Jena starts green turn: Flow thermal dermatia ensures clean warmth!

Jena starts green turn: Flow thermal dermatia ensures clean warmth!

Jena, Deutschland - Jena plans to build a new flow thermal power plant in order to put the district heating supply on sustainable legs. The power plant will gain energy from the Saale and should also supply half of the district heating customers in Jena. In addition to the flow thermal energy, other heat sources are being planned, including combined heat and power with hydrogen and biogas, electric boilers, geo and solar thermal energy. The city wants to reduce the dependence on fossil fuels, since 98 percent of district heating from natural gas is currently being produced. According to the Thuringian Climate Protection Act, district heating must come from renewable energies completely by 2040 at the latest.

The plan for switching to green district heating is part of a comprehensive transformation plan that is to be completed in 2024. The plan will include approaches to generate district heating from renewable sources, network expansion, network compression and technical adjustments. Findings from municipal heat planning flow into this process, which is promoted by the federal program efficient heating networks. In addition, the city will expand its supply areas and almost double the line network for district heating in order to supply about 70 percent of households with steam in the future.

Expansion of the heat network and new technologies

The Stadtwerke Jena Netze has already provided extensive data on municipal heat planning. Around 62 supply areas are currently identified in Jena, which include two types of care: the (remote) heat network and individual house solutions. The planned extensions include the creation of neighborhood solutions, such as in the Friedensbergterrassen residential area, where two combined heat and power plants are installed. In the future, these could be replaced by large heat pumps that are to be built at suitable locations in the south of the city near the district heating main network.

For the large heat pumps, a location search is underway, which takes place in coordination with the environmental authorities. The removal building on the river bank is planned, with the Saale water removed, but not consumed or treated chemically. The heat pumps use a principle of heat transmission that works similarly to refrigerators: the hall water releases heat to a refrigerant that is then compressed and used for heat generation.

financing and legal framework conditions

The implementation of the heat planning is regulated by the "Thuringian Ordinance on the Financial Compensation for the Costs for the Position of Heat Plans". This regulation ensures that the costs for municipal heat planning are compensated for. From October 2024, Thuringia municipalities are available annually to finance personnel, external reports and participation processes. For the year 2024, a total of seven million euros are planned, which are to increase from 2025 annually to over ten million euros.

Overall, the state government estimates the total costs for municipal heat planning in Thuringia until 2028 at around 50 million euros. These funds are to be used, among other things, for inventory analyzes, potential analyzes and public participation processes. The municipal heat planning thus represents a strategic planning instrument that should contribute to the heat transition and to decarbonization of the building sector.

For further information on heat planning in Jena, readers can consult the article by mdr href = "https://www.stadtwerke-jena.de/energie/privatkunden/news/detail/gruenerergiemix-fuer-die-fernwaer ME-in-jena-flusshermie der-Saale-play-role-roll ~ 59EE0590-8FC4-4B26-BD70-251129F87A5A "> Stadtwerke Jena provides further details about the new energy sources and their integration into the heating network. There is also comprehensive information on the website of Thuringia Environment , which explain the legal framework and financial aspects of municipal heat planning.