Renewable energy
Solar energy
The solar energy that reaches Earth is one 2.2 billionth of the energy discharged from the sun. Every living thing - human, animal, or plant - owes its life to that energy. As a matter of fact each solar cell can reproduce itself. Solar cells generate energy, but paradoxically once they are made, they keep generating energy throughout their service life, without consuming any further fossil fuels. Thus, the energy generated by one solar cell can be used to reproduce another one and so on. This is what is well known by "solar cell self-replication."
Wind enegry
European countries are world leaders in clean electricity generation. In Denmark for example wind accounts up to 20% of all installed electro capacity. Wind usually is strong at night - a time when most cars are parked and their batteries might be charged utilizing wind energy that can drive electric vehicles without any emissions.
Already available in Switzerland, UK, Japan and in the USA mass-produced electric vehicles achieve desirable zero emissions while at the same time offer driving performances similar to a gasoline engine. Toyota Motor Corp., Daimler (Smart), Nissan Motor Co., Fuji Heavy Industries Ltd. (Subaru) and Tesla Motors are technology leaders for electric cars, while Panasonic, Sanyo Electric Co. and NEC of Japan have strong market share for the lithium-ion batteries that power those vehicles.