Legislative Basis

BEK73, §11, stk. 4: 

Companies that have been approved by the Energy Agency's Secretariat for the Danish Wind Turbine Certification Scheme may carry out maintenance and service on stall-controlled wind turbines with an installed capacity of up to 600 kW, cf. sections 10 and 11.

BEK73, Bilag 2, stk. 2:

An approval pursuant to section 11(4) of this Executive Order is granted to service companies that are able to document expertise in maintenance and service of wind turbines, including that they have personnel with documented experience.

The approval may also be granted on the basis of an application forwarded to the Energy Agency's Secretariat for the Danish Wind Turbine Certification Scheme.
The application must, as a minimum, include:

  1. a list of the types of wind turbine for which the company wishes an approval to carry out service
  2. a list of the relevant manuals for maintenance and service of the individual turbine types, and necessary updates, including version no./name of the manual
  3. documentation for previous experience with maintenance and service of the wind turbine types concerned
  4. ist of the training and formal qualifications of personnel
  5. documentation for an implemented quality management system for maintenance and service of the relevant turbine types with a swept area of more than 200 m2.

The Energy Agency's Secretariat for the Danish Wind Turbine Certification Scheme may request supplementary material for use in case processing.

Implementation and Compliance

In order to be certified to service stall regulated turbines up to 600kW, the application must be filled out (is found under Forms as Word and PDF document). Please note that this is in Danish. This is sent to EGV along with relevant appendices. In addition to the above listed documents, the appendices should include:

  • Contingency plan (see also DTU note concerning this under Publications - in Danish)
  • Process for reporting of service to Danish Energy Agency
  • Process for reporting of large damages and damages of safety relevance, cf. BEK73, §10, stk. 4
  • Template for service report distributed to the customer
  • Process/checklist for handling enhanced service on turbines erected longer than the design life span (usually 20 years).

Please give the documents a telling name and remember to outline any changes to previous versions. Furthermore, use version numbers. All the documents should be sent to: 


By email:



by mail:

Energistyrelsens Godkendelsessekretariat for Vindmøller

DTU Vindenergi, Risø campus

Frederiksborgvej 399

4000 Roskilde