About Us

Union Gas Limited, one of Canada's Top 100 Employers for 2017, is a major Canadian natural gas storage, transmission and distribution company based in Ontario with over 100 years of experience and service to customers.

The distribution business serves about 1.4 million residential, commercial and industrial customers in more than 400 communities across northern, southwestern and eastern Ontario.

Union Gas's storage and transmission business offers a variety of storage and transportation services to customers at the Dawn Hub, the largest integrated underground storage facility in Canada and one of the largest in North America.  The Dawn Hub offers customers an important link in the movement of natural gas from Western Canadian and U.S. supply basins to markets in central Canada and the northeast U.S.

Union Gas is an Enbridge company with assets of $8.2 billion and approximately 2,300 employees.

Union Gas Mailing Addresses

Head Office
50 Keil Drive North
PO Box 2001
Chatham, Ontario, Canada
N7M 5M1
Phone: (519) 352-3100 or (800)-265-5230

Customer Account Enquiries