PJM works on second phase of Calpine’s Garrison project in Delaware

Garrison Energy Center LLC has proposed a 451 MWE (451 MWC; 451 MW MFO) natural gas-fueled combined cycle facility consisting of one combustion turbine and one steam turbine generator arranged in a 1×1 configuration.

PJM Interconnection in a project study dated March 2016 said that this project, under queue #AA2-069, will be located at the developer’s existing generating facility in Dover, Delaware. PJM studied AA2-069 as a 451 MW injection into the Delmarva Power and Light (DPL) system at the Cartanza 230 kV substation and evaluated it for compliance with reliability criteria for summer peak conditions in 2019. The planned in-service date, as stated during the project kick-off call, is June 1, 2018.

AA2-069 will utilize the same Point of Interconnection (POI) as the existing Garrison Energy Center generation facility. The Garrison Energy Center connects to DPL’s transmission network via a 230 kV transmission line into Cartanza 230 kV Substation. The Point of Interconnection for the existing facility was established in the Interconnection Service Agreement (ISA) for queue project #W3-032A.

DPL assumes that Garrison Energy will be dispatching the existing combined cycle unit and AA2-069 as one entity; therefore separate metering for AA2-069 is not required.

The intent of this System Impact Study is to determine a plan, with approximate cost and construction time estimates, to connect the subject generation interconnection project to the PJM network at a location specified by the power project developer. It is a mid-way point in the ISA process for this second project.

Garrison is a unit of Calpine Corp. (NYSE: CPN), with Calpine saying about this project in its Feb. 12 annual Form 10-K report: “We are in the early stages of development of a second phase of the Garrison Energy Center that will add approximately 430 MW of dual-fuel, combined-cycle capacity to our existing Garrison Energy Center. PJM has completed its feasibility study of the project and the system impact study is underway.”

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.