Work package 1 lays the ground for the entire project by identifying the major characteristics of the involved models and existing scenarios. This starts by defining criteria that represent the dynamics of changing energy markets and respective social consequences. These are used to sketch a scenario space which represents potential future paths of the social, political, and economic developments. The scenario space narrows the initial criteria down by priority setting. This will be followed by an in-depth analysis of involved models which aims at identifying specific and relative strengths and weaknesses. In a second step the above-defined criteria will be used to search for critical model components that will be addressed in the model development in WP2. In analogy, WP1 is going to identify the major scenario components that are critical to the development of consistent scenarios in WP3. The work package will be wrapped-up by applying the same criteria to existing data bases as well. The respective results will feed into WP 4.