Cromby Generating Station is two unit generating station located on the Schuylkill River in Phoenixville, Pa.
Cromby Unit 1 and Unit 2 were installed in 1954 and 1955, respectively. Unit 1 is a 144-megawatt (MW) coal fired unit that is one of Exelon’s most utilized units with more than 330,000 hours of service. Unit 2 is a 201 MW unit that operates on either natural gas or No. 6 fuel based on fuel markets.
The emergency diesel generator supplies power during episodic emergencies, such as safe emergency shutdown of the plant or periods associated with high system demands, which occur during extended hot weather conditions. Under these conditions, the emergency generator is put on-line to run plant auxiliaries, which in turn frees up more capacity from the main units for the regional electric grid. The 3 MW unit operates on No 2 oil.