Solar battery cost calculator
Estimate what a home battery costs after the 30% federal credit — and how long it keeps your essentials running in an outage.
Estimate your battery cost
Two inputs. We use the US average installed price (~$1,150/kWh) and the 30% federal credit.
Essentials (fridge, lights, internet, a few outlets) run ~8–12 kWh/day. Whole-home is ~25–30 kWh/day.
How much do solar batteries cost?
A home battery runs about $1,000–$1,200 per kWh installed before incentives — roughly $10,000–$15,000 for a typical 10–13 kWh unit. Since 2023 the 30% federal tax credit covers standalone storage, even if you add it after your panels, which brings the net cost down by nearly a third.
Whether a battery is "worth it" depends on your goal: buy it for backup during outages or to dodge peak time-of-use rates. If your grid is reliable and you have strong net metering, panels alone usually give the faster payback.
Read: Is a solar battery worth it? → Solar savings calculator →
Backup & monitoring gear
- Home energy monitors — see exactly how much you use so you can size storage right.
- Portable power stations — a budget way to back up essentials without a full install.
- Whole-house surge protectors — protect your system and appliances.
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