Regular annual maintenance of WWD wind turbines (2026)

Summary

The tender concerns the regular annual maintenance of WWD wind turbines in 2026. The bidder must confirm compliance with all tender documents and submit a non-conditional bid. For the main works, the bidder must have at least two technicians with GWO certificates covering working at height (including rescue from turbine), fire awareness, first aid and manual handling. At least one responsible technician must have carried out annual maintenance on at least three WWD3 turbines within the last three years. Copies of the technicians’ certificates and a description of the responsible technician’s previous experience, including the company and contact person details, must be submitted. For electrical and high-voltage works, the bidder must have at least two electricians with the same GWO certification. At least one electrician must have performed electrical work related to high-voltage equipment in at least three WWD3 turbines within the last year. In addition, there must be a person responsible for electrical work with a valid A-competence certificate or at least a level 7 certified electrical engineer qualification with the relevant competence, or equivalent competence. The bidder must submit copies of the electricians’ certificates, a description of previous experience, and the responsible person’s details and proof of competence. For mandatory inspections, the bidder must have at least two workers with GWO certificates. The work must be carried out by workers certified for Zarges TBA 6000-3, Greifzug Tirak X502P, Greifzug Bloxstop BSO1004E and Demac DC-WIND 10-500 1/1 H105 V12/3. The fire extinguisher inspector must have completed training in line with EVS 933. Copies of workers’ certificates and training information must be provided. The machine-readable notice did not include precise qualification or compliance requirements; these must be checked in the tender documents.