How many battery storage projects are planned in the US?

Developers have proposed 2,489 battery storage projects in the US with 463 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 the US?

Atlas Complex in La Paz County, Arizona is the largest planned, at 2,171 MW. It is expected to come online in 2028.

Who is developing battery storage projects in the US?

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 the United States

Developers have proposed 2,489 battery storage projects in the US with 463 GW of capacity, in the grid operators' interconnection queues.

Planned2,489

See operating battery storage projects in the US

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 the US are expected online in 2028 than in any other year

255

505

682

459

209

104

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 the US

Planned, by capacity

#	Battery storage project	Location	Expected online	Capacity
1	Atlas Complex	La Paz County, Arizona	2028	2,171 MW
2	Aurora E.C. 138kV	Illinois	2025	1,206 MW
3	Sunstone Solar	Morrow County, Oregon	2027	1,200 MW
4	Wingtip Solar 1	Merced County, California	2032	1,176 MW
5	Quark	Fresno County, California	2028	1,175 MW
6	Boson	Kern County, California	2028	1,173 MW
7	Muon	Fresno County, California	2028	1,170 MW
8	Pion	Fresno County, California	2028	1,168 MW
9	Angeleno Solar Farm	Los Angeles County, California	2028	1,150 MW
10	Darden	Fresno County, California	2027	1,150 MW

Planned battery storage projects expected online soonest in the US

In the next 18 months, soonest first

#	Battery storage project	Location	Expected online	Capacity
1	Sanborn Hybrid 3	Kern County, California	2026	672 MW
2	Maricopa Solar	Maricopa County, Arizona	2026	550 MW
3	Avalon BESS	Fort Bend County, Texas	2026	522 MW
4	Betel Storage II	Milam County, Texas	2026	500 MW
5	Bellefield 2 Solar & Energy Storage Farm	Kern County, California	2026	500 MW
6	Quantum II BESS	Haskell County, Texas	2026	422 MW
7	Tehuacana Creek Solar	Navarro County, Texas	2026	418 MW
8	Oxford Battery/Storage	Oxford County, Kansas	2026	300 MW
9	Zeya	Galveston County, Texas	2026	250 MW
10	Dry Land Prairie Energy Storage	Cheyenne County, Colorado	2026	250 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 the US

How many battery storage projects are planned in the US?: Developers have proposed 2,489 battery storage projects in the US with 463 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 the US?: Atlas Complex in La Paz County, Arizona is the largest planned, at 2,171 MW. It is expected to come online in 2028.
Who is developing battery storage projects in the US?: 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.