The Forum for Energy Models and Energy Economic Systems Analysis (FEES) represents an open platform for the close-up experience-based exchange between developers and users of energy models from the fields of research, policy, and industry. One of the major tasks of the Forum is to perform model experiments with various models and model approaches while using a harmonized set of data from joint case studies.

The issue dealt with in the fourth model experiment was the lang-term contribution of the german energy sector to European climate protection. The investigative horizon reached up to the year 2030. Using the case study several measures, technological advancements as well as market conditions (i.e. "independent variables") were examined as regards their potential contributions towards climate protection as well as their impact on various areas of the economy ("dependent variables").