2,230 plants · 253.2 GW total capacity
The PJM Interconnection grid region encompasses 2,230 power plants with 253.2 GW total capacity across 15 states.
Largest is Homer City Generating Station (4396 MW Natural Gas); oldest active is Reusens (1903); newest is Prologis Edison 0405 - SLCNJ405 (2026); top state is New Jersey (433 plants); top owner is Dominion Energy (88 plants).