Full (IOU) Members

Investor Owned Utilities (Full Members)
IOUs with full membership receive the following benefits:

  • A seat on ECNE's Board of Directors
  • Discounted registration fees for all ECNE events and courses
  • All company employees are eligible to participate in ECNE's Committees & Working Groups
  • Access to all ECNE reports, surveys, and standards
  • Access to ECNE's online forums, webinars, and remote meetings

IOU membership dues are based upon MWH sales. For information, please contact Darlene LeTavec (dletavec@ecne.org).

ECNE's Full Members: 

AVANGRID
Includes: Berkshire Gas Company, Central Maine Power (CMP), Connecticut Natural Gas (CNG), Maine Natural Gas, New York State Electric & Gas (NYSEG), Rochester Gas & Electric (RG&E), Southern Connecticut Gas (SCG) and The United Illuminating Company (UI)

52 Farm View Drive
New Gloucester, Maine 04260
(207) 688-6300
www.avangrid.com

The Berkshire Gas Company
115 Cheshire Road
Pittsfield, MA 01201
(413) 442-1511
www.berkshiregas.com  

Central Maine Power (CMP)
83 Edison Drive

Augusta, Maine 04330
(207) 623-3521
www.cmpco.com

Connecticut Natural Gas (CNG)
76 Meadow Street
East Hartford, CT 06108
(860) 456-8745
www.cngcorp.com

Maine Natural Gas
9 Industrial Parkway
Brunswick, ME 04011
(207) 729-0420
www.mainenaturalgas.com

New York State Electric & Gas (NYSEG)
18 Link Drive
Binghamton, NY 13904
(800) 600-2275
www.nyseg.com

Rochester Gas & Electric (RG&E)
89 East Avenue
Rochester, NY 14649
(800) 295-7323
www.rge.com

Southern Connecticut Gas (SCG)
60 Marsh Hill Road
Orange, CT 06477
(866) 268-2887
www.soconngas.com

The United Illuminating Company (UI)
180 Marsh Hill Road
Orange, CT 06477
(203) 499-2000
www.uinet.com

Emera Maine
P.O. Box 932
970 Illinois Avenue
Bangor, Maine 04402
(207) 945-5621
www.emeramaine.com

PO Box 1029
209 State Street
Presque Isle, Maine 04769
(207) 768-5811

Eversource Energy 
(Formerly Northeast Utilities/NSTAR Electric & Gas Corp./Public Service of New Hampshire/WMECo)
P.O. Box 270
Hartford, Connecticut 06141

(800286-5000 
www.eversource.com

247 Station Drive
Westwood, Massachusetts 02090
(800) 592-2000

P.O. Box 330  Manchester, New Hampshire 03105  (800) 662-7764

P.O. Box 2010
West Springfield, MA 01090
(413) 781-4300

Green Mountain Power Corporation

163 Acorn Lane
Colchester, Vermont 05446
(888) 835-4672
www.greenmountainpower.com

77 Grove Street
Rutland, Vermont 05701
(802) 773-2711

Liberty Utilities

15 Buttrick Road
Londonderry, New Hampshire 03053
(800) 375-7413
www.libertyutilities.com

407 Miracle Mile
Lebanon, New Hampshire 03766
(603) 443-4200

National Grid
40 Sylvan Road
Waltham, MA 02451
(800) 322-3223
www.nationalgridus.com

300 Erie Boulevard W.
Syracuse, NY 13202
(800) 642-4272


Unitil Service Corporation
UNITIL Corporation
6 Liberty Lane West
Hampton, New Hampshire 03842
(603) 772-0775
www.unitil.com

Unitil Energy Systems, Inc., Capital Distribution Center
One McGuire Street
Concord, New Hampshire 03301
(603) 224-2311

Unitil Energy Systems, Seacoast
Operations Distribution Center
114 Drinkwater Road
Kensington, New Hampshire 03833
(603) 772-5916

Unitil/Fitchburg Gas & Electric Light Co.
P.O Box 8207, 285 John Fitch Highway
Fitchburg, Massachusetts 01420
(888) 301-7700

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