Solar batteries for California homes, one expert match.

Nothing. The installer pays us a flat referral fee. That fee is the same whether you buy a $9,000 home battery or a $24,000 stack, so we have no incentive to upsell you.

No. Your information goes to one home battery installer (the one we match you with) and nowhere else. No marketing partners, no resellers, no follow-up “you’ve been pre-approved” calls.

Great. Send it over. We’ll either confirm it’s a fair deal or tell you where it’s off. No charge either way.

Your home’s electrical service, your reason for backup, your existing solar (if any), and your roof or wall layout. The right answer is rarely the biggest box.

No. We are a private company, WattKeeper LLC doing business as Solar Battery USA. We are not a government program, a utility, or a state agency.

A human reads your application within two business days, calls you to confirm the details, and emails one home battery installer match with an introduction. You take it from there or you don’t.

A single-unit home battery typically runs $9,000 to $17,000 installed for a 10-15 kWh system, before incentives. A whole-home stack of two or three units runs $20,000 to $35,000. The 30% federal tax credit through 2032 takes thousands off the real cost, and state rebates (SGIP in California) can drop it further. We match you with an installer who’ll give you a written quote. There are no fees on our end.

Most modern home batteries use LFP (lithium iron phosphate) chemistry and come with 10- to 15-year warranties. They’re rated for 4,000 to 15,000 charge cycles. Real-world expectancy is 10-15 years of useful life before significant capacity loss. Sonnen’s evo carries a 15,000-cycle warranty, the longest in the category. Tesla’s Powerwall 3 and FranklinWH’s aPower 2 both come with 10-year warranties.

Yes, if it’s installed correctly. A “grid-tied” battery without backup configuration shuts off during an outage for utility-worker safety. A properly-installed battery with a critical-loads panel or whole-home transfer switch will island your home from the grid and keep your circuits running. Every installer we match you with has done islanding-mode commissioning on the chemistry they’re recommending.

Most California homeowners do. The Self-Generation Incentive Program covers a meaningful chunk of battery cost, with larger rebates for medically-vulnerable households and high-fire-threat districts. The installer we match you with handles the paperwork. We confirm eligibility before the introduction so you know what to expect.

Under NEM 3.0, the credit utilities pay you for exporting solar dropped roughly 75% from NEM 2.0 levels. A battery flips that math: you store your daytime production and use it at peak (4–9pm) when retail rates are highest. For most new California solar customers, the battery is the part that makes the system pay back.

Tesla Powerwall 3, Enphase IQ Battery 10C, FranklinWH aPower 2, Sonnen evo, LG Chem Prime, and most other Tier-1 LFP and NMC home batteries are SGIP-eligible. The CPUC publishes the full equipment list quarterly. Your installer confirms eligibility on the specific model being quoted before SGIP paperwork is filed.

It depends on the battery capacity and how your critical loads are wired. A single 13.5 kWh battery can typically run essentials (refrigerator, lights, plugs, internet, a few rooms) for 12 to 24 hours. A two- or three-battery stack with whole-home transfer switch can carry the entire house, including AC, for a full multi-day PSPS event. We confirm sizing during the application review.

Yes. Every California home battery install requires an electrical permit from your local Authority Having Jurisdiction (AHJ), an interconnection approval from your utility, and a final inspection. Your installer pulls all of these. Most county AHJs (LA, San Diego, Santa Clara, Sacramento) issue residential battery permits within 1 to 4 weeks. Some smaller counties run faster.