I'd heard of this idea before; Lowem just linked to the SolarMission project site and it looks like Australia may actually build one of these.
Assuming the first one works out, (It is planned to be twice as tall as the tallest tower in the world), can we build 1000 of these instead of 1000 new nuclear plants?
Two hundred megawatts, only emission, hot air. Good stuff. I wonder how many megawatts Fox News generates every day?