List of Affiliates

List of affiliates of Connecticut Light & Power Company (CL&P), doing business as Eversource.

Unregulated Affiliates Covered by Connecticut's Code of Conduct

Affiliate Name Business
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Affiliates Not Covered by Connecticut's Code of Conduct

Affiliate Name Business
Eversource Energy Parent company of CL&P and one of the largest utility systems in the country and the largest in New England.
The Connecticut Steam Company Wholly-owned subsidiary of CL&P; inactive.
Electric Power Incorporated Wholly-owned subsidiary of CL&P; inactive.
The Nutmeg Power Company Wholly-owned subsidiary of CL&P; inactive.
Public Service Company of New Hampshire (PSNH), dba Eversource Energy Wholly-owned subsidiary of Eversource Energy; PSNH is New Hampshire’s largest electric utility serving about 523,000 customers throughout the state of New Hampshire.
Properties, Inc. Wholly-owned subsidiary of PSNH; owns non-utility real estate in New Hampshire.
PSNH Funding LLC 3 Wholly-owned subsidiary of PSNH; formed for the purpose of acquiring and holding Rate Reduction Bond property and certain other collateral and to issue and sell Rate Reduction Bonds.
NSTAR Electric Company (NSTAR Electric), dba Eversource Energy Wholly-owned subsidiary of Eversource Energy; NSTAR Electric is an electric utility serving more than 1.4 million customers in 140 cities and towns (including Boston) in the Commonwealth of Massachusetts. Western Massachusetts Electric Company, formerly a wholly-owned subsidiary of Eversource Energy, was merged into NSTAR Electric Company, on December 31, 2017.
Harbor Electric Energy Company Wholly-owned subsidiary of NSTAR Electric; provides retail distribution and other services to the Massachusetts Water Resources Authority.
Yankee Energy System, Inc. (YES) Wholly-owned subsidiary of Eversource Energy; holding company for Eversource Energy’s gas businesses, including NSTAR Gas Company, Eversource Gas Company of Massachusetts, Yankee Gas Services Company and Hopkinton LNG Corp.
Yankee Gas Services Company (Yankee Gas), dba Eversource Energy Wholly-owned subsidiary of YES; Yankee Gas is Connecticut’s largest natural gas distribution company, serving approximately 229,000 customers in 73 cities and towns.
NSTAR Gas Company (NSTAR Gas), dba Eversource Energy Wholly-owned subsidiary of YES; NSTAR Gas is a natural gas distribution company serving approximately 300,000 customers in 51 cities and towns in the Commonwealth of Massachusetts.
Eversource Gas Company of Massachusetts (EGMA), dba Eversource Energy Wholly-owned subsidiary of YES; EGMA is a natural gas distribution company, serving approximately 329,500 customers in 65 cities and towns in the Commonwealth of Massachusetts. EGMA completed the acquisition of substantially all of the assets of Bay State Gas Company, dba Columbia Gas of Massachusetts on October 9, 2020.
Hopkinton LNG Corp. Wholly-owned subsidiary of YES; owns and controls liquid natural gas storage facilities used by NSTAR Gas and EGMA during the winter heating season.
Eversource Energy Transmission Ventures, Inc. (EE-TV) Wholly-owned subsidiary of Eversource Energy; holding company for certain entities, including Northern Pass Transmission LLC.
Northern Pass Transmission LLC (NPT) Wholly-owned subsidiary of EE-TV; NPT is a shell company related to The Northern Pass transmission project that was terminated in 2019.
Renewable Properties, Inc. Wholly-owned subsidiary of EE-TV; owns real property acquired in New Hampshire for The Northern Pass transmission project that was terminated in 2019.
Eversource Gas Transmission LLC Wholly-owned subsidiary of EE-TV; is a shell holding company formerly related to the Access Northeast Project that was terminated in 2019.
Eversource LNG Service Company LLC Wholly-owned subsidiary of EE-TV; is a shell holding company formerly related to the Access Northeast Project that was terminated in 2019.
Eversource Gas Transmission II LLC Wholly-owned subsidiary of EE-TV; holds Eversource Energy's 15% Class C member interest in Algonquin Gas Transmission LLC, the entity that owns the existing Algonquin gas pipeline that was enhanced by the Algonquin Incremental Market (AIM) Project.
Eversource Holdco Corporation (Eversource Holdco) Wholly-owned subsidiary of Eversource Energy; holding company for Eversource Energy's wind businesses.
Eversource Investment LLC Wholly-owned subsidiary of Eversource Holdco; holds Eversource Energy's 50% ownership interest in North East Offshore, LLC.
Eversource Investment Service Company LLC Wholly-owned subsidiary of Eversource Holdco; formed to contract for the construction of the onshore facilities for Bay State Wind.
Aquarion Company (AC) Wholly-owned subsidiary of Eversource Energy; holding company for Eversource Energy’s water businesses.
Aquarion Water Company (AWC) Wholly-owned subsidiary of AC; holding company that owns regulated public water utility operating subsidiaries in Connecticut, Massachusetts and New Hampshire, and unregulated subsidiaries located in Connecticut and Massachusetts.
Aquarion Water Company of Connecticut  Wholly-owned subsidiary of AWC; regulated public utility and the public water supply company serving approximately 206,500 customers in 55 cities and towns in Connecticut, throughout Fairfield, New Haven, Hartford, Litchfield, Middlesex and New London counties.
Aquarion Water Company of Massachusetts, Inc. Wholly-owned subsidiary of AWC; regulated public utility and the public water supply company in Massachusetts serving approximately 8,720 customers in the towns of Dover, Millbury, Oxford, Plymouth and Sheffield.
Aquarion Water Capital of Massachusetts, Inc. (AWCap-MA) Wholly-owned subsidiary of AWC; unregulated company that formerly leased a water treatment plant to Aquarion Water Company of Massachusetts, Inc. AWCap-MA is in the process of winding down its business.
Aquarion Water Company of New Hampshire, Inc. Wholly-owned subsidiary of AWC; regulated public utility and the public water supply company in New Hampshire serving approximately 9,500 customers in the towns of Hampton, North Hampton and Rye.
Abenaki Water Co., Inc. Wholly-owned subsidiary of AWC; regulated public utility and the public water supply company in New Hampshire serving approximately 720 customers in Bretton Woods, Bow, Gilford and Belmont.
Homeowner Safety Valve Company Wholly-owned subsidiary of AC; unregulated company that is a warranty services business offering water service line, sewer line and in-home plumbing warranty protection programs.
New England Service Company Wholly-owned subsidiary of AC; an unregulated company that provides unregulated water system operation services.
NU Enterprises, Inc. (NUEI) Wholly-owned subsidiary of Eversource Energy; holding company for Eversource Energy’s competitive businesses.
Northeast Generation Services Company (NGS) Wholly-owned subsidiary of NUEI; NGS has completed all of its contractual operating obligations.
NGS Sub, Inc. Wholly-owned subsidiary of NGS; previously known as E.S. Boulos Company, and under such name, provided electrical contracting services in New England. Substantially all of its assets were sold on April 13, 2015, after which the company changed its name to NGS Sub, Inc.
IP Strategy LLC (IPS) Wholly-owned subsidiary of NUEI; IPS is an intellectual property rights holding company.
Eversource Energy Service Company Wholly-owned subsidiary of Eversource Energy; provides centralized accounting, administrative, information resources, engineering, financial, legal, regulatory, operational, planning, purchasing and other professional services to Eversource Energy and its subsidiaries.
The Rocky River Realty Company (RRR) Wholly-owned subsidiary of Eversource Energy; owns and leases non-utility real estate in Connecticut and Massachusetts. NorConn Properties, Inc., formerly a subsidiary of YES, and The Quinnehtuk Company, formerly a direct subsidiary of Eversource Energy, were merged into RRR on August 31, 2009.
HWP Company Wholly-owned subsidiary of Eversource Energy; formerly known as Holyoke Water Power Company, owns limited, non-utility real estate in Holyoke, Massachusetts.
North Atlantic Energy Corporation (NAEC) Wholly-owned subsidiary of Eversource Energy; owned PSNH's share of the Seabrook nuclear generating facility (Seabrook) which was sold to FPL in 2002.  NAEC is in the process of winding down its business.
North Atlantic Energy Service Corporation (NAESCO) Wholly-owned subsidiary of Eversource Energy; was agent for the joint owners of Seabrook prior to its sale. NAESCO is in the process of winding down its business.
Northeast Nuclear Energy Company (NNECO) Wholly-owned subsidiary of Eversource Energy; was agent for the joint owners of the Millstone nuclear generating facilities, which were sold to Dominion Resources in 2001. NNECO is in the process of winding down its business.

Eversource Energy ownership in other entities:

Algonquin Gas Transmission LLC Owner of the Algonquin gas pipeline, of which Eversource Gas II LLC owns 15 percent of Class C member interest with respect to the Algonquin Incremental Market (AIM) Project.
North East Offshore, LLC (NEO) Joint venture entity formed by Eversource and Orsted US East Coast Offshore Wind Holdco, LLC; Eversource Investment LLC owns 50%. NEO owns 100% of several offshore wind farm projects.
Bay State Wind LLC Wholly-owned subsidiary of NEO and the entity that will hold the offshore leases for the Bay State Wind Project.
BSW ProjectCo LLC Wholly-owned subsidiary of NEO and the entity that is developing the Bay State Wind Project, an offshore wind farm to be located approximately 15-25 miles south of Martha's Vineyard.
Deepwater Wind, LLC Wholly-owned subsidiary of NEO and the entity that formerly provided services to other “Legacy Deepwater” companies.
Revolution Wind, LLC Wholly-owned subsidiary of NEO and the entity that is developing the Revolution Wind Project, an offshore wind farm to be located approximately 15 miles south of the Rhode Island coast, 32 miles southeast of the Connecticut coast and 12 miles southwest of Martha’s Vineyard.
South Fork Wind, LLC Wholly-owned subsidiary of NEO and the entity that is developing the South Fork Wind Project, an offshore wind farm to be located 35 miles east of Montauk Point on Long Island, New York.
Sunrise Wind LLC Wholly-owned subsidiary of NEO and the entity that is developing the Sunrise Wind Project, an offshore wind farm to be located at least 30 miles east of Montauk Point on Long Island, New York.
New England Hydro-Transmission Electric Company An electric transmission company of which Eversource Energy owns 22.66 percent and NSTAR Electric owns 14.5 percent.
New England Hydro-Transmission Corporation An electric transmission company of which Eversource Energy owns 22.66 percent and NSTAR Electric owns 14.5 percent.
Eversource Energy ownership interests in companies that own and manage the sites of decommissioned nuclear generating plants: Connecticut Yankee Atomic Power Company
  • CL&P – 34.5 percent
  • NSTAR Electric – 23.5 percent
  • PSNH – 5 percent
Maine Yankee Atomic Power Company
  • CL&P – 12 percent
  • NSTAR Electric – 7 percent
  • PSNH – 5 percent
Yankee Atomic Electric Company
  • CL&P – 24.5 percent
  • NSTAR Electric – 21 percent
  • PSNH – 7 percent