They covered most of the parking lots with solar cells a few years back at nearby Michigan State. The economics weren't there, but as a friend who worked there pointed out they viewed it as research.

It's great that when it snows you don't get nearly as much of the white stuff on your vehicle. But when it snows energy production slows to a crawl. We have a lot of snowy days a third of the year.

I wonder if there’s any situation where running heaters to keep the panels clear ends up with positive electricity generation. If nothing else it would help after the fact.