EX-21 17 a2023-ex21subsidiariesofth.htm EX-21 SUBSIDIARIES OF THE REGISTRANT Document

Exhibit 21

Subsidiaries of the Registrants as of February 14, 2024 (1)
State of Incorporation
The Connecticut Light and Power Company (2) (3)
CT
Connecticut Yankee Atomic Power Company (4)
CT
Eversource Energy Service CompanyCT
Eversource Energy Transmission Ventures, Inc.CT
Eversource Gas Transmission LLCMA
Eversource Gas Transmission II LLCMA
Eversource LNG Service Company LLCMA
Northern Pass Transmission LLCNH
Renewable Properties, Inc.NH
Eversource Holdco CorporationMA
Eversource TEI LLCDE
Eversource Investment LLCMA
Eversource Investment Service Company LLCMA
Aquarion CompanyDE
Aquarion Water CompanyCT
Abenaki Water Co., Inc.NH
Aquarion Water Company of ConnecticutCT
Aquarion Water Company of Massachusetts, Inc.MA
Aquarion Water Capital of Massachusetts, Inc.DE
Aquarion Water Company of New Hampshire, Inc.NH
The Torrington Water CompanyCT
Homeowner Safety Valve CompanyDE
New England Service CompanyCT
HWP CompanyMA
North Atlantic Energy CorporationNH
North Atlantic Energy Service CorporationNH
Northeast Nuclear Energy CompanyCT
NSTAR Electric Company (2) (3)
MA
Harbor Electric Energy CompanyMA
Public Service Company of New Hampshire (2) (3)
NH
Properties, Inc.NH
PSNH Funding LLC 3DE
The Rocky River Realty CompanyCT
Yankee Atomic Electric Company (4)
MA



Yankee Energy System, Inc.CT
Eversource Gas Company of Massachusetts (3)
MA
Hopkinton LNG Corp.MA
NSTAR Gas Company (3)
MA
Yankee Gas Services Company (3)
CT
YES Clean Hydrogen LLCDE

(1) The names of some of our subsidiaries which, if considered in the aggregate as a single subsidiary, would not constitute a “significant subsidiary,” have been omitted in accordance with Item 601(b)(21)(ii) of Regulation S-K.
(2) SEC Registrant.
(3) This entity is doing business as Eversource Energy.
(4) For The Connecticut Light and Power Company, NSTAR Electric Company and Public Service Company of New Hampshire, investments in Connecticut Yankee Atomic Power Company and Yankee Atomic Electric Company are accounted for under the equity method.