Natural gas companies

Here, you can see a list of Massachusetts investor-owned and municipal gas companies.

Investor-Owned Local Distribution Companies

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Gas Company	Address	Phone Number	PHMSA ID
Berkshire Gas Company	115 Cheshire Road Pittsfield, MA 01202	[phone]	01344
Eversource Energy (NSTAR Gas Company)	247 Station Drive Westwood, MA 02090	[phone]	02652
Eversource Gas Company of Massachusetts (formerly Bay State Gas d/b/a Columbia Gas of Massachusetts)1	P.O. Box 2025 Springfield, MA 01102	[phone]	40196 (distribution and transmission) 40195 (LNG)
Liberty Utilities (Fall River/North Attleboro/Blackstone)2	465 Sykes Road Fall River, MA 02720	[phone]	31770
National Grid (Boston Gas Company/Colonial Gas Company)	40 Sylvan Road Waltham, MA 02451	[phone]	01640 (Boston) 04547 (Boston/Essex) 11856 (Colonial/Lowell) 02066 (Colonial/Cape Cod)
Unitil (Fitchburg Gas and Electric Light Company)	285 John Fitch Highway Fitchburg, MA 01420	[phone]	05200

¹On October 7, 2020, the Department approved a Settlement Agreement authorizing the sale of Bay State Gas to Eversource Energy.  Eversource Energy/Bay State Gas Company Merger, D.P.U. 20‑59 (October 7, 2020).  The sale closed on October 9, 2020.  The name for Bay State Gas/Columbia Gas of Massachusetts is now Eversource Gas Company of Massachusetts.

²On October 13, 2020, the Department approved the acquisition of Blackstone Gas Company by Liberty Utilities.  Petition of Liberty Utilities for approval by the Department of Public Utilities, pursuant to G.L. c. 164, § 96, of the acquisition of Blackstone Gas Company, D.P.U. 20-03, at n.5 (October 13, 2020).  The acquisition closed on December 31, 2020.  The name for Blackstone Gas Company is now Liberty Utilities.

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Municipal Gas Companies

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Gas Company	Address	Phone Number	PHMSA ID
Holyoke Gas & Electric	99 Suffolk Street Holyoke, MA 01040	[phone]	07330
Middleborough Gas & Electric	32 South Main Street Town Hall Middleborough, MA 02346	[phone]	12444
Wakefield Municipal Gas & Light	9 Albion Street Wakefield, MA 01880	[phone]	22035
Westfield Gas & Electric Light	100 Elm Street Westfield, MA 01085	[phone]	22511

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