Unitil Corporation, a public utility holding company, engages in the distribution of electricity and natural gas. It operates through two segments, Utility Electric Operations and Utility Gas Operations. The company distributes electricity in the southeastern seacoast and state capital regions of New Hampshire, and the greater Fitchburg area of north central Massachusetts; and distributes natural gas in southeastern New Hampshire and portions of southern and central Maine, including the city of Portland and the Lewiston-Auburn area; greater Bangor area of central Maine; and capital city of Augusta, as well as electricity and natural gas in the greater Fitchburg area of north central Massachusetts. It also operates 85 miles of interstate underground natural gas transmission pipeline that pr…