ClassNK Renewable Energy

Renewable Energy Image

In order to support the industry's growing needs for renewable energy technologies, ClassNK provides certification and a third-party verification services of diverse renewable energy facilities. ClassNK is contributing towards the creation of low carbon societies both in Japan and abroad through these services.

What's New
June 13, 2022
Registrations of Wind Turbine Certification updated (as of June 13, 2022)
May 9, 2022
Registrations of Type Certification for Small Wind Turbine updated (as of May 9, 2022)
Apr. 20, 2022
Public document updated.
Apr. 7, 2022
Registrations of Wind Farm Certification updated (as of Mar. 31, 2022)
Oct. 18, 2021
Renewable Energy Portal and its related pages completely updated.

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: