How many battery storage projects are in PJM?

PJM has 42 operating utility-scale battery storage projects with 0.7 GW of capacity, according to the EIA's monthly survey of power plants.

What is the largest battery storage project in PJM?

Prospect Power BESS in Rockingham County, Virginia is the largest, at 150 MW. It came online in 2026.

How many battery storage projects were built in PJM in 2025?

4 battery storage projects came online in PJM in 2025, with 101 MW of capacity.

Who is developing battery storage projects in PJM?

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.

Battery storage projects in PJM

PJM has 42 operating battery storage projects with 0.7 GW of capacity. 4 came online in 2025.

Operating42

See planned battery storage projects in PJM

Updated monthly. Last updated November 2026.

Under 50 MW50–249 MW250 MW and up

Updated monthly. Last updated November 2026.

PJM had 11 battery storage projects online in 2016 and 42 in 2026

2016’162017’172018’182019’192020’202021’212022’222023’232024’242025’252026’26

Battery storage projects online at the end of each year. Source: EIA-860M, compiled by Cleanview.

The 10 largest battery storage projects in PJM

Operating, by capacity

#	Battery storage project	Location	Year online	Capacity
1	Prospect Power BESS	Rockingham County, Virginia	2026	150 MW
2	BHER Ravenswood Solar 1	Jackson County, West Virginia	2025	79 MW
3	Scott Solar Farm	Powhatan County, Virginia	2022	40 MW
4	Grand Ridge Battery Projects	LaSalle County, Illinois	2015	36 MW
5	Beech Ridge Energy Storage	Greenbrier County, West Virginia	2015	32 MW
6	FPL Energy Illinois Wind LLC Hybrid	DeKalb County, Illinois	2014	20 MW
7	Hazle Spindle	Luzerne County, Pennsylvania	2013	20 MW
8	McHenry Battery Storage	McHenry County, Illinois	2016	20 MW
9	Marengo Battery Storage LLC	McHenry County, Illinois	2018	20 MW
10	Dry Bridge Storage	Chesterfield County, Virginia	2023	20 MW

Battery storage projects that came online most recently in PJM

Newest first

#	Battery storage project	Location	Year online	Capacity
1	Prospect Power BESS	Rockingham County, Virginia	2026	150 MW
2	South River 2	Middlesex County, New Jersey	2026	10 MW
3	BHER Ravenswood Solar 1	Jackson County, West Virginia	2025	79 MW
4	KSU Solar Array	Portage County, Ohio	2025	2 MW
5	Shelby BESS	Richland County, Ohio	2025	10 MW
6	South River BESS Phase 1	Middlesex County, New Jersey	2025	10 MW
7	Montague Energy Storage	Sussex County, New Jersey	2024	20 MW
8	Davistown-Mercer	Edgecombe County, North Carolina	2024	3 MW
9	Medoc	Halifax County, North Carolina	2024	3 MW
10	Fairhaven	Anne Arundel County, Maryland	2024	3 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 PJM

How many battery storage projects are in PJM?: PJM has 42 operating utility-scale battery storage projects with 0.7 GW of capacity, according to the EIA's monthly survey of power plants.
What is the largest battery storage project in PJM?: Prospect Power BESS in Rockingham County, Virginia is the largest, at 150 MW. It came online in 2026.
How many battery storage projects were built in PJM in 2025?: 4 battery storage projects came online in PJM in 2025, with 101 MW of capacity.
Who is developing battery storage projects in PJM?: 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.