Where can one find the names of natural gas utilities companies in Ottawa?

Here are some natural gas utilities companies that operate in Ottawa:

Enbridge Gas Distribution Inc.

Website: https://www.enbridgegas.com/

Union Gas Limited

Website: https://www.uniongas.com/

Ottawa Community Housing Corporation (OCHC)

Website: https://www.ochcorp.ca/

Veridian Connections

Website: https://www.veridianconnections.ca/