I reported on a solar tower project before. Here is an updates.
The company EnviroMission has bought the land and recieved funding from Australia Federal government to build a $700 million solar tower of about 1000m high. The base will be 5km across and produces 300,000 megawatts of power rising to 9.5 million megawatts in 10 years.
On setback of solar tower is the expensive concret chimney. Inventor Christos Papageorgiou has created a lighter than air solar chimney which will cost around the same as comparable wind turbine making solar tower an economically competitive alternative.