Scene setter In Europe, architectural and planning rules for protected historic buildings lead to major technical constrains in integrating renewable energy such as photovoltaic. These problems call for innovative and creative solutions for building integrated photovoltaics that must combine technology with the artistic and cultural heritage of a city/district. This inducement prize will reward a European protected historic urban district that has perfectly integrated in its buildings a photovoltaic system to generate and supply electricity for its own consumption. In this context the photovoltaic system should include all the necessary components to supply power within a district. The prize will induce the integration of new photovoltaic systems in protected historic urban districts.