claudine nyirabureteri: with my new stove, my y health has improved.don't water any more when i cook. my cough is gone, and i no longer get dizzy. reporter: claudine got her new stove from an austrian firm called likano. soon, the company wants to equip even more communities around the national park with these cookers. the plan is to supply 50,000 households altogether. clarisse: we distribute the stoves. and the stoves are contributing to the reduction of carbon. so we are selling those credits in order t to have other mone, other funds, for again buying the stoves from the factory. reporter: the cookers are produced in the capital kigali, in a large factory about 10 kilometers from the city center. one of the key elements in the stove is made from a local waste product. this is coffee husk residue which can be purchased cheaply from local farmers. coffee is a key export product in rwanda. the husks are mixed with locally sourced clay to form an insulating material. that is then used to create clay cylinders like these which are placed inside the stov