tag:blogger.com,1999:blog-3220437670593464112.post5997870861893572058..comments2023-11-02T11:56:37.309+00:00Comments on Clean Ventures: Sustainable energy - without the hot airTim Chapmanhttp://www.blogger.com/profile/16453592717592756707noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-3220437670593464112.post-14558270833173675182009-04-20T09:37:00.000+01:002009-04-20T09:37:00.000+01:00Absolutely right. The tech companies still like to...Absolutely right. The tech companies still like to boast about getting an extra percent when they can, though.Tim Chapmanhttps://www.blogger.com/profile/16453592717592756707noreply@blogger.comtag:blogger.com,1999:blog-3220437670593464112.post-82284265486132203722009-04-20T09:27:00.000+01:002009-04-20T09:27:00.000+01:00A quick point - the 20% solar effiency isn't pulle...A quick point - the 20% solar effiency isn't pulled out of thin air, but a realistic figure which we are very unlikely to significantly exceed, due to the fundamental photophysics of Silicon. Look up the Shockley-Queisser limit - about 30% effiency is the absolute maximum for simgle-junction photovoltaics.Alexnoreply@blogger.com