In reply to Esa Ruoho's message of Thu, 12 May 2011 11:54:10 +0300: Hi, [snip] >Mankind currently only harvests a minuscule >fraction<http://www.dailytech.com/Company+Poised+to+Blanket+Former+Sears+Tower+With+2+MW+of+Solar+Panels/article21194.htm> >of >the estimated 12.2 billion kilowatt-hours of solar energy that hits the >Earth every day >[source<http://www.ecoworld.com/energy-fuels/how-much-solar-energy-hits-earth.html>].
This is too low by a factor of about 300000. The actual Solar energy received daily is 4E15 kWh (however some considerable proportion of this is reflected &/or reradiated). Regards, Robin van Spaandonk http://rvanspaa.freehostia.com/project.html
