Lebônê

Lebônê's "energy from dirt" solution "...combines efficient lighting technology with a simple energy source readily available to all Africans in the form of microbial fuel cells. These inexpensive fuel cells run on animal and plant waste and naturally occurring soil microbes, and are framed around a flexible substrate (wood, steel, etc) that can vary by geographic availability. This is truly electricity right out of the ground. These fuel cells are used to charge a battery or cheap supercapacitor, which in turn will be used to power a high-efficiency efficient LED or PLED lamp..."