Exelon is planning to expand the Medway station by adding two natural gas turbines, enabling the plant to operate as one of the cleanest peaker plants in the nation.
- Adds 200 MW of electricity to the local electric grid during times of peak demand.
- Fueled by natural gas, with ultra-low sulfur diesel (ULSD) as a backup for no more than 30 days per year.
- Reduces CO2 emissions by 40 percent during operation when displacing older coal and oil burning units.
- Two GE LMS100 combustion turbine-generators – the most efficient simple-cycle natural gas technology available.
- One combined building that houses office, warehouse and maintenance space.
- Supporting structures that include two 160-foot-high exhaust stacks; aboveground storage tanks for ULSD, water and emissions-control additive (aqueous ammonia); emergency generator and fire pump engine and connection to nearby gas pipeline.
- Water required only for emission controls, and supplied by on-site well in combination with municipal purchases outside of Medway.
- Reduced emissions that not only meet all air quality standards, but are well within limits considered safe for the most sensitive of populations (such as the elderly and small children with asthma).
- Multiple layers of noise protection and construction within plant boundaries, which will remain largely blocked from view by existing barriers and tree lines.
- Estimated > $2 million in tax revenue per year, making Exelon the highest tax payer in Medway.
- 200 jobs during construction, and 4-5 full-time positions.
- Additional benefits to Medway through a Host Community Agreement.
2013 New England Peak Fuel Mix
Aerial View of Expansion
Project Frequently Asked Questions (FAQ)
Exelon Generation, which owns and safely operates the West Medway peaking plant on Summer Street in Medway, is seeking an expansion of that facility to help meet future energy demand in New England. The expansion will include two new, state-of-the-art generating units that will feature clean air technologies with minimal water use. The following are links to key issues and answers to frequently asked questions.
Sound and Visuals
What Is a Peaker Plant?
Peaker plants deliver energy when the demand for electricity exceeds that provided by base-load power plants (those that run all the time and provide most of the region’s electricity). This typically happens during the hottest and coldest times of the year. Unlike base-load facilities that may take several hours to start up, peaker plants must start up quickly (the newest models such as those proposed for Medway come on-line in about 10 minutes).