lebônê solutions was one of the 16 winners in the 2008 lighting africa development marketplace grant competition. they developed mfcs that make use of the energy given off by soil microbes. it is amongst the technologies that hold promise for bringing power to developing states, where electricity is often scarce.
essentially all you do is dig a hole, layer an anode, some soil, sand and a cathode — and connect the anode and cathode to a circuit board to charge a battery that can power an led light, run a radio or charge a mobile phone.
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