TransCanada Eyes Canadian Mainline Capacity Expansion

Map courtesy of TransCanada

TransCanada Corp. plans to apply to Canada’s National Energy Board (NEB) to expand the capacity of the Canadian Mainline System through its Maple Compressor Station near Vaughan, Ontario. The US$128 million project is underpinned by 15-year contracts and will increase capacity to the southern Ontario market plus delivery to Atlantic Canada via the Trans Quebec & Maritimes Pipeline and Portland Natural Gas Transmission Systems.

Currently, the 10,634-mi. (14,114-km) pipeline sources natural gas from the Western Canada Sedimentary Basin and supplies it to Ontario and other markets. The proposed project will add incremental compression and associated facilities on the Canadian Mainline to move an additional approximately 80 MMcfd (2 x 106 m3/d) of natural gas — enough to supply more than 300,000 homes on an annual basis, the company said.

Once TransCanada has completed its tariff process for capacity additions, an application to approve the associated facilities is expected to be filed with NEB in early 2018, to meet a November 1, 2019 in-service. This new investment is part of a US$400 million program that TransCanada is undertaking to support additional transportation of Canadian and US gas along the company’s Canadian Mainline System.

“This expansion will help ensure Ontario customers receive the natural gas they need over the long-term and meet growing market demand in Atlantic Canada,” said Karl Johannson, TransCanada’s executive vice president and president, Canada and Mexico natural gas pipelines and energy. “This investment further affirms our commitment to build key natural gas infrastructure in Canada and shows the importance of the Canadian Mainline to efficiently and competitively meet the transportation needs of our customers.”