Existing solar pool-heating collectors on a Santee roof do not, by themselves, generate electricity for a home battery. They can still be useful equipment to retain. A solar-and-battery proposal should identify those collectors, the roof area they occupy and the separate photovoltaic system that would produce electricity.
Santee’s public-utilities page directs residents to SDG&E for gas and electric service. Start with your actual utility statement and existing equipment records when requesting a proposal.
Identify what the roof equipment does
Penn State’s energy course, in its solar swimming-pool heating section, explains that water circulates through collectors to absorb heat before returning to the pool. The system typically includes a pump, filter and flow-control valve. This is solar thermal heating.
Photovoltaic panels produce electricity. A battery stores electrical energy. Calling both rooftop systems “solar” does not make their output interchangeable: thermal collector area should not be counted as electrical generating capacity in your PPA estimate.
For a hypothetical home with pool-heating collectors but no photovoltaic panels, adding only a home battery does not turn the existing collectors into a solar-electric charging source. Ask the designer to explain the proposed charging arrangement and whether new photovoltaic panels are included.
Use Santee’s separate project categories
The city’s solar-permitting page separates photovoltaic, pool-heating and domestic-water-heating systems. Its pool-heating page, checked October 17, 2026, describes expedited review for qualifying rooftop systems up to 30 kWth, or 462 square feet of collector area, with additional conditions.
The “th” denotes thermal power. That pool-heating threshold is not a home-battery capacity allowance or permission to install a 30-kilowatt electrical system. Ask Santee’s Building Division to confirm the permit scope for the complete proposed project, especially if existing collectors will be moved or removed.
Our suggested roof-review checklist is:
- Identify existing collectors and proposed photovoltaic panels on the same drawing.
- Show access paths, piping, roof penetrations and service access.
- State whether the pool-heating system stays in place, moves or is removed.
- Identify who handles that work, its cost and responsibility for roof repairs.
Do not assume a no-upfront photovoltaic offer includes modifications to a separate pool-heating installation.
Make the electrical and backup plan explicit
SDG&E’s installation center provides the interconnection route for new solar and battery projects. Have the installer coordinate the actual electrical design with that application and explain the required authorization before operation.
The pool’s pump and controls still need their own power assessment. They are not automatically backed up because the water is heated by sunlight. Our pool-pump backup guide explains questions to ask about that load.
PG&E’s general battery guidance explains that only designated circuits receive backup and that energy use, stored charge and solar conditions affect duration. Ordinary grid-tied photovoltaic solar alone generally does not provide outage power. Compatible backup equipment and suitable sunlight are needed for solar recharging during an outage; thermal pool collectors do not replace that equipment.
Compare a PPA with the complete roof scope
A qualifying no-upfront solar-plus-battery PPA can help eligible homeowners obtain electrical generation and storage without buying the equipment upfront. Confirm the actual offer and property eligibility after the roof assessment.
The CPUC solar guide explains provider ownership and ongoing payments for generated electricity. Review the rate, escalator, term, battery fees, maintenance, transfer provisions and remaining utility charges. Neither free electricity nor guaranteed savings follows from a no-upfront offer.
Bring roof photos, collector records and your electricity bill to a West Coast Alternatives consultation to discuss a proposal that accounts for both systems.