Improving the lives of more than 1.4 million customers across Ohio

We’re one of Ohio’s leading energy companies, with nearly 1,000 employees dedicated to providing customers with the services they need every day.

Headquartered in Columbus, we are the largest provider of natural gas service in the state. We’re one of the seven energy delivery companies of NiSource, who together provide essential natural gas and electric service to nearly 4 million customers.

Ohio Service Territory Map

We invest in the future

As part of our commitment to customers and communities, we’re investing millions each year to provide safe, reliable natural gas service by expanding our system and replacing aging facilities. We partner with diverse suppliers, and always keep safety, customer satisfaction and sustainability as our key priorities.

Read More

Mother and son in sunny field
4 Employees with hard hats  working in the field together looking at a map

Building strong teams

We’re proud to be named as one of the Best Places to Work by Columbus Business First, and a Top Workplace by the Cleveland Plain Dealer and Toledo Blade. Our parent company, NiSource, is the highest-ranked utility on the Forbes magazine list of America’s Best Large Employers.

We foster an inclusive and diverse workplace where every member of our team is valued, respected and has the opportunity to do great work. Join us and build a career you can point to with pride.

Visit NiSource Careers

Giving back

We support our communities through charitable activities, civic leadership and economic development. Our vision is to improve the quality of life in the areas that we serve by supporting programs that keep us safe, provide food and shelter to those in need, promote economic growth and workforce development, and energy education. In addition, we offer programs such as WarmChoice and PIPP to help customers save.

Learn More

3 male employees with blue Columbia Cares volunteer shirt volunteering at soup kitchen
Columbia Gas of Ohio sign outside of a building

Our leadership team

We are deeply committed to serving customers, working safely and supporting our local communities.

Meet our Leadership

Economic development

Supporting the future growth and development of our communities is vital and we are actively involved and leading economic development opportunities across the state.

Learn More

Woman business owner at work
African American male Columbia Gas employee smiling wearing white hard had with Columbia gas logo

A fully regulated energy provider

We’re regulated by the Public Utilities Commission of Ohio and state and federal agencies. These organizations approve rate schedules and terms that govern our operations. 

See Regulatory Information

Have an emergency?

If you smell gas, think you have a gas leak, have carbon monoxide symptoms or have some other emergency situation, go outside and call 911 and then call us at 1-800-344-4077.