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The utility companies that serve Greater New Haven are here to assist you, whether you are opening, relocating or expanding your business. SCG & UI (part of the Avangrid family) has demonstrated a strong commitment to regional economic development through contributions to REX Development.

UI - An Avangrid Company

United Illuminating (UI) is a subsidiary of AVANGRID, Inc. (NYSE: AGR). Established in 1899, UI is engaged in the purchase, transmission, distribution and sale of electricity and related services to approximately 338,654 residential, commercial and industrial customers in the greater New Haven and Bridgeport areas of Connecticut.

UI's service territory includes 17 Connecticut towns and cities in an area totaling 335 square miles along or near the shoreline of Long Island Sound.

Service Area
P 203 499 5931

SCG - An Avangrid Compnay

Southern Connecticut Gas delivers natural gas to 196,000 customers in 24 Connecticut communities. If you are interested in converting to natural gas, you can use our online tool to find out if gas is available on your street.

Service Area
P 866 268 2887

Avangrid UI Southern CT Gas Logos

Proud sponsor of REX Development


Eversource Energy, formerly Northeast Utilities, is a utility holding company engaged in the energy delivery business. The Company operates through three segments: electric distribution, electric transmission and natural gas distribution. The Company's electric distribution segment provides electricity to retail customers in Connecticut and eastern Massachusetts. The electric transmission segment owns and maintains transmission facilities that are part of an interstate power transmission grid over which electricity is transmitted throughout New England. The natural gas distribution segment provides firm natural gas sales service to retail customers who require a continuous natural gas supply throughout the year, such as residential customers who rely on natural gas for heating, hot water and cooking needs, and commercial and industrial customers who choose to purchase natural gas from the Company's natural gas distribution companies.

Service Area
P 860 665-5000

Wallingford Electric, a Division of the Town of Wallingford

Provides electric energy to customers in Wallingford and a portion of Northford, and maintains the municipal street light system.

P 203 294 2020

South Central Connecticut Regional Water Authority

SCCRWA is a non-profit entity that provides water service to and promotes economic development in the South Central Connecticut communities of Bethany, Branford, East Haven, Hamden, Milford, New Haven, North Branford, North Haven, Orange, West Haven, Woodbridge, Guilford and Madison.

P 203 562 4020