But Adam Scott, a senior adviser at the environmental group Oil Change International, had a different interpretation. The province's environmental regulation agency quickly suspended hearings into the project, which were meant to conduct an environmental assessment of the risks and benefits and produce a report to Quebec's environment minister.
Calgary-based TransCanada announced last month it was putting the project's permitting process on hold because of a new greenhouse gas emission test the Liberals inserted into the National Energy Board-led (NEB) regulatory process.
"This is proof positive of two things - first, that climate action and pipelines don't mix". The project was cancelled Thurs.
The pipeline's importance has somewhat diminished for TransCanada since the United States this year approved Keystone XL pipeline, which would run from Alberta to USA refineries, but supporters said they were "extremely disappointed" by the decision.
As Energy East supporters lamented the loss of jobs and revenue, Indigenous opponents, environmental activists and a number of Quebec politicians celebrated.
The B.C. government doesn't share her view, however, and is now part of a court challenge against Trans Mountain being heard this week.
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"Realizing that Energy East would never be allowed if its full climate impact was accounted for, TransCanada has walked away from the project", he said in a statement.
In late August, the National Energy Board - an independent regulatory agency that oversees global and inter-provincial oil and gas pipelines - announced it would consider upstream and downstream greenhouse gas emissions in determining whether the Energy East pipeline was in the national interest.
Suncor Energy Inc. (TSX:SU), Canada's largest oil, gas and refining company by market capitalization, had hoped Energy East would allow it to replace US and offshore oil at its 137,000-barrel-per-day Montreal refinery, said spokeswoman Sneh Seetal.
The move is a blow to Canada's oil sands industry and the ailing economy of the New Brunswick province where the pipeline would have terminated. Several worldwide companies have sold off oilsands projects in the past year.
May 13, 2015: More than 60 organizations call on the National Energy Board to suspend TransCanada's application for the Energy East Pipeline.
September 9, 2016: The National Energy Board sidelines all three Energy East reviewers following complaints that two of them met privately with a TransCanada consultant the year before and discussed the proposed oil pipeline.
"Justin Trudeau and (Natural Resources Minister) Jim Carr stood behind a climate review for Energy East, and that's admirable, but it also makes me wonder why they don't have the same concerns about Kinder Morgan, a pipeline they approved without considering the climate impact", read her emailed comments. Speaking to reporters Thursday morning in Montreal, he said the decision was also the result of leadership from his city and other municipalities who insisted on getting reforms to the National Energy Board to ensure a fair process.