Pennsylvania
power plants.
Pennsylvania has 109 operating power plants in the catalog, 42,188 MW in all. The catalog also marks 11 plants as Retired, with 3,595 MW of capacity. Its operating fleet leans on natural gas, which accounts for 52.2% of operating capacity, with nuclear second at 23.2%. The largest operating plant in the catalog is Peach Bottom Nuclear Power Plant (2,824 MW, recorded start year 1974).
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Pennsylvania electricity mix
Operating installed capacity by fuel. Each row gives megawatts and its share of the operating total.
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Largest plants in Pennsylvania
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Newest plants in Pennsylvania
This table includes 1 of the 6 operating plants with a recorded start year of 2018, largest first. The catalog records years, not full commissioning dates.
Source: Global Energy Monitor, Global Integrated Power Tracker, March 2026 release II. Catalog content date: .
Frequently asked questions
Where does Pennsylvania get its electricity?
Across the 109 operating plants in the catalog, capacity is led by natural gas at 52.2%, then nuclear at 23.2%. These are installed-capacity shares, not live generation.
What is the largest power plant in Pennsylvania?
The largest operating plant in the catalog for Pennsylvania is Peach Bottom Nuclear Power Plant, a nuclear facility with 2,824 MW and a recorded start year of 1974.
How many power plants are in Pennsylvania?
The catalog tracks 109 operating power plants in Pennsylvania, with 42,188 MW in all. It also marks 11 plants as Retired, with 3,595 MW of capacity.