The Ökozentrum Langenbuck is developing renewable energy based fruit drying technologies suitable for the climatic, social and economic conditions of small agricultural cooperatives in Eritrea and Burkina Faso. The drying methods will ensure high quality products as well as sufficient production capacity. This will allow the participation of small agricultural cooperatives in the international market of organic dried fruits. Once successful field tests have been carried out, training programs will follow up, which will rise awareness on the new technology and transfer know-how on sustainable drying technology.