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. | Revision | Document type |
|---|---|---|---|
| Wind Farm Certification Service Procedure | NKRE-SP-0003 Edition: October 2025 |
9 | |
| Guidelines on the Use of Certification Documents and Symbols | NKRE-AP-0001 Edition: October 2025 |
5 | |
| Guideline on Process for Filings of Complaints, Objections and Fraudulent Behaviour | NKRE-AP-0002 Edition: October 2025 |
3 | |
| Application (Initial) | NKRE-080-03 | 0 | PDF Word |
| Application (Change) | NKRE-080-04 | 0 | PDF Word |
| Request for Quotation - Onshore Wins Power Plant & Initial - |
NKRE-080-01 | 0 | PDF Word |
| Registrations of Wind Farm Certification Onshore Wind Power Plant Offshore Wind Power Plant |
NKRE-080-07 | 0 |
|
| Application for Plan Approval Status Service (NK-PASS) 〈Renewable Energy〉 | PASS-APP-E | - | PDF Word |
Guidelines
NKRE-GL-WFC01_September 2024 Wind Farm Certification, Onshore Wind Power Plant Edition, September 2024 version
NKRE-GL-WFC01_Comparison table Comparison table between old and new that clearly shows the changes from the March 2023 version
NKRE-GL-WFC01_March 2023Wind Farm Certification, Onshore Wind Power Plant Edition , March 2023 version
NKRE-GL-WFC01_July 2021 Wind Farm Certification, Onshore Wind Power Plant Edition , July 2021 version（October 2021 error correction edition)
Related Documents
RD2101_R02 ClassNK Wind Turbine Certification and Related Services [May 2024 Website public version]
Address and Contact Details
NIPPON KAIJI KYOKAI
Renewable Energy Department
4-7 Kioi-cho, Chiyoda-ku, Tokyo 102-8567, JapanTel: +81-3-5226-2032 Fax: +81-3-5226-2060 email: re@classnk.or.jp