As of September 2026, the average storage system cost in California is $1,074/kWh. Given a storage system size of 13 kWh, an average storage installation in California ranges in cost from $11,864 to $16,052, with the average gross price for storage in California coming in at $13,958. After accounting for state and local storage incentives, the net price you'll pay for solar can fall by thousands of dollars.
Importantly, these costs are typical for shoppers comparing storage quotes on the EnergySage Marketplace. When you compare quotes for solar panels and batteries on EnergySage's competitive marketplace, you can expect to see prices up to 20% lower than working with a single company.
System size | System cost |
|---|---|
10 kWh | $10,737 |
13 kWh | $13,958 |
20 kWh | $21,474 |
26 kWh | $27,916 |
Learn more about local CA incentives, tax credits & rebates.
$18,057 - $52,316
There are several variables that impact the price you pay for a solar + storage system: the quality of the equipment you install, the type of inverters you choose, and the storage capacity and chemistry of your battery. This is an average price range for solar + storage installations in your area, and the specifics of your project will change the final price you pay.
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See what storage costs in California counties
- Alameda County
- Amador County
- Butte County
- Calaveras County
- Colusa County
- Contra Costa County
- Del Norte County
- El Dorado County
- Fresno County
- Glenn County
- Humboldt County
- Imperial County
- Inyo County
- Kern County
- Kings County
- Lake County
- Lassen County
- Los Angeles County
- Madera County
- Marin County
- Mariposa County
- Mendocino County
- Merced County
- Mono County
- Monterey County
- Napa County
- Nevada County
- Orange County
- Placer County
- Plumas County
- Riverside County
- Sacramento County
- San Benito County
- San Bernardino County
- San Diego County
- San Francisco County
- San Joaquin County
- San Luis Obispo County
- San Mateo County
- Santa Barbara County
- Santa Clara County
- Santa Cruz County
- Shasta County
- Sierra County
- Siskiyou County
- Solano County
- Sonoma County
- Stanislaus County
- Sutter County
- Tehama County
- Tulare County
- Tuolumne County
- Ventura County
- Yolo County
- Yuba County
Sigenergy Sigen Battery 9
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Enphase Energy " IQ Battery 10C"
Tesla PowerWall 3 + 1 Expansion Pack
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