Did you ever wonder how Powerhouse Hill got its name? Here is a photo of the “Power House at Glen Cove.” Electricity was generated by coal starting in 1892. By 1914, the powerhouse was providing electricity not only for the trolley system but also for lights and businesses. In 1920 the Rockland, Thomaston and Camden Street Railway became part of the rapidly growing Central Maine Power system. At one time, there was a wharf 1,000 feet long for coal deliveries behind the Power House in Glen Cove.