KEYSTONE

How KEYSTONE compares

With 1,884 MW of capacity, KEYSTONE ranks 4th among the 170 operating power plants Bywatts maps in Pennsylvania and is the largest of the 20 operating Coal plants in the state. It accounts for about 18% of Pennsylvania's operating Coal capacity and 4.8% of all operating capacity in the state. Nationally it is the 39th-largest of the 324 operating Coal plants in the database. Commissioned in 1967, it is older than 88% of the 168 operating Pennsylvania plants with a recorded commissioning year. Its operator, GENON NORTHEAST MANAGEMENT COMPANY, runs 2 operating plants in Pennsylvania totaling 3,768 MW. It shares Armstrong County with 5 other operating plants, including ARMSTRONG and ALLEGHENY HYDRO NO 9.

EIA-860 lists 6 generators at the site with 1,883 MW of nameplate capacity, mainly conventional steam coal technology. Net generation was 3,042 GWh in 2024 (an 18% capacity factor), down 40% from 2022. Its generators came online between 1967 and 1968.

Grid neighborhood

The nearest named substation is KEYSTONE (500 kV), about 0.2 miles away; the closest transmission line found within 10 miles is a 500 kV line owned by WEST PENN POWER CO, under 0.1 miles away. Another 11 operating power plants totaling 3,890 MW sit within 25 miles; the largest is CONEMAUGH (1,884 MW, Coal). Within 50 miles are 2 mapped data centers; the nearest is Crown Castle Pittsburgh (Allegheny Center Mall) in Pittsburgh, about 37.7 miles away.

Computed by Bywatts from HIFLD power plant, substation and transmission line records, EIA-860/923 survey data and PeeringDB data center locations; distances are straight-line. Sources and methodology