LIMERICK

How LIMERICK compares

With 2,277 MW of capacity, LIMERICK ranks 3rd among the 170 operating power plants Bywatts maps in Pennsylvania and 3rd of the 5 operating Nuclear plants in the state. It accounts for about 23% of Pennsylvania's operating Nuclear capacity and 5.8% of all operating capacity in the state. Nationally it is the 18th-largest of the 55 operating Nuclear plants in the database. Commissioned in 1986, it is older than 70% of the 168 operating Pennsylvania plants with a recorded commissioning year. Its operator, EXELON NUCLEAR, runs 3 operating plants in Pennsylvania totaling 5,572 MW. It shares Montgomery County with 4 other operating plants, including WEST POINT and MOSER GENERATING STATION.

EIA-860 lists 2 generators at the site with 2,277 MW of nameplate capacity, all nuclear technology. Net generation was 19,360 GWh in 2024 (a 97% capacity factor), up 1% from 2022. Its generators came online between 1986 and 1990.

Grid neighborhood

The nearest named substation is LIMERICK (230KV SUB) (230 kV), about 0.2 miles away; the closest transmission line found within 10 miles is a 500 kV line owned by PECO ENERGY CO, under 0.1 miles away. Another 10 operating power plants totaling 924 MW sit within 25 miles; the largest is ONTELAUNEE ENERGY CENTER (728 MW, Natural Gas). Within 50 miles are 4 mapped data centers; the nearest is Quonix Datacenter (2401 Locust St) in Philadelphia, about 28.7 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