How many battery storage projects are planned in PJM?

Developers have proposed 199 battery storage projects in PJM with 35 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 PJM?

Aurora E.C. 138kV is the largest planned, at 1,206 MW. It is expected to come online in 2025.

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.

Planned battery storage projects in PJM

Developers have proposed 199 battery storage projects in PJM with 35 GW of capacity, in the grid operators' interconnection queues.

Planned199

See operating 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.

More planned battery storage projects in PJM are expected online in 2029 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 PJM

Planned, by capacity

#	Battery storage project	Location	Expected online	Capacity
1	Aurora E.C. 138kV	Illinois	2025	1,206 MW
2	Marysville-Flatlick 765 kV	Madison County, Ohio	–	800 MW
3	Marysville-Flatlick 765 kV	Madison County, Ohio	–	800 MW
4	Jefferson-Greentown 765 kV	Decatur County, Indiana	2024	715 MW
5	Surry-Skiffes Creek 500kV	James City, Virginia	2029	650 MW
6	Surry-Skiffes Creek 500kV	James City, Virginia	–	650 MW
7	Zion Energy Center - BESS	Lake County, Illinois	2029	635 MW
8	Dumont - Greentown 765 kV	Marshall County, Indiana	2024	600 MW
9	Silver Lake 345 kV	McHenry County, Illinois	2024	600 MW
10	Silver Lake 345 kV	McHenry County, Illinois	–	600 MW

Planned battery storage projects expected online soonest in PJM

In the next 18 months, soonest first

#	Battery storage project	Location	Expected online	Capacity
1	Drake Storage	Middlesex County, Virginia	2026	40 MW
2	Houses Corner Storage	Sussex County, New Jersey	2026	20 MW
3	Flint Grid	Licking County, Ohio	2027	200 MW
4	New Road Storage	Loudoun County, Virginia	2027	120 MW
5	Dulles Solar and BESS	Loudoun County, Virginia	2027	150 MW
6	Bluestem Solar	LaPorte County, Indiana	2027	305 MW
7	Twin Groves Storage I	McLean County, Illinois	2028	248 MW
8	Twin Groves Storage II	McLean County, Illinois	2028	248 MW
9	Threeforks Energy Storage	Martin County, Kentucky	2028	100 MW
10	Ocean Court 230 kV	Loudoun County, Virginia	2028	100 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 planned in PJM?: Developers have proposed 199 battery storage projects in PJM with 35 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 PJM?: Aurora E.C. 138kV is the largest planned, at 1,206 MW. It is expected to come online in 2025.
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.