Table 1: Renewable exergy (energy) resources on the Planet Earth with present conversion technologies in electricity [11-13].
* TPES – Total Primary Energy (exergy) Supply.
Resource in TWex = TWh/8760 h/y TWex Ideal TWex Technical possible TWex Present delivery as electricity
Solar irradiation 11500 580 ÷ 1640 0.00176
Wind 1700 40 ÷ 170 0.02
Water flows 1.9 1.6 ÷1.9 0.32
Waves 2,7 0.5 ÷ 2.7 0.000002
Geothermalshallow 45 0.07 ÷ 0.2 0.0065
Geothermal - deep 55 0.035 ÷ 2 0.0065
Tidal 3.7 0.02 ÷ 0.8 0.00006
Biomass (dry) 33.4 5.8 ÷11.7 0.039
Total 13,341-7 628.03÷1829.3 0.387322
Present world TPES* (2013) 17.79 2.5877