Established in 1899, UI is engaged in the purchase, transmission, distribution and sale of electricity and related services to 325,000 residential, commercial and industrial customers in 17 towns and cities in the greater New Haven and Bridgeport areas.

Regulated as a utility, UI for many years exclusively owned and operated the electric generation, transmission and distribution facilities in the greater New Haven and Bridgeport areas.

[1] In 2000, as a result of Connecticut’s 1998 deregulation legislation, UI was required to sell its electricity generation plants, including the facilities at New Haven and Bridgeport harbors, and to divest from other generation projects including the Connecticut Yankee and Millstone nuclear power plants.

UI continues to own and operate the transmission and distribution delivery infrastructure within its 17-town service territory.

(*) United Illuminating, along with Eversource Energy, previously known as Northeast Utilities (parent company of Connecticut Light and Power), has participated in a number of projects to improve the reliability of the power grid in southwest Connecticut.