Keywords: Available Energy-3.png Useful energy exergy in surface incident solar radiation wind and geothermalhttp //gcep stanford edu/research/exergycharts html compared to global consumption - Energy Information Administration in 2004 447 605 Quadrillion btu/yr 14 965 x 10 12 Watts http //www eia doe gov/pub/international/iealf/table18 xls self-made based on the work of Frank van Mierlo but unknown whether false 2008-05-21 Delphi234 Available_Energy-2 jpg economy Solar energy statistics Wind energy statistics Geothermal energy statistics Climate change |