How many battery storage projects are planned in Oklahoma?

Developers have proposed 60 battery storage projects in Oklahoma with 8.9 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 Oklahoma?

Elgin Battery/Storage in Elgin County, Oklahoma is the largest planned, at 500 MW. It is expected to come online in 2028.

Who is developing battery storage projects in Oklahoma?

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 Oklahoma

Developers have proposed 60 battery storage projects in Oklahoma with 8.9 GW of capacity, in the grid operators' interconnection queues.

Planned60

See operating battery storage projects in Oklahoma

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 Oklahoma are expected online in 2028 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 Oklahoma

Planned, by capacity

#	Battery storage project	County	Expected online	Capacity
1	Elgin Battery/Storage	Elgin County	2028	500 MW
2	Balko Battery/Storage	Balko County	2027	263 MW
3	Mill Creek Battery/Storage	Mill Creek County	2028	258 MW
4	Tulsa Battery/Storage	Tulsa County	2028	250 MW
5	Morrison Battery/Storage	Morrison County	2026	220 MW
6	Oakwood Battery/Storage	Oakwood County	2027	209 MW
7	Solstice Solar LLC	Le Flore County	2029	200 MW
8	Willow Creek Energy Storage	Pawnee County	2026	200 MW
9	Tulsa Battery/Storage	Tulsa County	2028	200 MW
10	Marshall Battery/Storage	Marshall County	2028	200 MW

Planned battery storage projects expected online soonest in Oklahoma

In the next 18 months, soonest first

#	Battery storage project	County	Expected online	Capacity
1	Morrison Battery/Storage	Morrison County	2026	220 MW
2	Willow Creek Energy Storage	Pawnee County	2026	200 MW
3	Duncan Battery/Storage	Duncan County	2026	200 MW
4	Minco Battery/Storage	Minco County	2026	200 MW
5	Fort Gibson Battery/Storage	Fort Gibson County	2026	102 MW
6	Oologah Battery/Storage	Oologah County	2026	100 MW
7	Oklahoma Battery/Storage	Oklahoma County	2027	100 MW
8	Sayre Battery/Storage	Sayre County	2027	100 MW
9	Kay Battery/Storage	Kay County	2027	50 MW
10	Blaine Battery/Storage	Blaine County	2027	75 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 Oklahoma

How many battery storage projects are planned in Oklahoma?: Developers have proposed 60 battery storage projects in Oklahoma with 8.9 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 Oklahoma?: Elgin Battery/Storage in Elgin County, Oklahoma is the largest planned, at 500 MW. It is expected to come online in 2028.
Who is developing battery storage projects in Oklahoma?: 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.