Columbia Gas of Maryland
P.O. Box 70322 , Philadelphia, Pennsylvania, United States

We’re one of western Maryland’s leading energy companies, with a highly trained team dedicated to providing our customers with the essential energy services they need every day. 

Providing essential service to western Maryland

We provide natural gas service to customers in Maryland’s Garrett, Allegany and Washington counties. 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.

We invest in the future

As part of our commitment to our 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.

Building strong teams

We're proud to be part of NiSource, a company that has been named by Forbes magazine as one of America's Best Large Employers three years in a row.  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.

Giving back

We have been an integral part of the communities we serve for more than 100 years. We volunteer and provide charitable support to organizations that are working to make a difference in the communities we serve. In addition, our energy efficiency options help customers save energy and money, while our payment assistance programs help qualifying customers make ends meet.