Growing natural gas use by power generation and industrial plants is behind a C$509 million ($382 million) capacity expansion approved Thursday for TC Energy Corp.’s Nova Gas Transmission Ltd. (NGTL) network in Alberta and British Columbia.


Delivery contracts for about 310 MMcf/d support the addition of 85 kilometers (51 miles) of 48-inch-diameter pipe, a project named the Edson Mainline Expansion after the nearest Alberta town.

The Canada Energy Regulator (CER) endorsed technical, environmental and community aspects of the project and recommended final approval by the federal cabinet in Ottawa after it completes consultations with native tribes affected by construction.

The regulatory review included tribal participation grants totaling C$1.36 million ($1 million). The...