Energy production in southern Sweden is insufficient to meet the demand. As a result, Skåne relies on electricity imports from other parts of the country and abroad. Region Skåne sees potential in increasing energy production through renewable resources, including wind power. Many land-based wind turbines in Skåne are outdated and need upgrades in the near future. Wind turbines hold significant potential for future electricity production, necessitating further expansion to meet the growing demand for electricity. Wind power planning transcends municipal boundaries, requiring intermunicipal collaboration for effective wind power expansion. In 2010, three neighboring municipalities - Helsingborg, Höganäs, and Ängelholm - developed a thematic addition to identify suitable land for wind power expansion. This study aims to investigate the importance of municipal collaboration in wind power expansion and the challenges and opportunities municipal planning presents for renewable energy production. The methodology includes interview studies and document analysis to capture the broad aspects of collaboration and wind power development. The theoretical framework applies governance at various types and levels. The results highlight the significance of effective dialogue between municipalities for planning sustainable energy sources. Despite some debate over the thematic addition, the study underscores the need for cross-municipal cooperation to optimize planning. Municipal collaboration can address challenges in planning renewable energy production, but it requires political support and balancing diverse interests. Intermunicipal cooperation is crucial for tackling the challenges of renewable energy sources and for sharing resources and expertise among municipalities.