Rate cases, natural gas companies

Here you can view the most recent rate case decisions and filings for Massachusetts investor-owned natural gas companies regulated by the Department of Public Utilities.

Table of Cases

Gas Company	Completed	Pending Case Number
Eversource Gas Company of Massachusetts (formerly Bay State Gas Company d/b/a Columbia Gas of Massachusetts)1	D.P.U. 15-50	N/A
Berkshire Gas Company	D.P.U. 22-20 (Settlement)	N/A
Blackstone Gas Company	D.P.U. 13-58  (Settlement)	N/A
Fitchburg Gas d/b/a Unitil	D.P.U. 23-81 (Order Issued 6/28/24)	N/A
Boston Gas Company & Colonial Gas Company d/b/a National Grid	D.P.U. 20-120 (Order Issued 9/30/21)	N/A
Liberty Utilities (New England Natural Gas Company) Corp. d/b/a Liberty Utilities	D.P.U. 15-75  (Settlement)	N/A
NSTAR Gas Company d/b/a Eversource Energy	D.P.U. 19-120 (Order Issued 10/30/20)	N/A

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.