The first piece here to mention is that it's a federal policy, so there's a federal backstop. Provinces decide if they either take on their own system and comply with that federal backstop, or implement it according to their own policy design and circumstances.
The thing I'd like to mention here is that the backstop relies wholly on ministerial discretion, and it's unclear under which circumstances, if any, it's being implemented. If we want to make sure that we're seeing this revenue being directed to green projects but also alleviating consumer costs of energy—as we're facing right now—that backstop being implemented more thoroughly and systematically would be very important.