Toronto, Mar 10 (AP) Ontario's premier, the leader of Canada's most populous province, announced that effective Monday it is charging 25% more for electricity to 1.5 million Americans in response to US President Donald Trump's trade war.

Ontario provides electricity to Minnesota, New York and Michigan.

“I will not hesitate to increase this charge. If the United State escalates, I will not hesitate to shut the electricity off completely,” Ontario Premier Doug Ford said at a news conference in Toronto.

"Believe me when I say I do not want to do this. I feel terrible for the American people who didn't start this trade war. It's one person who is responsible, it's President Trump.” Ford said Ontario's tariff would remain in place despite the one-month reprieve from Trump, noting a one-month pause means nothing but more uncertainty. Quebec is also considering taking similar measures with electricity exports to the US.

Ford's office said the new market rules require any generator selling electricity to the US 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.” The new surcharge is in addition to the federal government's initial CA$30 billion ($21 billion) worth of retaliatory tariffs have been applied on items like American orange juice, peanut butter, coffee, appliances, footwear, cosmetics, motorcycles and certain pulp and paper products.

Trade war intensifies Trump launched a new trade war last week by imposing tariffs against Washington's three biggest trading partners, drawing immediate retaliation from Mexico, Canada and China and sending financial markets into a tailspin.

Trump later said he has postponed 25% tariffs on many goods from Canada and Mexico for a month, amid widespread fears of a broader trade war.

Ford estimated it will add about CA$100 ($69) a month to the bills of each American affected.

“It needs to end. Until these tariffs are off the table, until the threat of tariffs is gone for good, Ontario will not relent,” Ford said.

Ford said Trump changes his mind every day, but if he continues to attack Canada he will do everything it takes to maximise the pain.

“Republicans, at least the ones I speak to, do not agree with President Trump but they are too scared to go out there and say it publicly,” Ford said. “It's a shame but we need to end this.” Trump has urged US automakers to move auto production from Canada and Mexico to the US. Last week Trump granted a one-month exemption to 25% tariffs on vehicles and auto parts traded through the North American trade agreement USMCA after speaking with leaders of automakers Ford, General Motors and Stellantis. Ontario is the auto sector hub of Canada.

Premier Ford also noted Trump is threatening Canada with steel, aluminum and diary tariffs.

“I will do whatever it takes to maximum the pain against Americans,” Ford said.

Stephen Lecce, Ontario's minister of energy and electrification, said the US needs Canada's power and it could impact other states as well as the three states often resale Ontario's electricity. “It is regrettable we are here,” Lecce said.

Ford calls for export taxes on Canadian oil Trump's trade war and his talk of making Canada the 51st US state have infuriated Canadians, who are booing the American anthem at NHL and NBA games. Some are cancelling trips south of the border, and many are avoiding buying American goods when they can.

Ford's Progressive Conservative government just won reelection by standing up for Canada against Trump.

Ford said the Canadian province of Alberta should agree to put an export tax on oil. Alberta provides 4.3 million barrels of oil a day to the US.

“You want to talk about a Trump card. That will instantly change the game," Ford said. “I know the Americans. If all of a sudden their gas prices go up a dollar a gallon they will lose their minds.” Despite Trump's claim that the US doesn't need Canada, nearly a quarter of the oil America consumes per day comes from Canada. About 60% of US crude oil imports are from Canada, and 85% of US electricity imports as well.

Canada is also the largest foreign supplier of steel, aluminum and uranium to the US and has 34 critical minerals and metals that the Pentagon is eager for and investing for national security. Nearly CA$3.6 billion ($2.7 billion) worth of goods and services cross the border each day. (AP) SCY

Export tariff on electricity raises export charges to the US as a retaliatory trade measure requiring generator surcharges. Ontario requires generators selling electricity to the United States to add a surcharge on export sales as a retaliatory trade measure; the provincial rule targets exports to neighbouring US markets, is contingent on continued US tariff threats, and is intended to raise revenue for provincial support programs while remaining additional to federal retaliatory tariffs.