About Us

About Us

About Columbia Gas of Pennsylvania

Columbia Gas of Pennsylvania, with local headquarters in Canonsburg, Pa., is one of seven energy-distribution companies of NiSource Inc. (NYSE: NI). We serve approximately 430,000 residential, industrial and government customers in 450 communities.

Communities Served

450 communities in 26 counties throughout Pennsylvania's greater York and Western Pennsylvania service territories.


Approximately 430,000 residential, commercial and industrial customers.

Miles of Distribution Main

Approximately 7,350 miles.


Columbia Gas traces its heritage from 1885 and has a long-standing commitment to powering the American experience. We lit the cobbled streets of the 1890s, fueled the steel-making blast furnaces of a nation expanding, and powered the American Dream at the dawn of a new century.

Today, our second century of commitment forges ahead, investing in our region's infrastructure through a long-term, comprehensive initiative to expand, rebuild and install 2,400 miles of state-of-the-art gas lines serving approximately 426,000 customers throughout Pennsylvania. And in its wake, hundreds of new jobs, economic impact, community revitalization, and the assurance of a steady, reliable, safe flow of the energy of the future, natural gas.