Solar + Battery Storage
Solar paired with home battery storage for backup power and time-of-use savings.
Solar + battery installations pair rooftop PV with a Tesla Powerwall, Enphase IQ Battery, FranklinWH, or similar storage unit. The battery captures excess midday production for evening use — critical in states with time-of-use rates or limited net metering (California NEM 3.0, Arizona, Nevada). Batteries also provide whole-home or partial-home backup during outages. Sizing matters: most homes want 1.5–2x daily evening load in storage.
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FAQ
Is the federal tax credit on battery storage?+
Yes — the 30% federal Residential Clean Energy Credit applies to standalone batteries 3+ kWh as of 2023, and to batteries paired with solar. Many states (CA SGIP, MA Connected Solutions, NY) offer additional rebates.
How long does a battery last during a power outage?+
A typical 13.5 kWh battery (Powerwall 3, Enphase IQ 10) backs up essential loads (lights, fridge, internet, modest HVAC) for ~12–24 hours. Whole-home backup with full HVAC is closer to 4–8 hours unless paired with solar recharging during the day.
How much does battery storage add to a solar install?+
A single battery typically adds $13,000–$18,000 before incentives. After the federal 30% ITC and any state rebate, net cost is usually $8,000–$12,000.