generate electricity an environment friendly manner

A team of student researchers at MIT have developed a device they hope will generate enough electricity to recharge a mobile phone - cell phone in developing nations, where electricity is scarce. The device is based on the concept of biomass to generate electricity. The BioVolt as to ensure its creators only cost $ 2, also say several units could be connected to increase power output and increase efficiency. The invention was the winner of $ 5,000 to win the first prize.