This step is aimed through a decision scheme at answering the following question : which solar cooling technology is the most adapted to the project? The decision scheme is based on the method developed in the framework of IEA Task 25 by Fraunhofer ISE [2]. Basically, the use is selecting a path through several technical questions to identify the best technology among solar thermal driven sorption systems (absorption, adsorption, desiccant cooling) with or without a back up system. The adaptation of this method to a user friendly web interface is one of the challenge remaining to do. This step would be made of the following parts :

• general presentation of the scheme : what? how?

• questionnaire to fill in with consequences on the tree creation

• results of the path and final tree

• advice on which technology for a solar cooling project