Reaching the carbon neutrality goals set by the Kanta-Häme region, its municipalities and cities, and many companies requires several different actions and technologies, and especially a major systemic change. Climate change and the actions related to its mitigation are the main theme of Kanta-Häme's Smart Specialization strategy, and the efficiency of energy systems is at the center of this. Decentralized energy systems, such as energy positive districts, have several benefits as part of energy systems, and at the EU level, for example, they have been raised as a central part of the development of a sustainable energy system. In positive energy districts (PED), more renewable emission-free energy is produced annually than is consumed. They are energy-efficient and energy-flexible areas and they require the integration of different energy systems (electrical energy, thermal energy, cooling energy, energy storage) and interaction between buildings, users and regional energy, transport and ICT systems. PEDs can be of many kinds and consist of many different actors. PEDs have been developed and studied to some extent in Finland and at the European level. It is already possible to implement PEDs with current energy technologies. Above all, the challenge and obstacle to development has been seen to be the fact that different actors have different strategic goals. In addition, the lack of regulatory frameworks has been seen as a challenge. The generalization and expanding of PEDs requires a very profound systemic change for the current actors and profound cooperation. The goal of the project is to promote the energy efficiency of the Kanta-Häme area and the security of energy availability by developing positive energy districts (PED). The project produces information about existing PEDs, identifies which actors and new innovations are still needed to develop the areas, produces a data management plan, and develops PED optimization strategies based on several sustainability criteria. In addition, the project explores the effective cooperation models of the PEDs between the actors of different target groups, utilizing the framework and operating method of systemic design. Finally, the project will make strategic proposals and plans for positive energy districts in the Kanta-Häme region. What makes the project special and innovative is its implementation method. The project is carried out using the process of systemic design, which focuses on the development of a system formed by wide-ranging, multi-actor and complex problems. With the help of systemic design, positive energy districts and their development are looked at holistically and actors are involved in the common dialogue around it and their mutual interaction is strengthened. The PEDs are built iteratively by understanding the needs of operators, sketching and testing early stage concepts with operators and further developing the concepts up to the actions required to carry out the change. In addition to the working process, the project brings new value to the projects and research of PEDs by taking into account various types of energy, taking into account system integration. In the project, energy-positive areas are developed with the energy customer first and not, as has become the tradition, to develop the sector by energy companies and their strategic goals first. In the long term, the project's activities will build networks and strengthen them around the subject's themes, within which the development of the energy efficiency theme can continue and expertise can be strengthened. In addition, with the project, research and development work related to energy will increase and become established. In the long term, this competence contributes to the promotion of the carbon neutrality goals of companies and cities, as strong research competence is transferred to education and also through that to companies.