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 U.S. President Donald Trump's trade war.

TORONTO — Ontario's surcharge of 25 per cent on electricity exported to the United States goes into effect today, and the government says it could raise that amount even higher in response to further American escalation.

The Canadian province of Ontario is imposing a 25% surcharge on electricity exports to New York, Michigan and Minnesota to protest against U.S. tariffs, premier Doug Ford said in a statement on Monday.