The premier of Quebec previously told Politico the province would similarly consider stamping tariffs on their power exports to New England.
Ford also vowed to cut electricity exports to U.S. border states, if necessary.
"If they want to try to annihilate Ontario, I will do everything — including cut off their energy with a smile on my face," Ford told reporters Monday at a mining convention in downtown Toronto, the Toronto Sun reported. "They rely on our energy, they need to feel the pain. They want to come at us hard, we're going to come back twice as hard."
Ford added that he will direct the province's energy producers to shut down the exports entirely if Trump moves ahead with even more tariffs on April 2.