How many heated sidewalks are there in Montreal?

You know, walkways that just don’t accumulate snow? Maybe they have coils under them. Maybe waste heat from the building.

The only one I know of was in Westmount, on Redfern, in the Reader’s Digest building.

Are there any others?

Should we have more? Are any other cities using them? Could they ever make sense on a large scale? Solar panel heated bike paths?