Solar updraft plants heat air which is drawn up the chimney-like tower.
US utility takes option to buy giant solar updraft tower
09 May 2011 04:37 GMT
AGS lends $30m for work to start on 400MW updraft tower
13 January 2011 07:12 GMT
Solar power looks to catch the updraft
05 March 2010 10:16 GMT
By Oliver Wagg, Brisbane
Thursday, January 12 2012
Updated: Sunday, November 25 2012
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