Using figures for England last year. A 10 square metre solar panel array can produce 1MWh per annum. 10^5 Wh per square metre per annum Area of England is 130,000 square kilometers. 1.3 * 10^11 square meters. Between 1 and 2% of that area consists of buildings. Use the lower figure gives 1,3 * 10^9 sq metres. Covering all the buildings with solar panels would give 1.3 * 10^9 * 10^5 =3D 1.3 *10^ 14 wH Total electricity consumption in 2013 England was ~300TwH =3D 3 * 10^14wH. So roofing every building with solar panels could generate ~40% of Englands electricity. Similar to Kerry's figures but a bit less output from the panels given our climate. On 27 June 2014 15:59, Richard R. Pope wrote: > Kerry, > I don't have the paper any more. Besides you would have to do the > research all over again. The numbers from 2001 no longer apply as the > energy demands and the generation sources in this country have changed > dramatically over the last thirteen years. > The department of energy will have most of the numbers that you > would need and yes you can trust them. If you don't, you can research > all of the different companies that are generating all of the power in > this country. It is a lot of work and it would take a minimum of about 2 > months worth of time at 60 hours per week. That is what it took back in > 2001 to put my paper together for my college class on engineering. > So go for it. I'm not going to do the work for you. Like I said I > don't have the paper any more. I don't have any of my school work from > back then. And the numbers just would not apply to today's country. But > don't just take my word for it. Go do the research for yourself. Be a > leader instead of a sheep. > Thanks, > rich! > > On 6/27/2014 10:44 AM, Kerry wrote: > > Still no sources, though. > > > > Solar energy per square meter, realistically - 380WH / day EEVblog #632 > > US energy use - 334,000.000 BTUs/person/year > > http://en.wikipedia.org/wiki/Energy_in_the_United_States > > US population - 318,000,000 http://en.wikipedia.org/wiki/United_States > > 1 BTU =3D 0.293WH - http://en.wikipedia.org/wiki/British_thermal_unit > > Total energy used - 3.11x10^16WH 334,000.000*318,000,000*0.293 > > Area needed - 2.24x10^11 square meters 3.11x10^16/(380*365) > > Area needed - 224000 square km > > Area of US - 9,830,000 square km > http://en.wikipedia.org/wiki/United_States > > % of land needed -2.28% > > > > > > > > > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 __________________________________________ David C Brown 43 Bings Road Whaley Bridge High Peak Phone: 01663 733236 Derbyshire eMail: dcb.home@gmail.com SK23 7ND web: www.bings-knowle.co.uk/dcb --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .