W  Walmart, Pocono Race Way and The Vatican all have solar farms. $$

1.  Wal-Mart (sky high electricity bills and many stores with acreage right behind them make Wal-Mart a early mover)
The Pocono Race Way ( public entertainment venues use a lot of electricity, Pocono Raceway reached the finish line first and saved a bundle )
The Vatican (valuable real-estate which won’t be relocating or selling their buildings any time soon should do as The Pope has done)