the hard part is taxing the sun's energy itself. and yes it's hard to harness it effectively but that should be on our list of priorities instead of relying on fossil fuels.
this should speak for itself
Energy 362,692,553 Energy used today (MWh), of which: info 293,779,371 - from non-renewable sources (MWh) info 68,913,182 - from renewable sources (MWh) info 2,707,965,532,026 Solar energy striking Earth today (MWh) info 77,617,165 Oil pumped today (barrels) info 1,259,581,021,552 Oil left (barrels) info 14,995 Days to the end of oil info 1,148,003,934,919 Gas left (boe) info 60,421 Days to the end of gas 4,396,151,464,240 Coal left (boe) 151,591 Days to the end of coal
edit on 13-11-2012 by UziLiberman because: (no reason given)