Headquartered in Hampton, New Hampshire, Unitil primarily serves business districts and recreational centers. Its electricity and natural gas services also provide coverage for commercial and industrial businesses. Hundreds of educational institutes and electronic component manufacturers rely on the services provided by the company. There are three wholly owned distribution facilities of the business, namely Northern Utilities, Inc., Fitchburg Gas and Electric Light Company and Unitil Energy Systems, Inc. The non-utility offerings of the company are serviced by U-source, a company registered as an energy brokering and advice business.
Listed as one of the components of the Russell 3000 Index, Unitil continues to provide heating and electrical services to more than 102,400 customers across the states. The company continues to trade publicly on the New York Stock Exchange.