How many battery storage projects are planned in Pennsylvania?

Developers have proposed 20 battery storage projects in Pennsylvania with 2.6 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 Pennsylvania?

Lewis Run - Pierce Brook 230 kV in McKean County, Pennsylvania is the largest planned, at 410 MW. It is expected to come online in 2024.

Who is developing battery storage projects in Pennsylvania?

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 Pennsylvania

Developers have proposed 20 battery storage projects in Pennsylvania with 2.6 GW of capacity, in the grid operators' interconnection queues.

Planned20

See operating battery storage projects in Pennsylvania

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 Pennsylvania 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 Pennsylvania

Planned, by capacity

#	Battery storage project	County	Expected online	Capacity
1	Lewis Run - Pierce Brook 230 kV	McKean County	2024	410 MW
2	Shallow Seam BESS	Clearfield County	2029	400 MW
3	Pierce Brook - Lewis Run 230 kV	McKean County	2024	240 MW
4	Pierce Brook-Lewis Run 230kV	McKean County	2024	200 MW
5	Lewis Run - Pierce Brook 230 kV	McKean County	–	170 MW
6	Energy Mountain	Bucks County	2029	150 MW
7	Hoytdale 138 kV	Beaver County	2023	150 MW
8	Hoytdale 138 kV	Beaver County	–	150 MW
9	Lardin – Lake Lynn 138kV	Fayette County	2024	145 MW
10	Lardin - Lake Lynn 138kV	Fayette County	–	145 MW

Planned battery storage projects expected online soonest in Pennsylvania

In the next 18 months, soonest first

#	Battery storage project	County	Expected online	Capacity
1	PF Onsite BESS	Luzerne County	2027	21 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 Pennsylvania

How many battery storage projects are planned in Pennsylvania?: Developers have proposed 20 battery storage projects in Pennsylvania with 2.6 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 Pennsylvania?: Lewis Run - Pierce Brook 230 kV in McKean County, Pennsylvania is the largest planned, at 410 MW. It is expected to come online in 2024.
Who is developing battery storage projects in Pennsylvania?: 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.