Planning the Transformation of the District Heating Supply Tender

• Country: Germany
• Summary: Planning the Transformation of the District Heating Supply in Weimar Based on the Hoai Lp2 - Lp4
• DET Ref No: 138044277
• Deadline: 16 Apr 2026
• Financier: Self Financed
• Purchaser Ownership: Government
• Tender Value: EUR 1600000.00
• Notice Type: Tender
• Document Ref. No.: 188913-2026
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• Description:
• As part of an existing transformation plan, the time, technical and economic requirements for converting the existing fossil fuel district heating supply of Stadtwerke Weimar GmbH into one that meets the legal requirements were met Heat supply developed through renewable energies. The processing was carried out in accordance with the guidelines of the federal funding for efficient heating networks (BEW). The transformation plan essentially includes determining the basis for the transformation of the District heating generation and is therefore based on the performance phase (LP) 1 of the HOAI. The client also has a concept study that evaluates and summarizes the approaches pursued for the new heat generation and storage. Hereafter this includes The following large components, which were subject to a rough design: oSewage water extraction structure, approx. 500m3 oHeat pump system sewage water/district heating, air/district heating approx. 2x approx. 17MW oGround heat storage approx. 38 thousand m3, + approx. 158 thousand m3 oSolar thermal system, approx. 10,000m2 oElectric storage 15MW In addition to the named components of the concept study, the infrastructure that also needs to be planned is listed with the following key data: oHeat routes - approx. 8.8 km oTechnical building approx. 2000m2 of usable space oEMSR completely The transformation of district heating should take place in 2 stages (expansion stage 1 by 2030, expansion stage 2 by 2035). This is necessary in order to achieve the legally stipulated share of renewable energy within the stipulated...
• Documents:

 Tender Notice