at household level, a basic model was elaborated considering the main factors impacting the cooking energy expenditure per household, assuming different fuel mixes. The objective of this evaluation was to point out the trade-off threshold that makes feasible the purchase and adoption of the proposed rice husk stove in a given context in compar-ison with the use of traditional solid fuel (wood and charcoal) stoves. Some input data, regarding the availability of rice husk and the costs of materials for the manufacturing of the stove, were collected in the Logone Valley, at the border between Chad and Cameroon, a typical Sub-Saharan setting.