The Stony Brook Intermediate Unit generates 354 MW of electricity with its three combined-cycle turbines that can burn either petroleum or natural gas.

[3] Since 1976, the plant has been financed with a number of bonds that have granted partial ownership to the Green Mountain Power Corporation and the town of Lyndonville, Vermont.

[1] Originally the units were designed with the intention of running solely on petroleum, but were later converted to dual-fuel in 1983 when natural gas became available.

[3] In 2006, MMWEC began considering the construction of a third combined-cycle natural gas 280 MW unit.

It received approval from the Ludlow Board of Selectmen the same year with the expected date of completion in mid-2010.