The MMWEC power supply includes MMWEC-owned capacity in four major New England power plants:
The MMWEC-owned capacity and energy from these plants is resold at MMWEC’s cost to 28 Massachusetts municipal utilities, the Pascoag (Rhode Island) Utility District and six utilities in Vermont. MMWEC also purchases power in bulk through bilateral contracts with power suppliers and resells the power at cost to participating utilities.