Solar Battery Prices: Is It Worth Buying a Battery in
On average, it costs around $1,300 per kWh to install a battery before incentives. With the 30% federal tax credit applied, the cost is closer to
The exact amount depends on how much work your solar installer needs to do, like connecting the battery to your solar panels or setting up multiple batteries. This can vary from one homeowner to another. Most homeowners pay between $6,000 and $12,000 for a solar storage system, including the battery and installation.
Two cabinets can connect to a single inverter for up to 36 kWh total backup power. Whole-house solar battery backup costs $20,000 to $32,000 installed, not including solar panels. The average home uses 28 to 30 kWh per day, requiring batteries with at least that total capacity or more to power the entire home for one day.
The guide below shares the best solar batteries and installation fees, plus their long-term savings potential. Solar batteries cost an average of $10,000–$19,000 in addition to installation costs. You may need multiple batteries to power your whole house with solar batteries.
While prices for solar batteries in 2025 range widely from around $7,000 to $15,000 installed, the long-term benefits can outweigh the initial expense. A battery allows you to store excess solar energy for nighttime use, reduce your reliance on the grid, and maintain power during outages.
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