in 2009, when ugandan aerospace engineer peter nyeko visited the off-grid village in the district offirst of all, it was near the national park. so, if we could do something in nwoya which would reduce the pressure on firewood, it would be interesting to help conserve the national park. secondly, nwoya had a lot of agriculture which means that whatever we could do with agricultural waste we could do in nwoya. >> so, in 2012, peter nyeko set up a private company. today the plant in got ngur generates 64 kilowatt hours of renewable energy from agricultural biomass through a process called 'gasification'. >> due to the shape of the gasifier, just a spark is enough to get the material to heat up to a thousand degrees celsius. at that temperature it breaks down. from rice husks, maize cobs, ground nut shells, coffee husks into methane and hydrogen rocket fuel. while those gases are light, they rise to the top. they are sucked out and go to power the engine. >> the maize harvest has just ended. after removing the kernels for food, the women used to throw these cobs away. now they supply th