This is, IMHO, why we should make it a priority to put PV on large commercial / industrial / institutional buildings. Double use of land, serious economies of scale, a maintenance organization already accustomed to dealing with rooftop infrastructure, and a ready customer for the produced energy (which means storage, transmission, and buy-back schemes may not be necessary at all) all together.

Like this: http://www.dlrgroup.com/work/mandalay-bay-solar-array/