The US DOE just released a press statement regarding a much improved solar cell technology. Below is are links to the press release and a summary (from slashdot.org<http://hardware.slashdot.org/article.pl?sid=06/12/06/027228&from=rss> ). Press release: http://www.energy.gov/news/4503.htm Solar Cell Achieves 40% Efficiency Fysiks Wurks found on the U.S. Department of Energy website news of a breakthrough in solar energy efficiency <http://www.energy.gov/news/4503.htm>. From the article: *"...with DOE funding, a concentrator solar cell produced by Boeing-Spectrolab has recently achieved a world-record conversion efficiency of 40.7 percent, establishing a new milestone in sunlight-to-electricity performance."* A page linked from Wikipedia's article on solar energy<http://en.wikipedia.org/wiki/Solar_energy>calculates the land area that would need to be covered by solar collectors<http://www.ez2c.de/ml/solar_land_area/>at 8% efficiency to meet the world's energy needs (using 2003 figures). At 40% efficiency, it looks like a square 265 miles on a side in the American southwest would do it. - Sean Bell Principal Engineer Green Liquid and Gas Technologies, Inc.