 In 1950, the company separated from the Philadelphia Company and listed on the New York Stock Exchange

In 1984, the company changed its corporate name to Equitable Resources, Inc.In 1995, the company offered the first fixed bill energy contract in U.S. where what a customer pays for energy is fixed no matter what the weather does.In 1997, the company acquired Northeast Energy Services Co. (NORESCO) for $77 million.