Berkshire Energy Resources is a holding company that operates through its subsidiaries: The Berkshire Gas Company, Berkshire Propane, Inc., and Berkshire Service Solutions, Inc. Berkshire Gas is engaged in the distribution, sale and transportation of natural gas for residential, commercial and industrial use. Berkshire Gas also has an appliance rental division that sells and leases gas-burning equipment. Berkshire Gas' utility service territory includes 19 communities in the western portion of the Commonwealth of Massachusetts. Berkshire Propane is the retail propane subsidiary that provides propane distribution and service to more than 100 communities in western Massachusetts, eastern New York and southern Vermont. The Berkshire Service Solutions subsidiary is engaged in the commodity sale of energy to commercial and industrial customers and provides HVAC and plumbing services in commercial, industrial and residential markets.