I Just watched a bit of 'By Any Means' with charley Booreman, he sayed (as he was about to get into a solar powered car) that Australia produces on its hottest day of the year enough solar energy IN A DAY to power the world for a year!!! Now, thats unrealistic to capture it all but it gives you an idea just how powerfull the sun is. Giving that Australia is 7,741,220 Km², the Average temp is around 19C and the hottest around 36C (year on year, without freak heat) we can assume the Hottest is around double the average thus giving us the principal that through the year we would need 2 days of sunlight to generate the energy for the world. Considering this, if we said we could have a solar panel of a certain size permanently fixed, the size must be the area of Australia/time required. Either - All of australia for just 2 days a year, All of the year with the Size of austalia/ 183 (year in half) We there for need a solar panel 42301.7km² running all year round at the average temp of 19C to generate enough energy for the world. I found Solar Panels at £1833/ Square meter (bloody ell) we only need to spend £77,539,016,100 as a one of cost (plus maintainence) to put the solar panel's in, a worthy investment im sure you will agree. To put it in prespective, the government just shelled out 55,000,000,000 to bail out banks in the UK the money is out there. to be honest, its just me being inqusative (sp?) and its very very late, just a thought of mine for the last 5 mins Oh, i really do always think this way in real life. bed time