Theme: solar, urban development POLIS – identification and mobilization of solar potentials via local strategies aims at the implementation of strategic urban planning and local policy measures to activate the solar ability of urban structures in European cities. Within POLIS project current developments like diverse new technologies and legislative opportunities have been evaluated and key stakeholders were brought together to improve the planning process and legislation practices towards solar development. POLIS therefore acts on the local level in its attempt to boost solar energy in different European cities (Paris, Lisbon, Munich, Vitoria, Lyon and Malmo). Solar energy has special needs in terms of legislation and municipal agreements. Thereby the project seeks to increase the use of solar energies in European cities, stimulating the cities involved in the project to act as top runners. With this reason Solar Action Plans have been prepared together with the local authorities of the partner cities and methods and instruments for solar urban planning have been identified and implemented in terms of Pilot Actions. The results are disseminated via the web page, workshops and conferences to showcase the diverse approaches.