How Much Do Solar Batteries Cost in 2025?
Adding a solar battery to an existing solar panel system typically doesn''t cost much more than including it during a new
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 cost to hire a local solar company to inspect and maintain your battery system is anywhere between $150 and $300 on average. Solar batteries last longer when you maintain them regularly. Maintenance includes an inspection, rotating the batteries, and cleaning the terminals.
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.
If you're installing a solar battery system away from electrical wiring and outlets, then you may end up paying $6 to $10 per square foot to hire a local electrician to rewire your house. Generally, simple rewiring projects cost around $1,500.
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