Armstrong County, PA power plants

7 EIA-registered plants with 2.6 GW of nameplate capacity inside PJM; the largest is Keystone at 1,872 MW.

Capacity by fuel

Nameplate capacity · plants

coal: 1.9 GW1
natural gas: 688 MW1
hydroelectric: 55.8 MW5

Armstrong County, PA capacity ranking

7 matching plants · ranked by nameplate capacity

Rank	Plant	Capacity	Type	Operator	Location
1	KeystoneKeyCon Operating LLCDetailed profile	1,872 MW	Conventional Steam Coal	KeyCon Operating LLC	Armstrong County
2	ArmstrongArmstrong Power LLCDetailed profile	688 MW	Natural Gas Fired Combustion Turbine	Armstrong Power LLC	Armstrong County
3	Allegheny Hydro No 9Allegheny Hydro LP	17.8 MW	Conventional Hydroelectric	Allegheny Hydro LP	Armstrong County
4	Allegheny Hydro No 8Allegheny Hydro LP	13.6 MW	Conventional Hydroelectric	Allegheny Hydro LP	Armstrong County
5	Allegheny No 6 Hydro StationEagle Creek Renewable Energy, LLC	9.2 MW	Conventional Hydroelectric	Eagle Creek Renewable Energy, LLC	Armstrong County
6	Allegheny No. 5 Hydro StationEagle Creek Renewable Energy, LLC	9.2 MW	Conventional Hydroelectric	Eagle Creek Renewable Energy, LLC	Armstrong County
7	Mahoning Creek Hydroelectric ProjectEagle Creek Renewable Energy, LLC	6 MW	Conventional Hydroelectric	Eagle Creek Renewable Energy, LLC	Armstrong County

Other PJM counties

plants

County assignment and capacity come from the EIA generator inventory. Capacity is nameplate capacity, not seasonal capability or available operating capacity. A plant can include multiple generators and technologies.