We provide optimal service with global partnership
and technical capabilities.
We provide optimal services with the latest technology and know-how by cooperation
with overseas companies which have advanced technologies about Wind farm and
Wind turbine.

Message from the President

Support the operation of wind power generation
for a sustainable society
Wind power generation is rapidly getting more attention in Japan, but it already accounts for 19% of total power generation investment in the world. In addition to the problems of environments and self-sufficiency of energy, it is a major factor that wind power generation cost is decreasing to increase wind power. From now on, Japan is about to enter the era of massive introduction of wind power generation.
However, no matter how much equipment you have increased, profits will be lost in an instant if you have stopped for a long time with unexpected problems.
We would like to sweep away such unfortunate wind turbines and help as wind turbine turns vigorously. It is a superb pleasure that only the person engaged in this work can experience is to see the moment when the wind turbine which had stopped due to trouble is reactivate again with his maintenance. We are committed to supporting the smooth operation of wind power generation for a sustainable society, I would like to continue to do technical improvement and development of the industry from now on.
President Yutaka Sudo

Company Profile

Company Name EOS Engineering & Service Co., Ltd.
of Head Office

Kasumigaseki Building 15F,2-5,Kasumigaseki 3-chome,Chiyoda-ku,Tokyo,100-6015,Japan

Tel: +81-(0)3-3519-3911
Fax: +81-(0)3-3519-3912

Business content
  • · Construction operation and maintenance of wind power plants/wind turbines and related facilities
  • · Offshore wind farm/Wind turbine operation and maintenance, CTV and port operation,
  • · Import and sales of maintenance material and PPE (Personal protective equipment) and emergency first-aid equipment for wind turbines
  • · GWO and IRATA training
Customers Japan Wind Development Joint Fund, Japan Wind Development Co., Ltd., Hitachi, Ltd., Torishima Pump Mfg. Co., Ltd., The Japan Steel Works, Ltd., HOKURIKU POWER STATION CO.,LTD, WIND POWER ENGINEERING Co., Ltd., ENEX Electric Power Co., LTD., Chuhgoku Wind Power Co.,Ltd., KYUDENKO CO.,LTD., MEIDENSHA CORPORATION, Daigas Gas and Power Solution Co., Ltd.

(arbitrary order, honorific titles are omitted)

O & M
Wind turbines
GE, Hitachi, MHI, Gamesa, Vestas, Senvion(Repower),Dewind, JSW, Fuhrlander, Micon etc

(arbitrary order, honorific titles are omitted)

Group company Blade Partners Co., Ltd. (Territory:Japan, Asia, Oceania)
Blade Partners Europe A/S (Territory:Europe, Africa, the Americas)
  • · Inspection, evaluation, repair, replacement work etc. of wind power generator blades
  • · Blade improvement ; lightning protection performance, lightning recording device, LE erosion resistance, VG
  • · Inspection of wind power generator tower, nacelle etc, exterior repair etc.
  • · Inspection, evaluation, repair of blades by offshore wind power generator and rope
  • · IRATA training and certification

ISO9001:2015 Quality management system
ISO45001: 2018 Occupational Health and Safety Assessment Series
ISO14001:2021 Environmental management systems

Const. Ind. Lic #2-133614 Electrical
Const. Ind. Lic #29-133614 Scaffolding, Earthwork and Concrete, Scaffolding, Earthwork, Painting, Demolition.
Major qualification
of employee
The Professional Engineer(Electrical & Electronics Engineering)/The Electric Chief Engineer (First Class/ Second Class/ Third Class)/The Energy Management/The Operation and Management Engineer(First Class/ Second Class)/The Electrical Work Engineer (First class/ Second class)/Telecommunications Installation Technician(Analog and Digital)/The Safty and Health Manager/The Hazardous Materials Engineers/The Fire Protection Equipment Engineer/GWO/The Education and training of wind turbine /The Gas Welding/The Crane Engineer/IRTA/Non-Destructive Inspection(UT/MT)
  • Rokkashomura Office
    1-87, Iyasakadaira, Obuchi,Rokkasho-mura, Kamikita-gun,
    Aomori, 039-3212,Japan
    FAX:0175-71-0821 Google Map
  • 24 hour monitoring center
    1-87, Iyasakadaira, Obuchi,Rokkasho-mura,
    Kamikita-gun, Aomori, 039-3212,Japan
    FAX:0175-71-0821 Google Map
  • Choshi Office
    2545-1, Misaki-cho, Choshi-shi, Chiba, 288-0815,Japan
    FAX:0479-25-6355 Google Map
  • Suzu Office
    30-2, ho, Kumantanimachi, Suzu-shi, Ishikawa,927-1212,Japan
    FAX:0768-84-5117 Google Map
  • Atsumi Office
    Shi-shain Suzu, 31-1, Otsubo, Kanbe-cho, Tahara-shi,
    Aichi, 441-3415,Japan
    FAX:0531-23-1370 Google Map
  • Daisen Office
    138-1, Komido, Daisen-cho, Saihaku-gun, Tottori, 689-3222,Japan
    FAX:0859-54-4861 Google Map
  • Hizen Office
    743-1, Irinokou, Hizen-cho, Karatsu-shi, Saga, 847-1526,Japan
    FAX:0955-54-0447 Google Map
  • Akita Office
    343, Negi, Funakoshi, Oga-shi, Akita,010-0341,Japan
    FAX:0185-35-5072 Google Map

Office map

Please contact any of our office for inquiry


Training center

We have a wind turbine training center in Rokkasho village, Aomori Prefecture, and blade training facilities in Suzu city, Ishikawa prefecture.
We work on training by using nacelle placed indoor to train technicians and perform research and development. We cover from the base of electrical and mechanical engineering of wind turbine and blade engineering and maintenance.


September 2001 Eos Service Co., Ltd. established in Shimbashi, Minato-ku, Tokyo.
September 2003 "Rokkasho-mura Office" opened in Rokkasho-mura, Aomori prefecture.
September 2004 "Choshi Office" opened in Choshi-shi, Chiba Prefecture
March 2005 "Hizen Office" opened in Karatsu-shi, Saga Prefecture
August 2005 "Suzu Office" opened in Suzu-shi, Ishikawa Prefecture
November 2005 "Daisen Office" opened in Daisen-cho, Tottori Prefecture
September 2006 "Atsumi Office" opened in Tahara-shi, Aichi Prefecture
October 2009 Company name changed to "Eos Engineering & Service Co., Ltd."
August 2010 Training center established in Rokkasho-mura, Aomori prefecture
February 2013 Acquired ISO 9001 OHSAS 18001
November 2014 Headquarters moved to Nishi Shimbashi in Minato-ku, Tokyo
July 2015 Akita prefecture Yuri Honjo-cho opened "Akita Office" (* moved to Oga-shi, Akita Prefecture in November 2017)
April 2017 Establishment of JV in Japan, Blade Partners Co., Ltd.
July 2018 EES became a GWO certified training provider.
April 2019 Headquarters moved to Uchisaiwaicho in Chiyoda-ku, Tokyo.
December 2019 ISO 9001:45001 certified.
February 2020 BP is certified our facility of IRATA.
February 2020 BP is certified our facility of IRATA.
March 2022 Headquarters moved to Kasumigaseki (current location) in Chiyoda-ku, Tokyo.

Access map

Access map
  • ■Tokyo Metro:Ginza line
    2min. walk from Toranomon station
  • ■Tokyo Metro: Namboku line
    6min. walk from TameikeSanno station
  • ■Tokyo Metro:Marunouchi line, Hibiya line, Chiyoda line
    8min. walk from Kasumigaseki station
  • ■Tokyo Metro:Yurakucho line
    9min. walk from Sakuradamon station
  • ■Toei Subway:Mita line
    10min. walk from Uchisaiwaicho station
For quotations and inquiries,
call or send email
EOS Engineering & Service Co., Ltd.
Kasumigaseki Building 15F,2-5,Kasumigaseki 3-chome,Chiyoda-ku,Tokyo,100-6015,Japan

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