Biofuels can be used as an alternative energy source. These are cost effective as well as environment friendly. Biofuels are generally derived from the ethanol. In future the energy sources to be derived from ethanol will increase. The demand of diesel and gas will also reduce in future. Globally, Brazil is the number producer of biofuels followed by United States.

Although it is not obvious to many, but President Barack Obama’s push for wind and solar energy to wean the U.S. from foreign oil carries a hidden cost, which is overburdening the nation’s electrical grid and increasing the threat of blackouts.

It is revealed that a Chicago-based electric utility focuses in building the largest solar power plant of US, stated by Chicago-based Exelon Corporation on Monday.

This article describes about the preparations and implications of the Earth Hour 2009.