Constellation Power Source Generation (CPSG) told the Maryland Public Service Commission on Sept. 11 that it is withdrawing, because of a recent action by PJM Interconnection, its April 8 application for changes at its Riverside power plant.
Constellation had been asking the commission for approval of the conversion of the 135-MW Riverside Unit 6 to a black start facility capable of supporting the PJM grid.
The Riverside Generating Station is in Baltimore County, Md. CPSG is a merchant generator and a wholly-owned subsidiary of Exelon (NYSE: EXC).
“The Riverside 6 Black Start Project consists of a series of activities undertaken with the purpose of ensuring that Unit 6’s operation is reliable enough to support certain needs associated with PJM electrical system reliability,” said the application. “Specifically, it will allow Unit 6 to function in support of a restart of the regional electrical system in the event that power from the grid is not available to support the startup of generating units critical to system reliability.”
But in the Sept. 11 filing, Constellation said that PJM has withdrawn its request for proposals (RFP) for black start services, which was the initial “driver” of the conversion application.
The existing Riverside station consists of four units: three simple-cycle gas turbines, and one steam-electric unit. The combined current generating capacity of the plant is about 262 MW. Riverside 6 is a natural gas- and kerosene-fired gas turbine with 135 MW of capacity (115 MW in summer).