FERC accepts interconnect for Exelon’s 207-MW West Medway II project

The Federal Energy Regulatory Commission on Aug. 15 accepted a June 27 filing by ISO New England and interconnecting transmission owner NSTAR Electric of an executed non-conforming Standard Large Generator Interconnection Agreement with Exelon West Medway II LLC for a planned expansion of a gas-fired power plant in Massachusetts. 

The deal governs the interconnection of this new capacity at NSTAR’s 115-kV Medway Station. This new facility will be comprised of two new simple cycle combustion turbine generators (CTG), designated CTG1 and CTG2, each rated at 103.467 MW, and located in the Town of Medway, Mass. Each CTG will be connecting to one low-voltage winding of a new three-winding generator step-up transformer (GSU).

This new facility is located at a site adjacent to an existing power plant, which is known as Unit J-3 and is interconnected pursuant to a separate qgreement between NSTAR and West Medway, dated as of 1997. While this new facility is separate from and does not include West Medway’s existing facility, it will be interconnecting to NSTAR’s 115 kV-Medway Station through shared facilities.

The commercial operation target date for this new generating facility, under the agreement, is April 17, 2018.

The project company is a subsidiary of Exelon (NYSE: EXC). The project would operate during times of peak energy demand and would run primarily on natural gas, but could also run on ultra-low-sulfur diesel (ULSD) fuel oil, ensuring fuel diversity and reliability. The project will utilize two simple-cycle General Electric LMS100 combustion turbine generators.

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.