Moreover it was hard to find a suitable net for the internal structure:market restrictions forced to use a low cost material that is likely to incur in fast deterioration. The final cost of the stove was around 31,000 CFA francs (i.e. 49€): such a high cost is due to the specific materials and works required in this prototype study phase and it is not affordable by local population. In fact several of these issues are likely to be overcome in the scaling up phase of the technology, simply by importing proper materials from a bigger marketplace (e.g. N’Djamena) where these materials are more easily available and at a lower price.