How Much Do Solar Batteries Cost? (2025 Guide)
A report from the National Renewable Energy Laboratory (NREL) estimates that a solar battery including installation can cost
Adding a solar battery to an existing solar panel system typically doesn't cost much more than including it during a new installation. However, there may be additional retrofitting costs, such as resolving compatibility issues or upgrading your inverter to a battery-ready model.
The average cost to install a solar battery in 2025 ranges from $9,000 to $19,000, with most homeowners spending about $13,000. The total price depends mainly on the type and capacity of the battery, as well as the complexity of your system.
The lifespan of solar backup batteries varies based on the type of battery and how it is used. Lithium-ion batteries, the most common solar battery type, typically last between 10 and 15 years. What happens to solar power when batteries are full?
Investing in a solar battery can significantly add to the cost of your solar energy system. Solar batteries are valuable additions to solar systems, storing excess power for later use, maximizing your energy use, and cutting your electricity bills.
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