Introduction: This study is still in a beginning status. It is based on the fifty-fifty approach for German schools and is embedded in the research project “Energy efficient city”. Here the schools will be provided with fifty percent of the cost savings in energy sector. The takeover of the energy costs are part of the public finances. Therefore it does not have any consequences for students or teachers if they save or waste the provided energy. This is a reason for many municipalities to support their schools with the Fifty-Fifty approach. The determining and communicated factor of success is the amount of cost savings because of the economic interest of the municipalities. The primarily focus on a purely extrinsically based factor has so far not led to any lasting changes in behavior over the project period. My hypothesis is that additionally or replacing intrinsic factors for success which are also relevant for the affected teachers and students leads to more permanence in behavior. It is already known that people show longlasting behavior only based on intrinsic factors. Therefore I assume that the launching of new factors does motivate teachers and students more to show a long lasting behavior in saving energy. I want to find out which success criteria are important and relevant for students and teachers in German energy saving schools.

First of all a literature review will be done. After that a workshop with the teachers and students to get a first impression of further success criteria is planned. The workshop will be evaluate with qualitative methods and is based on the stance that teachers and students are the experts for their behavior and the involved motivation. Based on the literature review and the workshop a questionnaire will be developed. The questionnaire shall be applied in energy saving schools. I want to apply the questionnaire in the beginning and in the end of the project so I want to show a development in the success criteria with the results. The questionnaire shall be evaluated by quantitative methods.

First results of the project point out that it is worthwhile to focus on other success criteria, besides financial gains. In participating observation of several fifty-fifty events it became apparent that further factors have to be accounted such as profit in competence, autonomy and social integration. I assume further relevant success factors.

I assume that with the opening of the cognitive operating range inaugurate a new scope of action. In addition, I expect a more differentiated success measurement with the questionnaire so that the municipalities are able to determine the success of energy saving projects even in stagnant financial savings.