Enviromission of Australia wants to build a $342million 200 MW "solar chimney" in southwestern New South Wales. When complete, the structure will be just short of 1km high, almost twice as high as the tallest building in the world.
The "solar chimney" would feature a large greenhouse covering 13sqkm. As the hot air rises, it would escape up a 990m tower in the centre of the structure. Wind turbo-generators mounted in the chimney would convert this 50km-an-hour rush of hot air into electricity. Enviromission's proposal has yet to be approved.
This idea was reported back in 2001 and they were hoping then to break ground a year ago:
A demonstration protype was built in the 1980s in Spain which ran successfully for two years. If built the Australian solar chimney will be over 40 times bigger. The great thing about this concept is it can run almost constantly not just when the sun is out.
I hope this gets approved fast these are the kind of visionary projects we need to replace fossil fuels.
Here's the latest news on this project: