GE to supply two gas turbines for Exelon’s West Medway plant

General Electric (NYSE: GE) said Dec. 8 that it is providing Exelon (NYSE: EXC), one of the largest competitive power generators in the U.S., with two highly efficient LMS100PA+ aeroderivative gas turbines and a control system to upgrade the facility.

They are for the West Medway Generating Station in Medway, Mass. 

“With the retirements of several generation plants in New England, GE’s advanced gas turbine units can help fill an identified capacity shortage in the region, including the Boston area,” said Ron DeGregorio, senior vice president, Exelon Generation and president, Exelon Power. “These units will deliver cleaner power more efficiently, and will be an important bridge to the region’s drive for more renewable energy sources.”

Exelon has owned the three-uni,t oil-fired Medway peaking facility since 2002, and the two LMS100 units are a good fit for the space available at the existing site. The new units will be powered primarily by natural gas, with Ultra Low Sulfur Diesel (ULSD) as a back-up. The nearly 200 MW plant will be able to generate the equivalent power needed to supply approximately 200,000 U.S. homes. The existing Medway units will continue to operate.

The project builds on the current GE-Exelon relationship. Last year, Exelon ordered GE’s high efficiency 7HA.02 heavy duty gas turbines and related equipment, including Alstom heat recovery steam generator (HRSG) units, to add more than 2,000 MW of additional capacity for the Wolf Hollow and Colorado Bend plants in Texas.

“In Massachusetts, Texas or elsewhere, Exelon is focused on providing efficient, flexible and reliable power generation,” said Joe Mastrangelo, president and CEO, gas power systems at GE Power. “The versatility and scope of GE technology allows us to deliver those benefits, whether we’re supplying large-frame H-class gas turbines, smaller aeroderivative units or software solutions from GE.”

GE’s LMS100 aeroderivative gas turbine provides the highest efficiency and best operational flexibility in its class. In simple cycle, the turbine offers a ten-minute start time, unmatched hot day performance, and load following and cycling capabilities. The LMS100 comes from the CF6 family of aircraft engines, and the current fleet has over 350,000 operating hours, with over 44,000 starts.

Two Exelon subsidiaries on Sept. 30 filed with the Massachusetts Energy Facilities Siting Board a Draft Environmental Impact Report covering the gas-fired, 200-MW West Medway II Project, which would involve expansion of this existing power plant. Exelon West Medway LLC and Exelon West Medway II LLC had filed in March for approval of this project. The new facility would operate during times of peak energy demand and would run primarily on natural gas, but could also run on ULSD fuel oil, ensuring fuel diversity and reliability. Use of ULSD will be limited to an equivalent of 30 days/720 hours per year.

Exelon’s existing 135-MW West Medway power plant is located on the northeastern portion of the Summer Street site. The western half of the Summer Street site is occupied by two Eversource switchyards (one 345 kV, one 115 kV) and associated transmission rights of way. The proposed project will include two simple-cycle General Electric LMS100 combustion turbine generators (CTGs).

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.