Our History

Through its predecessor companies, New Haven Gas Light and Bridgeport Gas, Southern Connecticut Gas has served the shoreline region of southern Connecticut since 1847. The Bridgeport and New Haven-based predecessors merged in 1967 and were incorporated as Southern Connecticut Gas.

In 2010, SCG and its sister companies, Connecticut Natural Gas and Berkshire Gas of Massachusetts, became subsidiaries of UIL Holdings Corporation.

UIL Holdings merged in 2015 with the U.S. holdings of Iberdrola, S.A. to form AVANGRID, Inc. (NYSE: AGR), a diversified energy and utility company with two primary lines of business in 27 states.

SCG is proud to be part of the AVANGRID family of companies and shares its commitment to providing clean energy and reliable delivery to customers through innovative technology and sound investment in infrastructure.