This project aims to achieve a cogenerator integrated in a boiler generator. The market for electric boilers is expanding and French industrialists are currently absent in this area. The 3 partners in this application are complementary. They are specialists in all areas necessary for the development of the object being studied. The partnership, by the industrial Gaz de France, has extensive experience and a vision on the product and the market for micro cogenerator while integrating the constraints related to the development of this specific type of product. Preliminary studies had validating the principles and our models by the realization of disjointed thermal and electrical prototypes. Studies under way will continue to lift some technical and technological locks. This ANR request should help to define the best architecture or technical solution to realize the product. After the design of the prototype and the material definition, the realization of the prototype will permit to test it on a specific bench. The results will validate and correct if necessary our models. These results will be very important, of course, about the decision to industrialize power generator boiler incorporating the principle developed in this study