Columbia Gas of Massachusetts has 313,000 customers in the state and is owned by Indiana-based NiSource - Reuters
In December 2011, the non-partisan organization Public Campaign criticized NiSource for (((spending $1.83 million on lobbying and not paying any taxes during 2008-2010))), instead getting $227 million in tax rebates, despite making a profit of $1.4 billion, and increasing executive pay by 33% to $11.2 million in 2010 for its top 5 executives.
https://en.wikipedia.org/wiki/NiSource
Internal organization
NiSource operates seven local utilities in its service region:
Northern Indiana Public Service Co. (NIPSCO)
Columbia Gas of Massachusetts (Previously Bay State Gas)
Columbia Gas of Ohio
Columbia Gas of Kentucky
Columbia Gas of Pennsylvania
Columbia Gas of Maryland
Columbia Gas of Virginia
https://en.wikipedia.org/wiki/NiSource
Looks like Wikipedia did all the forensics:
Columbia Gas of Massachusetts, known as Bay State Gas before 2010, is a supplier of retail natural gas to over 300,000 customers in parts of Massachusetts surrounding Springfield, Brockton, and Lawrence. It is a subsidiary of NiSource. The company's operations in New Hampshire and Maine were sold to Unitil Corporation in 2008.
On September 13, 2018, three cities supplied by Columbia - Lawrence, Andover, and North Andover - suffered numerous fires and explosions as a result of problems with a gas main.
https://en.wikipedia.org/wiki/Columbia_Gas_of_Massachusetts