Canada's electricity threat: What it really means for US power supply
Despite Ontario's threat to cut electricity exports, experts say US power supply is secure, with economic impacts more likely than blackouts.
Social media speculation has surged following Ontario Premier Doug Ford's warning that "everything is on the table" in the escalating trade dispute with the United States, including potentially halting electricity exports from his province.
However, energy experts say the scenario of Canadian officials plunging American cities into darkness is highly unlikely. The US power grid has sufficient alternative sources to compensate for any loss of Canadian electricity, making economic disruption far more probable than physical blackouts.
Canada exported $3.3 billion worth of electricity to the US in 2025, while importing $1.4 billion back, according to government data. This represents 32.7 terawatt hours of exports against US total generation of 4.43 thousand terawatt hours — a fraction of overall supply.
The primary reason the US imports Canadian power is cost efficiency. If exports stopped, utilities would turn to more expensive domestic sources, driving up electricity prices for consumers. As one energy policy expert noted, "We would see it in the market, we would see it in the prices, but we would not be bereft of electricity."
In an extreme scenario involving severe weather and unexpectedly high demand, large commercial customers like data centers might receive curtailment orders to reduce grid load. Rolling blackouts could theoretically be ordered, but with proper management, customers would receive advance notice.
"On a business-as-usual day, if they were to just turn off the metaphorical switch, most of the impacts would be economic," said one energy institute director. The consensus among experts is clear: Canadian electricity is a convenience, not a necessity, for US power reliability.