One of the problems with global warming is that asphalt parking lots absorb huge amounts of heat on summer days creating microclimate heating. I hate to park my car in the sun especially when I go food shopping and buy frozen food which can melt on the way home because of the heat in the car. What if: parking lot could be covered with a roof of PV solar panels. If the average parkinglot is about an acre, it could produce about 700,000 watts a year, maybe not enough to power all the stores but when sold back to the local utility it would pay for itself in a matter of a few years. There would be little or no need for snow removal in areas where this is a problem. Maintaing the parking lot would be reduced because of the protection from the weather. No rain, no ice, no snow and all that electricity.