Private company

Connecticut Natural Gas

American natural gas distribution company

Connecticut Natural Gas (CNG) is a natural gas distribution company that delivers natural gas and energy services to residential, commercial, and industrial customers in the Greater Hartford area and Greenwich, Connecticut areas. CNG is a subsidiary of UIL Holdings Corporation, headquartered in New Haven, Connecticut.² It is part of Avangrid.¹ Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

Industrynatural gas¹
HeadquartersEast Hartford¹
Websitewww.cngcorp.com
Legal formStock Corporation³
LEI5493004YEHAF1WJ41765³
StatusActive³
LEI statusIssued and current³
Registered addressGOODWIN SQUARE, 225 ASYLUM STREET 20TH FLOOR, 06103 Hartford, United States³
Registered withSecretary of the State's Commercial Recording Division, 0115039³

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Corporate structure

Connecticut Natural Gas is part of a group headed by Avangrid. 31 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Avangrid Orange, Connecticut, United States
- Connecticut Natural Gas East Hartford, Connecticut, United States
- New York State Electric & Gas Albany, New York, United States
  - New York Central Electric Subsidiary · United States
- Rochester Gas & Electric Rochester, New York, United States
- Southern Connecticut Gas Orange, Connecticut, United States
- The United Illuminating Company Orange, Connecticut, United States
- Avangrid Networks, Inc. Subsidiary · Maine, United States
- AVANGRID POWER, LLC Subsidiary · Portland, Oregon, United States
  - ATLANTIC RENEWABLE PROJECTS II LLC Subsidiary · Portland, Oregon, United States
  - Bluebird Solar Power, LLC Subsidiary · Portland, Oregon, United States
  - CAMINO SOLAR, LLC Subsidiary · Portland, Oregon, United States
  - CASSELMAN WINDPOWER LLC Subsidiary · Portland, Oregon, United States
  - Juniper Canyon Wind Power LLC Subsidiary · Portland, Oregon, United States
  - KARANKAWA WIND, LLC Subsidiary · Wilmington, Delaware, United States
  - Leaning Juniper Wind Power II, LLC Subsidiary · Portland, Oregon, United States
  - MOHAWK SOLAR LLC Subsidiary · Portland, Oregon, United States
  - OREGON TRAIL SOLAR, LLC Subsidiary · Portland, Oregon, United States
  - OSAGROVE FLATS SOLAR, LLC Subsidiary · Portland, Oregon, United States
  - PATRIOT WIND FARM, LLC Subsidiary · Wilmington, Delaware, United States
  - PONTOTOC WIND, LLC Subsidiary · Portland, Oregon, United States
  - PPM ROARING BROOK, LLC Subsidiary · Portland, Oregon, United States
  - SOUTH CHESTNUT LLC Subsidiary · Portland, Oregon, United States
  - STREATOR-CAYUGA RIDGE WIND POWER LLC Subsidiary · Portland, Oregon, United States
  - VINEYARD WIND 1 LLC Subsidiary · New Bedford, Massachusetts, United States
- Avangrid Renewables Holdings, Inc. Subsidiary · Delaware, United States
- Avangrid Renewables, LLC Subsidiary · Oregon, United States
- CENTRAL MAINE POWER COMPANY Subsidiary · Augusta, Maine, United States
- Maine Natural Gas Corporation Subsidiary · Maine, United States
- THE BERKSHIRE GAS COMPANY Subsidiary · Pittsfield, Massachusetts, United States
- UIL Holdings Corporation Subsidiary · Connecticut, United States

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

Subsidiaries and ownership

Parent company

Avangrid

From Wikidata.¹

Timeline

Jul 2, 2008Parent Directly consolidated by Avangrid³
Jul 2, 2008Founded Connecticut Natural Gas is founded³

Sources

The numbers on this page point here. Each one links to the record it came from.

1
WikidataConnecticut Natural Gas on Wikidata
2
WikipediaConnecticut Natural Gas on Wikipedia
3
GLEIFConnecticut Natural Gas LEI record (5493004YEHAF1WJ41765)