America’s Premier Competitive Power Company
... Creating Power for a Sustainable Future
Located in Londonderry, New Hampshire, the Granite Ridge Energy Center is a modern and flexible power plant serving ISO-New England, one of the nation’s leading wholesale power markets.
Operating on clean-burning natural gas, Granite Ridge is a highly efficient combined-cycle facility that uses advanced technology to integrate combustion and steam turbines. It generates electricity first via two electricity-producing natural gas turbines. Then two heat recovery steam generators use heat from that process to create steam that drives one steam turbine. This highly fuel-efficient approach enables the plant to consume 30 percent less natural gas per megawatt-hour-produced than older technology plants, making it a cost-effective and low-carbon source of electricity.