MUDDY RUN

How MUDDY RUN compares

With 1,072 MW of capacity, MUDDY RUN ranks 12th among the 170 operating power plants Bywatts maps in Pennsylvania and is the largest of the 18 operating Hydro plants in the state. It accounts for about 46% of Pennsylvania's operating Hydro capacity and 2.7% of all operating capacity in the state. Nationally it is the 14th-largest of the 1,243 operating Hydro 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, EXELON POWER, runs 11 operating plants in Pennsylvania totaling 2,992 MW. It shares Lancaster County with 10 other operating plants, including SAFE HARBOR and PPL HOLTWOOD.

EIA-860 lists 8 generators at the site with 1,072 MW of nameplate capacity, all hydroelectric pumped storage technology. The plant was a net consumer of electricity in 2024 (-443 GWh), which is typical of pumped storage. Its generators came online between 1967 and 1968.

Grid neighborhood

The nearest named substation is PEACH BOTTOM (500 kV), about 3.4 miles away; the closest transmission line found within 10 miles is a 230 kV line owned by PPL ELECTRIC UTILITIES CORP, under 0.1 miles away. Another 14 operating power plants totaling 4,797 MW sit within 25 miles; the largest is PEACH BOTTOM (2,319 MW, Nuclear). Within 50 miles are 3 mapped data centers; the nearest is USNAMES-NET in Wilmington, about 36.1 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