Cost of Battery Storage Per kWh: 2026 Pricing Guide
The cost of battery storage per kWh ranges from $700 to $1,300 installed for residential systems and $125 to $334 for utility-scale projects as of late 2025. Battery pack
If you just want to back up a few critical loads, your solar battery cost will be lower. But if you're looking to back up your whole home or go off-grid, expect to pay a lot for battery storage —we're talking about $25,000 to $40,000, on average. Compared to solar panel systems, batteries are less customizable in terms of size.
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.
Solar battery storage capacity typically ranges from 3 kWh to 20 kWh, depending on the model and manufacturer. The higher the storage capacity, the more electricity the battery can hold for use during outages or after sunset. However, more storage comes with a higher price tag.
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.
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