Wind Farm Certification

Wind Farm Certification is covered as part of the project certification process and is carried out to ensure conformity with the safety regulations of the Electricity Business Act for ”Construction Plan Notification”. ClassNK evaluates the environmental conditions of the proposed installation site and assesses whether the strength and safety of the wind turbines and their support structures are suitable for the installation environment based on Japan-specific requirements.

Unauthorized use prohibited

ClassNK publishes the following documents for wind farm certification.

Documentation Document No. Document type
Wind Farm Certification Procedures RE-SP-0003
Edition February 2021
Guidelines on the Use of Certification Documents and Symbols RE-4 PDF
Guidelines on Filings of Complaints and Objections RE-5 PDF
Application for Wind Farm Certification (Initial) RE-081-03 PDF Word
Application for Wind Farm Certification (Change) RE-081-04 PDF Word
Registrations of Wind Farm Certification
  Onshore Wind Power Plant
  Offshore Wind Power Plant

Address and Contact Details

Renewables and Environment Department
4-7 Kioi-cho, Chiyoda-ku, Tokyo 102-8567, Japan
Tel: +81-3-5226-2032 Fax: +81-3-5226-2060 email: