Alternative energy

Today we need to search for alternative methods for obtaining clean and affordable energy. Alternative methods for energy production are getting ever popular, as they are by definition environmental friendly and do not pollute our planet.

As regenerative or renewable energy sources we consider those which are able to restore their energy potential within a certain time window in a natural way. This is contrary to the fossil energy sources such as coal, gas, and oil, or to the uranium nuclear energy source. The non-renweable sources are formed in the course of millions of years in geological processes.