Store your solar. Beat the 4–9 PM peak.

It varies with quantity and your electrical setup; your proposal gives an exact itemized number. On a $0-down lease/PPA the battery can be one monthly payment.

Solar battery installation cost depends on the battery (Powerwall 3 or Enphase IQ Battery 10C), how many units you need, and your electrical panel — so we give you an exact, itemized price in your proposal rather than a misleading flat figure. On a $0-down lease or PPA the battery folds into one monthly payment, and adding a battery to existing solar is one of the most common installs we do.

Often yes — a single Powerwall 3 (11.5 kW, 13.5 kWh) backs up most small-to-medium homes; larger homes usually pair 2–3 units. We design for whole-home or essential-loads backup based on your real loads.

Powerwall 3 is an all-in-one unit with a built-in solar inverter and high continuous output. The Enphase IQ Battery 10C is a 10 kWh AC-coupled LFP system with four built-in grid-forming microinverters that pairs with new or existing solar. Both are excellent — we'll match the right one to your home.

Yes — Enphase IQ Battery AC-couples to most existing systems regardless of who installed them, and we retrofit Powerwall onto many setups after confirming compatibility. It's one of the most common upgrades we do for homeowners whose solar predates NEM 3.0 economics, and it works even if your original installer is no longer in business.

It depends on what you back up. A Powerwall 3 stores 13.5 kWh and delivers 11.5 kW of continuous power — enough to run most homes — so essentials-only backup stretches far longer than whole-home use with air conditioning running. Paired with solar, the battery recharges each day, so backup isn't limited to a single charge. Storm Watch even pre-charges before forecast outages.

Powerwall 3 carries a 10-year warranty with unlimited cycles and at least 70% capacity retained — note that it requires the unit to stay internet-connected. The Enphase IQ Battery 10C carries a 15-year warranty at 6,000 cycles and at least 60% capacity retained. We'll walk you through what each actually covers before you sign anything.

Mostly no. SGIP's general-market budgets largely closed at the end of 2025, leaving only limited income-qualified pathways for eligible households. We'll check your eligibility honestly rather than build a quote on a rebate you can't get — and the battery's case stands on its own: time-of-use savings during the 4–9 PM peak plus backup power through outages.

Yes — the IQ Battery 10C uses cobalt-free lithium iron phosphate (LFP) chemistry with excellent thermal stability, is UL 9540A evaluated, and cools passively with no fans, running under 33 dBA in an outdoor-rated NEMA 3R enclosure.

OC Solar does — we're certified on both the Tesla and Enphase ecosystems, which is rarer than it sounds: most installers commit to a single brand. The IQ Battery 10C is a 10 kWh AC-coupled LFP battery with a 15-year warranty that pairs with new or existing solar, and because we install Powerwall 3 too, our recommendation is based on your home — not on the only product we carry. For the full head-to-head, see our Enphase IQ Battery 10C vs Powerwall 3 comparison guide.