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BidSonar is an independent index of public-sector opportunities. We aggregate data from official sources and are not affiliated with any procurement body. Data is licensed under the Open Government Licence v3.0 and the EU TED reuse notice.

    ContractsHeating, Ventilation, and Air Conditioning Installation and Optimization for Wastewater Treatment Plant
    Closed contract

    Heating, Ventilation, and Air Conditioning Installation and Optimization for Wastewater Treatment Plant

    Tender closed
    29 Sept 2025
    47 weeks ago

    The Bad Kissingen wastewater treatment plant currently relies on a combined heat and power (CHP) system and a heating boiler, both of which can operate on biogas and natural gas. In the future, the CHP will only be used at night when there is no solar power available, and the use of natural gas will

    🇩🇪GermanyPublished 23 Sept 2025· 11 months agoviaTED
    Tender closed
    29 Sept 2025
    47 weeks ago
    Tender deadline passed on 29 Sept 2025.

    Decision brief

    4 fields
    • Contract value
      Not disclosed
      Source did not declare a figure
    • Tender closed
      29 Sept 2025
      10 months ago
    • Sector
      Energy & Utilities
      Browse related listings
    • Location
      🇩🇪Germany

    Lifecycle

    Closed

    Tender closed on 29 Sept 2025. Awaiting award.

    23 Sept 2025Today29 Sept 2025

    Brief

    The Bad Kissingen wastewater treatment plant currently relies on a combined heat and power (CHP) system and a heating boiler, both of which can operate on biogas and natural gas. In the future, the CHP will only be used at night when there is no solar power available, and the use of natural gas will be discontinued. To ensure a reliable heat supply, a heat pump will be installed in combination with a wastewater heat exchanger. The contractor will construct a shaft for the wastewater heat exchanger and prepare the underground piping. The contractor will then install the heat pump and wastewater heat exchanger and connect them to the piping system. Additionally, the contractor will create pumps, fittings, and pressure balancing for the heating circuit between the heat pump and the wastewater heat exchanger. A 4,000-liter buffer storage tank, a fresh water station with a storage tank, and a pressure maintenance and treatment station for the heating water will also be constructed by the contractor. Demolition and piping work in the heating cellar will be carried out by the contractor. The extension of an existing sludge heat exchanger and the insulation of the newly constructed heating pipes will also be required. The commissioning of the entire heating system will be managed by the contractor.

    Track record

    2 awards · 2 winners
    Thin record

    Only 2 prior awards here — too little to read.

    In construction, CITY OF BAD KISSINGEN has awarded 2 contracts to 2 suppliers.

    Who wins here
    1. solarpower project-invest GmbH1× · 50%
    2. SOLARPOWER PROJECTINVEST GMBH1× · 50%

    Across construction, the most active winners are HOLCIM UK LIMITED, LINDUM GROUP LIMITED, TARMAC TRADING LIMITED — the field to beat, or your route in as a partner.

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    Take action
    View on sourceTED

    Original closed notice on the publisher's site

    Publisher
    Publications Office of the European Union
    Licence
    EU 2011/833/EU + TED reuse notice
    Source
    ted.europa.eu
    Record ID
    625018-2025
    CB
    Buyer
    CITY OF BAD KISSINGEN
    Sector
    Energy & Utilities