•Programme to integrate spatial planning and energy planning.•Creating strategic database for energy transition in spatial planning.•Applying strategic maps to harmonize district heating, mobility and spatial development.•Applying energy transition thinking for sustainable spatial planning.•Holistic implementation programme for scientific knowledge in local spatial planning. How we plan our towns, cities and regions is inseparably connected to energy demand, greenhouse gas emissions and the way how we can manage the transition to sustainable renewable energy systems. Therefore, we propose that integrated spatial and energy planning is an important part of energy transition and climate protection strategies. In this article, we discuss how the energy transition and spatial planning can be holistically integrated, and how this theoretical framework combining the factual findings of integrated spatial and energy planning and strategic concepts of spatial planning can be put into practice in municipal spatial planning. We demonstrate the applicability of the approach in an action research process in the Austrian Province of Styria involving the Government representatives, municipalities and spatial planners. The whole approach includes, as tangible outputs a strategic database, strategic maps, and a planning guidance for municipalities on the one hand, and a further education programme for planners and municipal decision makers on the other hand. Finally, the applicability, transferability and limitations of the approach are discussed. As the approach is not only established in Styria, but at the moment also put forward in two further Provinces so that we can, in total, cover about 63% of all Austrian municipalities with this approach, we also propose that this approach can serve as a role model not only for local and regional energy transition and climate protection policies around the world, but also for shaping third mission activities of universities.