chapotraphouse

In the southwest US, a big trend I like has been installing solar panels over parking lots. Sure, there shouldn't be so many parking lots, but covering them with solar panels both provides shade to the vehicles, reducing the amount of energy needed to cool them down with air conditioning, as well as shading the asphalt/concrete which absorbs a ton of heat and radiates it out all night. There are also experiments right now building solar panel shading over the canals that transport water to cities and farms, reducing losses through evaporation. If you drive through the Nevada, Arizona, and California deserts, you'll find huge solar farms along the highways.