It seems to me Disneyland could cut some energy usage and have a solid marketing point if they put solar panels on the roofs of show buildings and other buildings. Many companies, like Google and Wal-Mart, etc., that have large buildings with lots of roof space are doing this.
Disneyland has half a dozen attractions, lots of backstage buildings, plus the current parking structure and future parking that could be retrofitted with solar panels. I realize there are structural issues involved, but they could add panels during major ride refurbishments.
Of course, Tomorrowland would be the place to showcase it. And Disneyland "going green" could be a big marketing campaign.