About Us

Company Overview

Headquartered in Houston, Texas, Columbia Pipeline Group companies own and operate about 15,000 miles of strategically located interstate natural gas pipelines, integrated with one of the largest underground storage systems in North America. From the Gulf Coast to the Midwest, Mid-Atlantic and Northeast, our systems connect premium natural gas supplies with some of the nation’s strongest energy markets, serving customers in 16 states.

More than one trillion cubic feet of natural gas flows through our pipeline and storage systems each year, providing competitively priced, clean energy for millions of homes, businesses and industries.


Columbia Pipeline Group companies:

Central Kentucky Transmission 
 Columbia Gas Transmission
Columbia Gulf Transmission 
 Crossroads Pipeline
Hardy Storage (partner)
Millennium Pipeline (partner)
NiSource Energy Ventures
NiSource Midstream Services