Conversion of the Wolfsburg-Stahlberg wastewater treatment plant main building and construction of a new operating building – aluminium elements, windows and doors

Summary

The tender concerns the conversion of the main building and construction of a new operating building at the Wolfsburg-Stahlberg wastewater treatment plant. The contract covers the manufacture, supply and installation of aluminium building elements, windows and doors, including glazing and sealing works. The works are expected to take place from January to the end of May 2027 while the plant remains operational, so the contractor must manage access, safety, logistics and protection of existing structures. Price is the only award criterion. The tender deadline is 6 October 2026. The bidder must demonstrate comparable turnover and experience, provide three references if shortlisted, have the necessary workforce and relevant registration, and submit the required offer, pricing and subcontractor documents. The work must comply with the specified technical standards and material requirements, including evidence of product performance and aluminium recycling processes where requested. At least one German-speaking site manager must be appointed.