New interconnect deals for two Exelon nuclear plants cover output uprates

PJM Interconnection on Sept. 21 filed with the Federal Energy Regulatory Commission two executed Interconnection Service Agreements (ISAs) with Exelon Generation Co. LLC (ExGen) and interconnecting transmission owner Commonwealth Edison, with these revised ISAs superseding ISAs from 2011.

The ISAs cover two nuclear plants. 

  • The Byron ISA facilitates the interconnection to the PJM system of a 2,442 MW nuclear station (1,232 MW for Unit No. 1 and 1,210 MW for Unit No. 2) located in Byron, Illinois. The Maximum Facility Output of 2,442 MW includes an increase of 40 MW (20 MW for Unit No. 1 and 20 MW for Unit No. 2) over ExGen’s previous interconnection. The Byron ISA indicates that ExGen shall have Capacity Interconnection Rights in the amount of 2,360 MW (1,193 MW for Unit No. 1 and 1,167 MW for Unit No. 2) consisting of 2,320 MW that ExGen had at the Point of Interconnection prior to the interconnection request associated with the Byron ISA and 40 MW associated with the interconnection request resulting in the new Byron ISA.
  • The Braidwood ISA facilitates the interconnection to the PJM system of a 2,454 MW nuclear station (1,240 MW for Unit No. 1 and 1,214 MW for Unit No. 2) located in Braceville, Illinois. The Maximum Facility Output of 2,442 MW includes an increase of 40 MW (20 MW for Unit No. 1 and 20 MW for Unit No. 2) over ExGen’s previous interconnection. The Braidwood ISA indicates that ExGen shall have Capacity Interconnection Rights in the amount of 2,379.2 MW (1,203 MW for Unit No. 1 and 1,176.2 MW for Unit No. 2) consisting of 2,339.2 MW that ExGen had at the Point of Interconnection prior to the interconnection request associated with the new Braidwood ISA and 40 MW associated with the interconnection request resulting in the new Braidwood ISA.
About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.