‘Big vulnerability’: How Ontario and Quebec became reliant on U.S. oil and gas

From the Canadian Energy Centre

ARC Energy Institute leaders highlight the need for a new approach in a new reality

Despite Canada’s status as one of the world’s largest oil and gas producers, more than half of the country’s own population does not have true energy security – uninterrupted, reliable access to the energy they need at an affordable price.

Even though Western Canada produces much of the oil consumed in Ontario and Quebec, in order to get there, it moves on pipelines that run through the United States.

“It’s only energy secure if the Americans are our partners and friends,” leading energy researcher Jackie Forrest said on a recent episode of the ARC Energy Ideas podcast.

Amid rising trade tensions with the United States, energy security is taking on greater importance. But Forrest said the issue is not well understood across Canada.

“The concern is that in the worst-case scenario where the Americans want to really hurt our country, they have the ability to stop all crude oil flows to Ontario,” she said.

That action would also cut off the majority of oil supply to Quebec.

The issue isn’t much better for natural gas, with about half of consumption in Ontario and Quebec supplied by producers in the U.S.

“Tariffs or no tariffs, there is a real vulnerability there,” said Forrest’s co-host Peter Tertzakian, founder of the ARC Energy Research Institute.

The issue won’t go away with increased use of new technology like electric cars, he said.

“This isn’t just about combustion in engines. It’s about securing a vital commodity that is an input into other parts of our manufacturing and sophisticated economy.”

Oil: The Enbridge Mainline

The Enbridge Mainline is the main path for oil from Western Canada to reach refineries in Ontario and Quebec, according to the Canadian Association of Petroleum Producers (CAPP).

Originating in Edmonton, Alberta, the Enbridge Mainline moves crude oil, refined products, and natural gas liquids through a connected pipeline system. At Superior, Wisconsin, the system splits into Line 5, going north of Lake Michigan, and Lines 6, 14, and 61, going around the southern tip of the lake. The two routes then coalesce and terminate in Sarnia, Ontario, where it is interconnected with Line 9, which is terminated in Montreal, Quebec. Source: Canadian Association of Petroleum Producers

Originally built in 1950 from Edmonton to Superior, Wisconsin, in 1953, it was extended to Sarnia, Ontario through a segment known as Line 5.

CAPP said that at the time, politicians had pushed for an all-Canadian path north of the Great Lakes to increase energy security, but routes through the U.S. were chosen because of lower project costs and faster timelines.

In 1979, an extension of the pipeline called Line 9 opened, allowing oil to flow east from Sarnia to Montreal.

“Line 9 was built after the oil crisis and the OPEC embargo as a way to bring western Canadian crude oil into Quebec,” Forrest said.

But by the 1990s – before the massive growth in Alberta’s oil sands – there was a lack of crude coming from Western Canada. It became more economically attractive for refineries in Quebec and Ontario to import oil from overseas via the St. Lawrence River, CAPP said.

A reversal in 1999 allowed crude in Line 9 to flow west from Montreal to Sarnia.

By the 2010s, the situation had changed again, with production from the Alberta oil sands and U.S. shale plays surging. With more of that oil available, the offshore crude was deemed to be more expensive, Forrest said.

In 2015, Line 9 was reversed to send oil east again from Sarnia to Montreal, displacing oil from overseas but not resolving the energy security risk of Canadian pipelines running through the U.S.

CAPP said the case of Line 5 illustrates this risk. In 2020, the Governor of Michigan attempted to shut down the pipeline over concerns about pipeline leak or potential oil spill in a seven-kilometre stretch under the Straits of Mackinac.

Line 5 has been operating in the Straits for 72 years without a single release.

Enbridge is advancing a project to encase the pipeline in a protective tunnel in the rock beneath the lakebed, but the legal battle with the State of Michigan remains ongoing.

Natural gas: The TC Canadian Mainline

The natural gas pipeline now known as TC Energy’s Canadian Mainline from Alberta was first built in 1958.

The TC Canadian Mainline (red dashed line) transports natural gas produced in Western Canada to markets in Eastern Canada. Red lines show pipelines regulated by the Canada Energy Regulator, while black lines show pipelines regulated by the United States. Source: Canadian Association of Petroleum Producers

“This pipeline brought gas into Ontario, and then it was extended to go into Quebec, and that was good for a long time,” Forrest said.

“But over time we built more pipelines into the United States, and it was a better economic path to go through the United States.”

The Mainline started running not at its full capacity, which caused tolls to go up and made it less and less attractive compared to U.S. options.

According to CAPP, between 2006 and 2023 the Mainline’s deliveries of gas from Western Canada to Ontario and Quebec were slashed in half.

“We should have said, ‘We need to find a way for this pipeline, over our own soil, to be competitive with the alternative’. But we didn’t,” Forrest said.

“Instead, we lost market share in Eastern Canada. And today we’re in a big bind, because if the Americans were to cut off our natural gas, we wouldn’t have enough natural gas into Quebec and Ontario.”

A different approach for a new reality

Forrest said the TC Mainline, which continues to operate at about half of its capacity, presents an opportunity to reduce Canada’s reliance on U.S. natural gas while at the same time building energy security for oil.

“Those are the same pipes that were going to be repurposed for oil, for Energy East,” Tertzakian said.

“The beauty of the thing is that actually, I don’t think it would take that long if we had the will… It’s doable that we can be energy secure.”

This could come at a higher cost but provide greater value over the long term.

“That’s always been the issue in Canada, when it comes to energy, we always go with the cheapest option and not the most energy secure,” Forrest said.

“And why? Because we always trusted our American neighbor to never do anything that will impact the flow of that energy. And I think we’re waking up to a new reality.”

Related Topics:#CanadianEnergyCentre #DeborahJaremko CanadaUSEnergy CanadaUSPipelines OntarioUSEnergy QuebecUSEnergy

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The beauty of economic corridors: Inside Alberta’s work to link products with new markets

Published on April 1, 2025

Todayville

From the Canadian Energy Centre

Q&A with Devin Dreeshen, Minister of Transport and Economic Corridors

Devin Dreeshen, Alberta’s Minister of Transportation

and Economic Corridors.

CEC: How have recent developments impacted Alberta’s ability to expand trade routes and access new markets for energy and natural resources?

Dreeshen: With the U.S. trade dispute going on right now, it’s great to see that other provinces and the federal government are taking an interest in our east, west and northern trade routes, something that we in Alberta have been advocating for a long time.

We signed agreements with Saskatchewan and Manitoba to have an economic corridor to stretch across the prairies, as well as a recent agreement with the Northwest Territories to go north. With the leadership of Premier Danielle Smith, she’s been working on a BC, prairie and three northern territories economic corridor agreement with pretty much the entire western and northern block of Canada.

There has been a tremendous amount of work trying to get Alberta products to market and to make sure we can build big projects in Canada again.

CEC: Which infrastructure projects, whether pipeline, rail or port expansions, do you see as the most viable for improving Alberta’s global market access?

Dreeshen: We look at everything. Obviously, pipelines are the safest way to transport oil and gas, but also rail is part of the mix of getting over four million barrels per day to markets around the world.

The beauty of economic corridors is that it’s a swath of land that can have any type of utility in it, whether it be a roadway, railway, pipeline or a utility line. When you have all the environmental permits that are approved in a timely manner, and you have that designated swath of land, it politically de-risks any type of project.

CEC: A key focus of your ministry has been expanding trade corridors, including an agreement with Saskatchewan and Manitoba to explore access to Hudson’s Bay. Is there any interest from industry in developing this corridor further?

Dreeshen: There’s been lots of talk [about] Hudson Bay, a trade corridor with rail and port access. We’ve seen some improvements to go to Churchill, but also an interest in the Nelson River.

We’re starting to see more confidence in the private sector and industry wanting to build these projects. It’s great that governments can get together and work on a common goal to build things here in Canada.

CEC: What is your vision for Alberta’s future as a leader in global trade, and how do economic corridors fit into that strategy?

Dreeshen: Premier Smith has talked about C-69 being repealed by the federal government [and] the reversal of the West Coast tanker ban, which targets Alberta energy going west out of the Pacific.

There’s a lot of work that needs to be done on the federal side. Alberta has been doing a lot of the heavy lifting when it comes to economic corridors.

We’ve asked the federal government if they could develop an economic corridor agency. We want to make sure that the federal government can come to the table, work with provinces [and] work with First Nations across this country to make sure that we can see these projects being built again here in Canada.

Alberta

Alberta’s massive oil and gas reserves keep growing – here’s why

Published on March 24, 2025

Todayville

From the Canadian Energy Centre

By Deborah Jaremko

Q&A with Mike Verney, executive vice-president, McDaniel & Associates

New analysis commissioned by the Alberta Energy Regulator has increased the province’s natural gas reserves by 440 per cent, bumping Canada into the global top 10.

Alberta’s oil reserves – already fourth in the world – also increased by seven billion barrels.

The report was conducted by Calgary-based consultancy McDaniel & Associates. Executive vice-president Mike Verney explains what it means.

CEC: What are “reserves” and why do they matter?

Verney: Reserves are commercial quantities of oil and gas to be recovered in the future. They are key indicators of future production potential.

For companies, that’s a way of representing the future value of their operations. And for countries, it’s important to showcase the runway they have in terms of the future of their oil and gas.

Some countries that have exploited a lot of their resource in the past have low reserves remaining. Canada is in a position where we still have a lot of meat on the bone in terms of those remaining quantities.

CEC: How long has it been since Alberta’s oil and gas reserves were comprehensively assessed?

Verney: Our understanding is the last fully comprehensive review was over a decade ago.

CEC: Does improvement in technology and innovation increase reserves?

Verney: Technological advancements and innovation play a crucial role in increasing reserves. New technologies such as advanced drilling techniques (e.g., hydraulic fracturing, horizontal drilling), enhanced seismic imaging and improved extraction methods enable companies to discover and access previously inaccessible reserves.

As these reserves get developed, the evolution of technology helps companies develop them better and better every year.

CEC: Why have Alberta’s natural gas reserves increased?

Verney: Most importantly, hydraulic fracturing has unlocked material volume, and that’s one of the principal reasons why the new gas estimate is so much higher than what it was in the past.

The performance of the wells that are being drilled has also gotten better since the last comprehensive study.

The Montney competes with every American tight oil and gas play, so we’re recognizing the future potential of that with the gas reserves that are being assigned.

In addition, operators continue to expand the footprint of the Alberta Deep Basin.

CEC: Why have Alberta’s oil reserves increased?

Verney: We discovered over two billion barrels of oil reserves associated with multilateral wells, which is a new technology. In a multilateral well, you drill one vertical well to get to the zone and then once you hit the zone you drill multiple legs off of that one vertical spot. It has been a very positive game-changer.

Performance in the oil sands since the last comprehensive update has also gone better than expected. We’ve got 22 thermal oil sands projects that are operating, and in general, expectations in terms of recovery are higher than they were a decade ago.

Oil sands production has grown substantially in the past decade, up 70 per cent, from two million to 3.4 million barrels per day. The growth of several projects has increased confidence in the commercial viability of developing additional lands.

CEC: What are the implications of Alberta’s reserves in terms of the province’s position as a world energy supplier?

Verney: We’re seeing LNG take off in the United States, and we’re seeing lots of demand from data centers. Our estimate is that North America will need at least 30 billion cubic feet per day of more gas supply in the next few years, based on everything that’s been announced. That is a very material number, considering the United States’ total natural gas production is a little over 100 billion cubic feet per day.

In terms of oil, since the shale revolution in 2008 there’s been massive growth from North America, and the rest of the world hasn’t grown oil production. We’re now seeing that the tight plays in the U.S. aren’t infinite and are showing signs of plateauing.

Specifically, when we look at the United States’ largest oil play, the Permian, it has essentially been flat at 5.5 million barrels per day since December 2023. Flat production from the Permian is contrary to the previous decade, where we saw tight oil production grow by half a million barrels per day per year.

Oil demand has gone up by about a million barrels a day per year for the past several decades, and at this point we do expect that to continue, at the very least in the near term.

Given the growing demand for oil and the stagnation in supply growth since the shale revolution, it’s expected that Alberta’s oil sands reserves will become increasingly critical. As global oil demand continues to rise, and with limited growth in production from other sources, oil sands reserves will be relied upon more heavily.