Every energy cooperation project has a common start: to identify local opportunities by examining the energy supply and demand, the stakeholders, and the existing infrastructure of the region. Often a lot of knowledge is available, but it is spread among different stakeholders. For example, companies do not know the needs and potentials of their neighbors. The self-assessment tool facilitates the process of collecting the different information sources and bringing them together in one simple overview. With the tool, users make an inventory of data in four categories that are important when exploring opportunities for energy exchange: energy supply (heating, cooling, electricity), energy demand (heating, cooling, electricity), stakeholders and existing infrastructure. By answering several questions, users can also self-assess the information completeness and quality of the inventory and identify the next steps for the region.