Yes. It's a valid technique to keep the temperature on a fleet controlled so you don't waste time cooling down a bus later in the day before picking up students

Yes. It's a valid technique to keep the temperature on a fleet controlled so you don't waste time cooling down a bus later in the day before picking up students. Solar panels let them make it basically free. And the solar panels on the fixed roofs of the power stations will recoup their cost over time far longer than potential lifespan of a vehicle.