Ford’s office said the new market rules require any generator selling electricity to the U.S. to add a 25% surcharge. Ontario’s government expects it to generate revenue of $300,000 Canadian dollars ($208,000) to CA$400,000 ($277,000) per day, “which will be used to support Ontario workers, families and businesses.”

US President Donald Trump announced on 11 March that he would impose a 50% tariff on some Canadian goods in retaliation for the 25% electricity tax levied by the Canadian province of Ontario on the US.