service, ENERGY STAR (EPA/DOE) |
| Section 25C Energy Efficient Home Improvement Credit (electrical panel upgrade) | Expired Dec 31, 2025. For 2023–2025: up to $600 (30% of project cost, capped) when paired with a qualifying 25C electrification project. | EXPIRED: This federal credit ended Dec 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21, signed July 4, 2025). Installations completed in 2026 or later do not qualify, regardless of when payment was made. For installations completed during 2023–2025, the credit applied to electrical panel upgrades installed consistent with the National Electric Code, with a load capacity of at least 200 amps, installed in conjunction with (and enabling) a qualifying energy efficiency improvement or specific energy property (heat pump, heat pump water heater, central AC, water heater, furnace, boiler, or biomass stove/boiler). The credit fell under the $1,200 annual envelope cap. Homeowners with eligible 2025 installations may still claim the credit on their 2025 federal tax return. Verify with a qualified tax professional. | Verify | high | 2026-05-30 | Internal Revenue Service, Internal Revenue Service, ENERGY STAR (EPA/DOE) |
| Section 25D Residential Clean Energy Credit (solar PV) | Expired Dec 31, 2025. For 2023–2025: 30% of total installed cost, no cap. | EXPIRED: This federal credit ended Dec 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21, signed July 4, 2025). Expenditures made after Dec 31, 2025 do not qualify — for §25D, the IRS treats the expenditure date as the date the installation is placed in service (completed), not the date of payment. A homeowner who paid a deposit in 2025 but whose system was placed in service in 2026 does not qualify. For installations placed in service during 2023–2025, the credit applied to solar PV systems supplying electricity to a U.S. residential dwelling used by the taxpayer as a residence (principal residence not required; second homes qualified; rentals not occupied by the taxpayer did not qualify), satisfying applicable fire and electrical codes, with installation costs included in the credit basis. The credit was nonrefundable with carryforward. Homeowners with eligible 2025 placed-in-service installations may still claim the credit on their 2025 federal tax return. Verify with a qualified tax professional. | Verify | high | 2026-05-30 | Internal Revenue Service, Internal Revenue Service, ENERGY STAR (EPA/DOE) |
| Section 25D Residential Clean Energy Credit (battery storage) | Expired Dec 31, 2025. For 2023–2025: 30% of total installed cost, no cap (battery capacity at least 3 kWh). | EXPIRED: This federal credit ended Dec 31, 2025 under the One Big Beautiful Bill Act (Public Law 119-21, signed July 4, 2025). Expenditures made after Dec 31, 2025 do not qualify — for §25D, the IRS treats the expenditure date as the date the installation is placed in service (completed), not the date of payment. A homeowner who paid a deposit in 2025 but whose system was placed in service in 2026 does not qualify. For installations placed in service during 2023–2025, the credit applied to battery storage systems with a rated capacity of at least 3 kilowatt-hours installed in a U.S. home used by the taxpayer as a residence (existing homes and new construction; principal residence not required; rentals not occupied by the taxpayer did not qualify). Standalone batteries (not paired with solar) were explicitly eligible from Jan 1, 2023 onward. The credit was nonrefundable with carryforward. Homeowners with eligible 2025 placed-in-service installations may still claim the credit on their 2025 federal tax return. Verify with a qualified tax professional. | Verify | high | 2026-05-30 | Internal Revenue Service, Internal Revenue Service, ENERGY STAR (EPA/DOE) |
| California Self-Generation Incentive Program (SGIP) — residential battery storage | As of 2026-06-08, only the Residential Solar and Storage Equity (RSSE) AB 209 budget remains open for new applications, and that budget is fully reserved — new applications are placed on a waitlist served through attrition of cancelled projects. Per-kWh rates by tier (for context — only RSSE accepts new apps in 2026): RSSE $1,100/kWh storage + $3,100/kW solar; Equity Resiliency $1,000/kWh; Equity $850/kWh; San Joaquin Valley Residential $1,100/kWh; Small Residential Storage / General Market $150/kWh. Per-project totals depend on installed battery capacity (kWh) and tier eligibility. | Administered by the California Public Utilities Commission (CPUC) and delivered through utility program administrators (PG&E, Center for Sustainable Energy / SDG&E territory, SoCalGas, SCE; LADWP customers are not eligible). Budget status as of 2026-06-08: per SGIP program administrator (CSE / sgipsd.org), 'as of December 31, 2025, all new application submissions are strictly available to the Residential Solar and Storage Equity (RSSE) AB 209 budget. At this time, all available RSSE AB 209 funding has been reserved.' New RSSE applications are placed on a waitlist in order received and funded through attrition of cancelled projects. The ratepayer-funded General Market, Equity, and Equity Resiliency budgets are not accepting new applications. Tier rates for reference (applicable to reservations made while budgets were open): (1) Residential Solar and Storage Equity (RSSE) — $1,100/kWh storage plus $3,100/kW solar; low-income residential customers; AB 209-funded; reservation window opened June 2, 2025. (2) Equity Resiliency — $1,000/kWh; IOU residential customers in high fire-threat districts and/or medical baseline / income-qualified. (3) Equity — $850/kWh; income-qualified IOU residential customers. (4) San Joaquin Valley Residential — $1,100/kWh; PG&E and SCE pilot footprint. (5) Small Residential Storage / General Market — $150/kWh. Reservations require a one-year completion window and enrollment in a qualified Demand Response program. Tier eligibility, income documentation, HFTD-tier residency, and budget-availability status must be verified against the current SGIP Handbook and the customer's utility administrator before any contractor work begins. | Yes | high | 2026-06-08 | California Public Utilities Commission (CPUC) |
| California Home Electrification and Appliance Rebates (HEEHRA) — single-family | When available, up to $8,000 (households below 80% AMI) or $4,000 (80–150% AMI) for a qualifying heat pump HVAC system, with additional rebates for heat pump water heaters, electrical panel upgrades, and wiring inside the per-household envelope. Phase I single-family funds are currently fully reserved (waitlist active). | PROGRAM STATUS: Single-family Phase I is FULLY RESERVED statewide as of 2026-02-24 — new single-family applications are not being accepted and a waitlist is in place. Multifamily applications remain open. Phase II is under development pending DOE approval. HEEHRA is California's implementation of the federal IRA Home Electrification and Appliance Rebates program, administered by the California Energy Commission (CEC) with single-family implementation through TECH Clean California. When open, eligibility requires income-qualified single-family homeowners (or landlords with income-qualified tenants) at or below 150% of Area Median Income; income tiers determine rebate amount (below 80% AMI vs 80–150% AMI). Projects must obtain an approved reservation before installation; rebates only apply to heat pumps installed after the reservation is approved. Income verification is required before a contractor can submit a reservation. Replacement of an existing non-heat-pump space heating system is required for the HVAC rebate. Homeowners should check techcleanca.com and the CEC IRA rebate page for re-opening announcements before signing a contract. | Yes | high | 2026-06-08 | California Energy Commission (CEC), California Energy Commission (CEC) / Energy Solutions |
| TECH Clean California — heat pump HVAC incentive (single-family, market-rate) | Currently unavailable: single-family heat pump HVAC incentives are fully reserved as of 2026-05-30. Historical incentive amounts varied by utility service territory and customer income tier — verify against techcleanca.com for re-opening announcements. | PROGRAM STATUS: Single-family heat pump HVAC incentives are FULLY RESERVED as of 2025-11-14 — new single-family reservations are not being accepted. Multifamily program activity continues. TECH Clean California is a statewide CEC initiative administered by Energy Solutions under contract with Southern California Edison on behalf of California utilities under CPUC oversight, designed to accelerate adoption of clean space and water heating. When open, single-family eligibility requires the homeowner to be a customer of a participating California utility, the installation to use an enrolled TECH contractor (1,600+ contractors enrolled statewide), and the project to obtain a reservation before installation. Specific dollar amounts varied by service territory and income tier — refer to techcleanca.com for the next-funded round's amounts and any income-qualified bonus structure. Homeowners should not assume an incentive is available; verify current reservation status with techcleanca.com before signing a contract. | Yes | high | 2026-06-08 | California Energy Commission (CEC) / Energy Solutions, California Energy Commission (CEC) / Energy Solutions |
| TECH Clean California — heat pump water heater incentive (single-family, market-rate) | Currently unavailable: single-family heat pump water heater incentives are fully reserved as of 2026-05-30. Service-area-specific funds were fully reserved between May 2024 and February 2025; the November 2025 round is also fully reserved. Historical incentive amounts varied by utility service territory and customer income tier — verify against techcleanca.com for re-opening announcements. | PROGRAM STATUS: Single-family heat pump water heater incentives are FULLY RESERVED as of 2025-11-14 — new single-family reservations are not being accepted. Service-area-specific incentives were fully reserved between May 2024 and February 2025; subsequent rounds have also exhausted. TECH Clean California is a statewide CEC initiative administered by Energy Solutions under CPUC oversight. When open, single-family eligibility requires the homeowner to be a customer of a participating California utility, the installation to use an enrolled TECH contractor, and the project to obtain a reservation before installation. Specific dollar amounts varied by service territory. Homeowners should not assume an incentive is available; verify current reservation status with techcleanca.com before signing a contract. Income-qualified homeowners may be routed to HEEHRA instead (also currently fully reserved for single-family). | Yes | high | 2026-06-08 | California Energy Commission (CEC) / Energy Solutions, California Energy Commission (CEC) / Energy Solutions |
| California Net Billing Tariff (NEM 3.0) — solar export compensation framework | Policy framework, not a direct rebate. Excess solar generation exported to the grid is compensated at a rate reflecting the time-varying grid value of that generation (Avoided Cost Calculator methodology), rather than at the retail electricity rate that NEM 2.0 used. Net export compensation under the Net Billing Tariff is typically materially lower than under NEM 2.0; pairing solar with battery storage may materially affect project economics under this framework. | POLICY IN EFFECT — NOT A REBATE: The Net Billing Tariff (NBT), commonly called 'NEM 3.0,' is the current Net Energy Metering framework for new residential solar interconnections in California, adopted by CPUC Decision 22-12-056 and effective for applications submitted on or after 2023-04-15. It applies to new customer-generator interconnections in the three large investor-owned utility territories: Pacific Gas and Electric (PG&E), Southern California Edison (SCE), and San Diego Gas & Electric (SDG&E). LADWP and other publicly owned utilities operate their own net-metering tariffs and are not covered by NBT. Under NBT, onsite solar generation first offsets the customer's own consumption; excess generation exported to the grid is compensated at a time-varying export rate based on the grid's avoided cost rather than the retail rate. Existing NEM 1.0 / NEM 2.0 customers are generally grandfathered under the legacy tariff for a defined period from their original interconnection date — verify against the customer's utility for the legacy term. Homeowners considering new residential solar in PG&E / SCE / SDG&E territory should model project economics specifically under NBT, with and without paired battery storage, before signing a contract. | Interconnection application required, not a financial preapproval. | high | 2026-05-30 | California Public Utilities Commission (CPUC) |
| California Equitable Building Decarbonization (EBD) Direct Install Program | No-cost direct-install upgrades for income-qualified households — homeowner does not pay out-of-pocket for covered measures. Measures may include heat pump HVAC, heat pump water heater, induction stove, electrical panel upgrade, and weatherization, subject to a per-household scope set by the regional implementer. | Administered by the California Energy Commission (CEC) as the statewide Equitable Building Decarbonization Direct Install Program, with delivery through regional implementers and a separate Tribal Direct Install track. Targets low- and moderate-income households in low-income communities; specific AMI thresholds and per-region eligibility rules are set by the regional implementer rather than statewide. Both single-family homeowners and renters in eligible buildings may qualify, though scope and contractor selection are determined by the implementer (homeowners do not freely choose contractors). The program is funded through California IRA HOMES funding (60% allocation to Direct Install, approximately $130.3M) plus state appropriations. Direct Install retrofits began rolling out in summer 2025. Homeowners interested in EBD should contact the CEC at equitablebuildingdecarb@energy.ca.gov or watch for their regional implementer's launch announcement; the program does not accept open online applications the way TECH or HEEHRA do. | Yes | medium | 2026-05-30 | California Energy Commission (CEC), California Energy Commission (CEC) |
| Section 30C Alternative Fuel Vehicle Refueling Property Credit (residential EV charger) | Had a statutory cliff on June 30, 2026. For property placed in service Jan 1, 2023 – June 30, 2026: 30% of the cost of qualifying residential EV charging property, up to $1,000 per item (per charging port, fuel dispenser, or storage property), claimed on IRS Form 8911. Only homes located in a qualifying low-income community or non-urban census tract may have qualified. Installations placed in service after June 30, 2026 do not qualify. | §30C federal EV-charger credit had a statutory cliff on June 30, 2026 (OBBBA Public Law 119-21, 139 Stat. 72, signed July 4, 2025). Under the statute, the credit 'will not be allowed for any property placed in service after June 30, 2026.' This was a cliff termination with no transition rate — installations placed in service on July 1, 2026 or later do not qualify, regardless of when payment or contracting occurred. For property placed in service Jan 1, 2023 through June 30, 2026, the credit covered 30% of the cost of qualifying alternative fuel vehicle refueling property installed at a U.S. home used by the taxpayer as a main home, capped at $1,000 per item (the cap applied separately to each charging port, fuel dispenser, or storage property). Property had to have original use beginning with the taxpayer. Census-tract eligibility was the load-bearing constraint: per IRS guidance, the property had to be installed in a low-income community census tract or non-urban census tract — 2015 Census Tract boundaries applied to installations placed in service before Jan 1, 2025; 2020 Census Tract boundaries applied to installations placed in service on or after Jan 1, 2025. Many urban high-income census tracts did not qualify even where the homeowner installed an otherwise eligible charger. Homeowners claimed the credit on Form 8911 attached to their federal tax return. Pre-cliff installs may have qualified — verify both the placed-in-service date and the census-tract eligibility of the install address with a qualified tax preparer before relying on this credit. | Verify | high | 2026-06-08 | Internal Revenue Service, Internal Revenue Service |
| Golden State Rebates — Heat Pump Water Heater (PG&E-served homes) | Up to $900 instant rebate (water-heating category temporarily unavailable as of January 2026; verify current status before purchase) | As of 2026-05-30 the water-heating category of Golden State Rebates is temporarily unavailable per the program operator; the program is scheduled to sunset June 30, 2026 or earlier if state funds run out. When active, residential customers on a residential rate served by a participating California IOU (PG&E, SCE, SDG&E, or SoCalGas) may qualify. Equipment must meet specified UEF and tank-size requirements (e.g., 45-55 gallon heat pump water heaters with UEF >= 3.30 when replacing an electric water heater). Verify current category status and qualifying-product list at goldenstaterebates.com before purchasing. | Instant rebates are typically applied at point of sale through participating distributors; verify current process at the program site. | medium | 2026-05-30 | California IOU Statewide Rebate Program (PG&E, SCE, SDG&E, SoCalGas) / CLEAResult, Pacific Gas & Electric |
| PG&E Heat Pump HVAC Rebate — current status | Not currently available as a standalone PG&E rebate | As of 2026-05-30 PG&E does not advertise a standalone utility-funded residential heat-pump HVAC rebate on its rebates index. Heat-pump HVAC incentives for PG&E-served homes have flowed through (a) TECH Clean California (single-family fully reserved since November 14, 2025; see ca-tech-heat-pump-hvac), (b) HEEHRA-CA (single-family fully reserved since February 24, 2026; see ca-heehra-single-family), and (c) BayREN Home+ for Bay Area homeowners outside PG&E's direct rebate stack. Homeowners may want to verify with PG&E and check whether any successor utility program has launched. | Verify | high | 2026-05-30 | Pacific Gas & Electric |
| PG&E Residential EV Charging Rebate (Standard and Rebate Plus tiers) | Standard: up to 50% of qualifying charger purchase. Rebate Plus (income-qualified): up to $2,000 for charger installation, or up to $5,000 combined for panel upgrade plus charger installation. | As of 2026-05-30 the program is active. Applicants must be active PG&E residential electric customers (CCA customers eligible) who own or lease a qualifying battery-electric or plug-in hybrid vehicle. The Standard tier has no income test. The Rebate Plus tier may be available to households at or below 80% of county Area Median Income, or to participants in CalFresh, Medi-Cal, SSI, WIC, or similar assistance programs, or to recent Rebate Plus participants in the Pre-Owned EV Rebate program. Standard applicants must apply within 180 days of charger purchase; Rebate Plus applicants receive pre-approval with contractor selection before installation. Rebates are first-come, first-served and limited to one per eligible household. Homeowners may not combine this with the now-closed Empower EV program. | Rebate Plus tier: yes (pre-approval before contractor selection). Standard tier: no, but apply within 180 days of purchase. | high | 2026-05-30 | Pacific Gas & Electric, Pacific Gas & Electric |
| PG&E Energy Savings Assistance Program (ESA) — income-qualified no-cost upgrades | No-cost (program-funded) upgrades. Reported scope includes weatherization, home repairs, lighting, refrigerators (units 15+ years old), heat pump water heaters, and furnace repair or replacement for eligible homeowners with inoperable or unsafe units. | As of 2026-05-30 the program is actively accepting applications. Eligibility is income-based; reported 2026 guidelines are roughly up to $39,125 for a one-person household and up to $80,375 for a four-person household, with guidelines published through May 31, 2026 (verify current thresholds at the program page). Homes must be at least five years old. Applicants who participate in CalFresh, Medi-Cal, SNAP, WIC, or similar assistance programs may qualify without providing income documentation. Application is a three-step process: confirm income guidelines, schedule an in-home assessment with a PG&E energy specialist, and complete the online application at energyinsight.pge.com. | Yes — an in-home assessment by a PG&E-authorized energy specialist determines which measures are installed. | high | 2026-05-30 | Pacific Gas & Electric |
Permit verification worksheet
| Permit | Jurisdiction | Applies to | Confidence | Verified | Source |
|---|---|---|---|---|---|
| Mechanical + electrical permit | city | Heat Pump HVAC | medium | 2026-05-31 | City of Oakland, City of Oakland, City of Oakland |
| Plumbing + electrical permit | city | Heat Pump Water Heater | medium | 2026-05-31 | City of Oakland, City of Oakland, City of Oakland |
| Electrical permit | city | Electrical Panel Upgrade | medium | 2026-05-31 | City of Oakland, City of Oakland, City of Oakland |
| Electrical + building permit | city | Solar Panels | medium | 2026-05-31 | City of Oakland, City of Oakland, City of Oakland |
| Electrical + building permit | city | Battery Storage | medium | 2026-05-31 | City of Oakland, City of Oakland, City of Oakland, City of Oakland |
| Electrical permit | city | EV Charger Installation | medium | 2026-05-31 | City of Oakland, City of Oakland, City of Oakland |