This technology seems to hold some promise-
http://www.guardian.co.uk/science/video/2011/feb/11/spain-solar-towers (http://www.guardian.co.uk/science/video/2011/feb/11/spain-solar-towers)
Goes to show that there could be better energy options if government subsidies were alternately directed.
Lots of power from the sun. Just need to get after the ways of collecting it, though I prefer my small scale system to a big government or commercial industry owned system