Ontario is preparing to complete a feasibility study by the end of 2026 for a new pipeline project named the Northern Shield Energy Corridor, Premier Doug Ford announced Tuesday. The proposal, which aims to develop east-west energy infrastructure, is being led by the federally owned Trans Mountain Corporation, with Pembina Pipeline Corporation holding a 10-percent stake.

Ford described the project as a "win, win, win" for Ontario, Alberta, and Canada, emphasizing the potential long-term financial returns and job creation linked to manufacturing and supply chains across the country. He expressed openness to private sector participation but indicated that Ontario is prepared to provide financial backing to advance the proposal.

The Northern Shield pipeline plan aligns with a memorandum of understanding signed last year by Alberta, Ontario, and Saskatchewan to build new energy and trade infrastructure. However, Manitoba—which lies along the proposed route—is not currently part of the agreement. Ford noted that the pipeline would use exclusively Canadian steel and could bolster industries in Sarnia, home to several refineries and related facilities. He also mentioned prospects for Manitoba and the Manitoba Crown Indigenous Corporation to explore an extension of the pipeline to the Port of Churchill.

Saskatchewan Premier Scott Moe publicly supported the initiative, while Manitoba Premier Wab Kinew’s office refrained from commenting directly on the pipeline, instead emphasizing the province’s focus on expanding the Port of Churchill. A spokesperson for Kinew stressed the importance of working collaboratively with northern communities, Indigenous nations, and the Manitoba Crown Indigenous Corporation to advance regional development.

Despite endorsements from some provincial leaders, critics highlight uncertainties surrounding the Northern Shield proposal. Janetta McKenzie, director of the oil and gas program at the clean-energy think tank Pembina Institute, described the plan as lacking key details, including the identification of a private-sector lead. She also pointed to shifting global trends as countries reduce dependence on fossil fuel imports, calling the business case “shaky.”

Similarly, TD Cowen analysts expressed cautious skepticism in a recent research note. While acknowledging the political intent behind the project, they noted that several other pipeline proposals underway feature more compelling economic and strategic advantages.

The federal government’s Major Projects Office is currently prioritizing the expansion of the Trans Mountain pipeline, which spans approximately 1,150 kilometres from Edmonton to the West Coast and was completed in 2024 at a cost of approximately $34 billion. Ottawa has not formally committed to the Northern Shield project but indicated it will review the upcoming feasibility study and ongoing Indigenous consultations led by Ontario and Alberta.

The cost of constructing a new east-west pipeline could reach tens of billions of dollars, varying widely depending on the final route and scale. Past proposals such as the now-canceled Energy East pipeline, which would have stretched over 4,500 kilometres to Canada’s East Coast, carried estimated price tags near $19 billion. Alberta’s recent West Coast pipeline submission to federal authorities projects a cost range between $35 billion and $44 billion.

As Ontario advances its feasibility study in collaboration with Alberta and Trans Mountain Corporation, questions remain about the project’s viability amid changing market conditions, competing infrastructure priorities, and the role of Indigenous partners in future developments.