A solar battery storage system costs between $10,000 and $20,000. With a 30% tax credit, a 12. Battery installation adds an extra. Home energy storage costs typically depend on storage capacity, chemistry, and integration with your solar system. The price range reflects variations in hardware, installation, and local incentives. The value. In 2025, the typical cost of a commercial lithium battery energy storage system, which includes the battery, battery management system (BMS), inverter (PCS), and installation, is in the following range: $280 - $580 per kWh (installed cost), though of course this will vary from region to region. A solar battery costs $8,000 to $16,000 installed on average before tax credits.