Solar energy was able to produce 30 TWhs of electricity last year in Germany. This value is equal to the functioning of about four nuclear reactors. (+)

Hydropower could produce twice the current world production of electricity and it is available continuously, 24 hours / day. (+)

Wind power can already provide energy to power 200,000 homes, according to the largest, built at sea, wind farm in the world, with 100 turbines. (+)