A tower of power: Bizarre half-mile-high structure could produce as much electricity as 100,000 wind turbines/Daily Mail

Permission has been granted to build the Solar Wind Energy Tower
This huge structure will be based near the city of San Luis, Arizona
The tower is half a mile tall and will be built in the middle of the desert
To generate power water is sprayed in and ‘heavy air’ is circulated
This can apparently produce as much power as the Hoover Dam

http://www.dailymail.co.uk/sciencetech/article-2637446/A-tower-power-Bizarre-half-mile-high-structure-produce-electricity-Hoover-Dam.html