Since December of 2006, the SMLD has purchased hydroelectric power from a unit called the Baltic Mills Hydro on the Mascoma River in Enfield, NH (see photo above).

Since January of 2009, the SMLD added more hydroelectric facilities to its power supply portfolio, including a run of the river 250 KW plant on the Contoocook River in Contoocook, NH (see photo above).

Since January 2007, the SMLD has purchased hydroelectric power from a unit called Mechanicsville (Saywatt) Hydro on the French River in Mechanicsville, Connecticut (see photo above).

Since October of 2008, the SMLD has purchased hydroelectric power from a unit called the Methuen Falls Hydroelectric plant on the Spicket River in Methuen, MA (see photo above).

Since March 2010, the SMLD has purchased hydroelectric power from a unit called Centennial Island Hydro on the French River in Lowell, MA  (see photo above).