Take 300,000 computer-controlled mirrors, each 7 feet high and 10 feet wide. Control them with computers to focus the Sun's light to the top of 459-feet towers, where water is turned to steam to power turbines. Bingo: you have the world's biggest solar power plant, the Ivanpah Solar Electric Generating System Long-mired by regulatory issues and legal tangles, the enormous solar plant–jointly-owned by NRG Energy Brightsource Energy and Google-, opened for business today.From the official News Release Sprawling across a staggering 5 square miles of federal land near the California-Nevada border, it looks damn beautiful. Just look at these amazing images: