CNG is a subsidiary of UIL Holdings Corporation, headquartered in New Haven, Connecticut.
[1] CNG's service territory in Connecticut includes the cities of Hartford and New Britain, Connecticut, as well as the communities of Avon, Berlin, Bloomfield, Canton, East Hartford, Farmington, Glastonbury, Manchester, Newington, Rocky Hill, Simsbury, Unionville, West Hartford, Wethersfield and Windsor in Hartford County; Hebron and Mansfield in Tolland County; Portland in Middlesex County and Greenwich in lower Fairfield County.
[citation needed] The relocation of CNG's headquarters from Adrien's Landing to East Hartford cost $37 million which was paid for by the state.
[2] The move was controversial because the contractor chosen to do the job (Tomasso Group) had a corrupt relationship with then Governor John G. Rowland, who was overseeing the development of Adrien's Landing, that eventually cost him his job.
[4] Employees at CNG are represented by Connecticut Independent Utility Workers.