The suitability test identifies areas that are unlikely to be suitable for either a heating or hydrogen network, or that already have a climate-neutral supply. In such cases, further planning is limited to heat savings and decentralized forms of supply.

Results of the suitability assessment for Wiesbaden

No areas were identified for Wiesbaden that would qualify for an abbreviated procedure. Since a reliable assessment is only possible with detailed data from the inventory and potential analysis, a complete municipal heat plan will be carried out for the entire city area.

The inventory analysis forms the basis of municipal heat planning. It shows how Wiesbaden is currently supplied with heat. The inventory analysis is based on building structures, heating systems used, current heat consumption, existing infrastructure, and the energy sources used. The data was collected in collaboration with network operators, specialist departments, and public institutions.

The potential analysis highlights opportunities for sustainable heat supply, for example through energy-efficient renovations, renewable heat sources, the expansion of heating networks, and the use of innovative technologies.

The aim is to identify suitable supply options for each neighborhood and area category in Wiesbaden and to map these in a strategic plan.

The target scenario shows how Wiesbaden's heat supply can be gradually converted to climate-neutral technologies by 2045. Particular attention was paid to keeping heat generation costs as low as possible and ensuring a high level of supply security. The use of different technologies also ensures that the heat supply is robust and can be adapted to new conditions. 

The most important result of municipal heat planning is the designation of prospective heat supply areas. These are areas where long-term expansion of district heating is planned. They are also areas that are better suited to decentralized heat supply. Heat pumps are likely to be used predominantly in these areas. The designation does not mean that the supply option must be used. The results can be viewed in the digital twin.

The draft municipal heating plan was available for public inspection for four weeks in February 2026. During this participation phase, citizens, associations, companies, and other stakeholders were able to submit comments and suggestions.

The feedback from the participation process will be incorporated into the final heating plan, which will be discussed and decided upon politically once the review has been completed.