At a minimum, that's one-third of the plants that currently report their greenhouse gas emissions to the Government of Canada. The list is in the public domain. You could go through the list and pick out which one in three plants you're shutting down.
People will posit that you can go to the international market and find 265 million tonnes, but I've been in the market for 11 years and can't find them—and that's before I put any reasonable criteria on the tonnes that I'm looking for.