Boston Edison Co. is an energy delivery company engaged primarily in the transmission and distribution of energy. Boston Edison serves approximately 695,000 electric customers in the City of Boston and 39 surrounding communities. Boston Edison currently supplies electricity at retail to an area of 590 square miles. It also supplies electricity at wholesale for resale to municipal electric departments. The company is incorporated in 1886 and is a wholly owned subsidiary of NSTAR. It located in Boston, MA.