[dalereed]

" Hell if Walmart did all their parking lots alone they could probably generate enough to at least take a chunk out of their air conditioning costs..."

Only if nobody drove a car to Walmart to do their shopping and kept the parking lot empty!

[Rockingham]

Commercial building roofs will be the first large uses because businesses have investment budgets and MBAs to run the numbers. Covering parking lots assumes near impossible durability for a thin film.