The city of Montreal is at the top.
Montreal is doing an excellent job.
Toronto was leading by virtue of a city-based climate strategy and the closing of the Lakeview coal-fired plant. Toronto's greenhouse gas emissions were more than 30% below 1990 levels as of 2024, I think. That was independently verified. It's an interesting example, because Toronto in that time period boomed economically—in fact, perhaps too much.
Vancouver has also showed historically very good leadership, particularly around buildings, as I mentioned before.