San Diego Community Power customers who recently moved into a home should check the Solar Battery Savings sizing rules before choosing a battery package. Limited billing history changes how the program evaluates solar and storage. A larger battery proposal may need revision before its expected rebate can be relied on.
This guide uses SDCP's current program page and linked Fall 2025 manual, checked October 15, 2026. Confirm the rules applicable to your application; 2024 pilot participants have separate resources.
Start with your own service account
SDCP's service overview lists San Diego, Chula Vista, Encinitas, Imperial Beach, La Mesa, National City and unincorporated San Diego County. Check your actual enrollment rather than assuming every county address qualifies. SDCP supplies generation; SDG&E maintains delivery infrastructure and handles billing and grid outages.
The bill guide shows the separate Community Power generation charges. Bring your current statement and service start date to the contractor, especially if the property's previous occupant had solar.
Ask which sizing route applies
Section 4.2.2 of the Solar Battery Savings manual distinguishes established accounts, recent switches from SDG&E generation and new-home accounts. Established customers use a portal sizing tool; recent switches can require a contractor spreadsheet. Ask SDCP to resolve which route fits your history.
For the new-account route, the manual limits total nameplate usable battery capacity in kWh to 2.5 times the solar system's AC power rating in kW. It addresses participants new to their home or with fewer than six months of Community Power billing history. Do not substitute the panel array's DC rating for the specified AC figure.
For illustration, assume the applicable solar rating is 4 kW AC. The ratio gives 10 kWh usable storage. A proposed 13 kWh battery exceeds that result. This hypothetical calculation is an application check, not a system recommendation or approval.
Request a proposal that shows its inputs
Our suggested review sheet includes:
- The account history used to select the sizing route.
- Solar AC rating, alongside separately labeled panel DC capacity.
- Battery model, quantity and total usable capacity.
- The contractor's sizing review result and any requested corrections.
- A revised payment comparison if equipment changes.
Avoid selecting equipment solely to maximize a rebate estimate. Ask the designer to explain how the proposed system serves household demand and backup priorities, then reconcile that design with program eligibility. Keep each revision dated so the equipment in the contract matches the application.
The program page requires an SDCP residential customer at a qualifying single-family service address, solar-only battery charging and approved equipment and contractors. The contractor applies before installation. Confirm approval and the actual funding reservation before counting an incentive; the webpage is not a reservation for your address.
Coordinate the PPA and backup plan
The manual permits third-party-owned batteries with the owner's documented participation authorization. Confirm that consent for the proposed PPA. Our rebate reservation and payment guide explains why application approval and receiving money are separate steps.
A qualifying no-upfront-cost solar-plus-battery PPA can help eligible homeowners access equipment while preserving upfront cash. The CPUC solar guide explains provider ownership and ongoing payments for generated electricity. Review rate, escalator, term, battery ownership and fees, maintenance, replacement and transfer provisions, plus remaining utility charges. Neither savings nor free electricity is guaranteed.
PG&E's general battery guidance explains that available energy and connected loads limit backup duration. Confirm supported circuits and power limits separately from the rebate calculation. Ordinary grid-tied solar alone generally does not supply outage power; solar recharge needs compatible backup equipment and sufficient sunlight.
Bring your service history and proposed equipment to the West Coast Alternatives homeowner journey. WCA is independent of SDCP; program eligibility and approval must be confirmed through SDCP's authorized channels.