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Reduce Your Columbia Gas Bill

It’s never been easier to save on your next energy bill. See the lowest rates, compare to your current plan, and switch here.

NiSource, the parent company of Columbia Gas, provides natural gas to residential, commercial and industrial customers in seven states, including the deregulated states of Pennsylvania, Ohio and Kentucky. It was recently designated one of the World's Most Ethical Companies.

NiSource provides electric energy to nearly 500,000 customers, all located in northern Indiana. NiSource’s electric operations include power generation, transmission and local distribution, as well as wholesale and electric transmission transactions. NiSource uses both traditional and renewable generation sources, including natural gas, hydroelectric, wind, and coal generated supplies, providing a total system operating net capability of more than 3,000 megawatts.

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