Somewhere in northern Alberta, crude enters a steel tube a metre across and begins a journey it will make at roughly walking pace, nudged along by pump stations humming every hundred-odd kilometres, toward refineries in the American Midwest and Gulf Coast. That tube, Enbridge’s Mainline, is the single most important object in the Canada–United States energy relationship. In 2025 it ran at a record of roughly 3.1 million barrels a day, and it has been effectively full for most of two years, its space rationed month after month because shippers want more of it than exists. Around 97 per cent of Canada’s crude-oil exports go to one country. There is no better measure of how welded the two economies are than a Canadian pipe that cannot be built fast enough to move Canadian oil into America.

Enbridge is vast and diversified, liquids pipelines, gas transmission, gas distribution, a growing renewable-power arm, with a secured capital backlog near C$39 billion and more behind it. But its strategic meaning is simpler than its balance sheet. It is the artery: the physical link that fuses two national economies into one energy market.

The tariff exposure that wasn’t

That model was tested when the Trump administration floated tariffs on Canadian energy. On paper, a company whose whole business is shipping Canadian oil south should be acutely exposed to a tax on exactly that flow. Enbridge judged the impact “not expected to be material,” and the reason is instructive. Its pipelines run on take-or-pay contracts: shippers pay for their space whether or not they fill it, which insulates the business from volume swings even when the politics turn choppy. The company that most embodies the cross-border energy tie is, by contract design, one of the steadiest names through a period of trade uncertainty.

The Indigenous ownership template

The more forward-looking chapter has nothing to do with tariffs. In 2025 the Stonlasec8 Indigenous Alliance, a group of 38 First Nations in British Columbia, acquired a 12.5 per cent equity stake in Enbridge’s Westcoast natural-gas system, worth roughly C$700 million, financed with the help of a federal loan guarantee. It has become a reference case for what economic reconciliation in the resource sector can look like: not consultation or benefit-sharing at the margins, but ownership, with the state stepping in to de-risk the financing. Whether the model becomes the norm rather than a landmark exception is one of the more consequential open questions in Canadian resource development.

Building for both sides of the transition

Enbridge is also a study in hedging. It is extending gas infrastructure toward LNG export, moving Canadian and U.S. gas to terminals bound for Asia, while at the same time building wind and solar-plus-storage, some of it contracted to power the data centres of big technology firms. The posture lets it present itself as a player in the energy transition rather than a casualty of it, a foot in the fossil-fuel present and another in the lower-carbon future.

A company this size, sitting astride the most important economic relationship Canada has, is positioning to stay essential whichever way the transition runs: moving the barrels the continent still burns today while wiring up the wind, solar and storage a growing share of demand will run on tomorrow.

Reading list

  • Enbridge record 2025 annual results and 2026 guidance
  • Enbridge announcement: First Nations investment in the Westcoast system (2025)
  • Enbridge Annual Report / Form 10-K (2025)
  • Reporting on proposed U.S. tariffs on Canadian energy and their pipeline implications