How many battery storage projects are planned in California?

Developers have proposed 439 battery storage projects in California with 106 GW of capacity, according to the grid operators' interconnection queues. Most queue projects are never built.

What is the largest planned battery storage project in California?

Wingtip Solar 1 in Merced County, California is the largest planned, at 1,176 MW. It is expected to come online in 2032.

Who is developing battery storage projects in California?

Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.

Planned battery storage projects in California

Developers have proposed 439 battery storage projects in California with 106 GW of capacity, in the grid operators' interconnection queues.

Planned439

See operating battery storage projects in California

Updated monthly. Last updated November 2026.

Under 50 MW50–249 MW250 MW and up

Updated monthly. Last updated November 2026.

More planned battery storage projects in California are expected online in 2027 than in any other year

2026’262027’272028’282029’292030’302031’312032’322033’33

Planned battery storage projects by the year they're expected online. Source: the grid operators' interconnection queues, compiled by Cleanview.

The 10 largest planned battery storage projects in California

Planned, by capacity

#	Battery storage project	County	Expected online	Capacity
1	Wingtip Solar 1	Merced County	2032	1,176 MW
2	Quark	Fresno County	2028	1,175 MW
3	Boson	Kern County	2028	1,173 MW
4	Muon	Fresno County	2028	1,170 MW
5	Pion	Fresno County	2028	1,168 MW
6	Angeleno Solar Farm	Los Angeles County	2028	1,150 MW
7	Darden	Fresno County	2027	1,150 MW
8	Umbriel	Imperial County	2033	1,150 MW
9	Hillside Energy Storage	Los Angeles County	2029	1,065 MW
10	Crusade	Orange County	2028	1,029 MW

Planned battery storage projects expected online soonest in California

In the next 18 months, soonest first

#	Battery storage project	County	Expected online	Capacity
1	Sanborn Hybrid 3	Kern County	2026	672 MW
2	Bellefield 2 Solar & Energy Storage Farm	Kern County	2026	500 MW
3	Sanborn Hybrid 3	Kern County	2026	210 MW
4	Sonrisa	Fresno County	2026	184 MW
5	Vidal Energy Center	San Bernardino County	2026	160 MW
6	Reclaimed Wind	Alameda County	2026	114 MW
7	Aratina Solar Center 2	Kern County	2026	113 MW
8	Aratina Solar Center 2	Kern County	2026	113 MW
9	Westminster Reliability Project, LLC	Orange County	2026	110 MW
10	Huaso Hybrid	Fresno County	2026	102 MW

The developer behind each project is on paid plans. See plans

How Cleanview tracks battery storage projects

Operating battery storage projects come from the EIA's monthly survey of power plants. Planned projects come from the grid operators' interconnection queues. We research who is developing each one, since a queue lists a project company, not its owner.

Questions about battery storage projects in California

How many battery storage projects are planned in California?: Developers have proposed 439 battery storage projects in California with 106 GW of capacity, according to the grid operators' interconnection queues. Most queue projects are never built.
What is the largest planned battery storage project in California?: Wingtip Solar 1 in Merced County, California is the largest planned, at 1,176 MW. It is expected to come online in 2032.
Who is developing battery storage projects in California?: Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.