Home Battery Storage Cost
Compare solar battery prices by brand and see your estimated payback period.
| Battery | Capacity | Power Output | Installed Cost | After 30% ITC | Warranty |
|---|---|---|---|---|---|
| Tesla Powerwall 3 | 13.5 kWh | 11.5 kW cont. | $9,200–$11,500 | $6,440–$8,050 | 10 yr / unlimited cycles |
| Enphase IQ Battery 5P | 5.0 kWh (stackable) | 3.84 kW cont. | $4,800–$6,200 | $3,360–$4,340 | 15 yr |
| LG RESU Prime 16H | 16.0 kWh | 7.0 kW cont. | $10,500–$13,000 | $7,350–$9,100 | 10 yr |
| Franklin Electric aGES | 13.6 kWh | 10.0 kW cont. | $9,000–$11,000 | $6,300–$7,700 | 12 yr |
| Generac PWRcell | 9–18 kWh (modular) | 3.4–6.7 kW cont. | $10,000–$16,000 | $7,000–$11,200 | 10 yr |
Battery Payback Calculator
Food spoilage, hotel costs, generator rental avoided. Typical: $200–$600/yr for 3–5 outages.
Annual TOU Savings
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How to Evaluate Battery Storage Costs
Solar battery storage costs $10,000–$15,000 installed for a 10–13 kWh system like the Tesla Powerwall. California incentives reduce this by $2,000–$4,000 through the SGIP program. In states with strong net metering, batteries add less financial value — the payback case improves most in states with time-of-use rates or frequent outages.
The sticker price comparison on home batteries is misleading without adjusting for capacity. The Tesla Powerwall 3 at $9,200–$11,500 installed stores 13.5 kWh. The Enphase IQ Battery 5P at $4,800–$6,200 stores only 5 kWh. To compare them fairly: Powerwall runs about $680–$850/kWh of storage. Enphase IQ 5P runs $960–$1,240/kWh. The Powerwall is cheaper per kilowatt-hour of storage. Where Enphase wins is modular expansion (add one module at a time) and the ecosystem fit if you already have Enphase microinverters.
Time-of-use arbitrage is the clearest financial case for batteries. California, Hawaii, Massachusetts, New York, and Connecticut all have TOU rate structures where peak power costs $0.35–$0.55/kWh and off-peak power costs $0.10–$0.18/kWh. A battery charged from solar during the day and discharged during evening peak hours can capture $0.25–$0.35/kWh of savings per cycle. A 13.5 kWh Powerwall cycled 250 days per year at $0.30/kWh arbitrage value saves $1,012/year. At that rate, a $7,000 net-cost battery pays back in under 7 years.
The federal 30% Investment Tax Credit applies to standalone battery storage as of 2023—you no longer need solar panels to claim the credit. A $10,000 battery with installation qualifies for a $3,000 tax credit. This significantly improved the economics of battery-only installations for homes that already have solar but weren't sold a battery at installation time.
Some states add additional incentives on top of the federal credit. California's SGIP (Self-Generation Incentive Program) offers $200–$1,000/kWh rebates in disadvantaged communities, effectively cutting battery costs in half. New York's Con Edison customers can participate in demand response programs that pay $200–$500/year for allowing the utility to briefly discharge your battery during grid stress events. Massachusetts offers MassSave rebates of $1,000–$2,000 on battery storage. Always check your utility's programs before buying.
Battery pricing from manufacturer MSRPs and 2025 installer quotes. Federal ITC at 30% applies through 2032 per Inflation Reduction Act. State incentives vary and change annually — verify current programs at your state energy office or with a local installer.