Solar Battery Prices: Is It Worth Buying a Battery in 2026?
A report from the National Renewable Energy Laboratory (NREL) estimates that a solar battery including installation can cost
Most solar battery storage systems cost $10,000 on average, with most ranging between $6,000 and $12,000. Prices range from $400 for small units to over $20,000 for larger systems. Key cost factors include battery type, capacity, installation labor, and additional equipment.
A report from the National Renewable Energy Laboratory (NREL) estimates that a solar battery including installation can cost almost $19,000* to install, including the price of the battery itself and labor. Installation and permitting fees vary by location and installer, but the NREL estimates the battery itself typically costs $16,007.
The downside is interest payments on the loan accrue over time to increase the overall cost of the system. For example, using the example from earlier, financing a 7.9 kW solar system and 12.5 kWh battery with a 20-year loan (with zero money down) would cost nearly $47,000 while paying cash would cost around $30,000.
Whether you're ready to take your love of reusable batteries to the next level or make use of that excess solar energy your solar panels generate, investing in a solar battery system is a great way to harness the power of the sun for free electricity. But before you can start saving, you'll need to budget for the cost of a solar battery system.
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