Please follow the links below to each Company's website with currently effective tariffs:


Bay State Gas Company d/b/a Columbia Gas of Massachusetts:


Berkshire Gas Company: all customers follow the instructions below.

  1. Click on "residential" or "commercial"
  2. Choose your rate class


Blackstone Gas Company:




National Grid:


Liberty Utilities (New England Natural Gas Company) Corp. d/b/a Liberty Utilities:


NSTAR Gas Company d/b/a Eversource Energy


This information is provided by the Department of Public Utilities