Japan s Floating Offshore Wind Projects: An Overview

Transcription

1 Japan s Floating Offshore Wind Projects: An Overview May 2013 Annette Bossler Main(e) International Consulting LLC Bremen, Maine (USA) A Member Company of

2 Presentation Outline: Offshore Wind Resources in Japan Past Floating Offshore Research Projects Operating Projects: Hakata Bay Scale Pilot ( Wind Lens ) Kabashima Island Project (Floating Spar) Planned Projects: Fukushima Project (1 x Spar, 2 x Semisubmersible) MODEC Skwid Floating Wind & Ocean Current Turbine Outlook 2

3 Eastern Japan Fukuoka Western Japan Iwaki Nagasaki Tokyo Source: 3

4 Offshore wind situation in Japan: 80% of wind resources are in deep water (50 meter+) Theoretical wind energy generation capacity of 1.6 TW 4

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6 Current Status of Offshore Wind in Japan Operating Near Shore Wind Power: Hokkaido: (2 x 600kW turbines) at a Japan Self Defense Forces facility Yamagata: (5 x 2MW turbines), operated by Summit Wind Power Ibaraki: (7 x 2MW turbines); to be increased to 15 turbines. 300km from 2011 earthquake epicenter back in operation 2 weeks after earthquake Operating Offshore Wind Power: Gravity foundation with 1 x 2.4 MW turbine in Tokyo Bay Gravity Foundation with 1 x 2.4 MW turbine in Fukuoka Bay Operating Floating Scale Pilots: Hakata Bay Wind Lens (2 x 3kW turbines in single floater) Kabashima Island Spar (1 x 100kW turbine) Other announced projects: Hitachi/Toshiba (floating offshore) Windpower Ibaraki/ Marubeni 50MW by km off the Ibaraki coast Planned Full Scale Floating Pilots: Kabashima Island Spar (1 x 2MW turbine) Fukushima Consortium (1 x 2MW and 2 x 7MW turbines) 6

7 Floating Foundation Types: Source: Spar Buoy (ballast stabilized) Semi Submersible (stabilized by active ballast systems and buoyancy) TLP: Most stable Less suitable for challenging ground conditions as well as strong tidal currents and storm surges Reliant on anchor systems Spar Boy: Inherently stable; lowest operational risk Requires at least meters water depth Installation more challenging; assembly requires sheltered deep water site Semi Submersible: Most flexible design Less stable than TLP and Spar Reliance on active ballasting systems Tension Leg Platform TLP (mooring line and buoyancy stabilized) Different solutions for different site conditions! 7

8 Prior Floating Offshore Research Projects in Japan: There were at one point 10 different floating offshore projects in Japan The key projects were: Sasebo HI, Toda Construction, Japan Hume, Kyoto University Project 佐世保重工業, 戸田建設 日本ヒューム, 京都大学 Mitsubishi HI 三菱重工業 Shimizu Corporation 清水建設 Mitsui Zosen 三井造船 IHI Corporation (IHI Marine United) アイ エイチ アイマリンユナイテッド Hitachi Zosen 日立造船 National Maritime Research Institute of Japan 海上技術安全研究所 Kyushu University 九州大学 Hitachi Zosen project canceled in 2009 / 2010 due to company restructuring. In December 2011 announcement to restart. In September 2012 formation of consortium with Toshiba Corporation, Sumitomo Electric et. al. In November 2012 technical co operation agreement with Statoil of Norway. Most projects have been funded by Japan s New Energy and Industrial Technology Development Organization NEDO ( 独立行政法人新エネルギー 産業技術総合開発機構 ) Hitachi Mitsubishi Mitsui Sasebo et. al. Shimizu NMRI 8

9 Hakata Bay Scale Pilot ( Wind Lens ) Project by Kyushu University Division of Renewable Energy Dynamics Initial development of wind turbine with the project name wind lens. Launched December 4th, 2011 for 1 year test with scale model of an 18 meter diameter floating platform with two 3kW turbines 600 meters from shore in Hakata Bay (Fukuoka) Pilot also includes solar panels. Stage 2 will be testing of a 60 meters diameter platform with TLP mooring 2km off the coast. Image Source: Asahi Shimbun, Dec. 5 th,

10 5t concrete anchors, 2 each at 6 locations 10

11 Image Source: Kyushu University Division of Renewable Energy Dynamics 11

12 Kabashima Island Project (Floating Spar) Supported by Ministry of Environment Consortium of Toda Construction, Fuji Heavy Industries, Kyoto University and National Maritime Research Institute of Japan Scale pilot with 100kW downwind turbine launched in June 2012 Turbine manufactured by Hitachi and Japan Steel Works Total length of 71 meter Hub height 22 meter above water level Bottom of spar uses super hybrid concrete, developed by Kyoto University and Toda Construction Full scale pilot planned for 2013 at water depth of meters with 2MW turbine Extensive environmental monitoring 12

13 Image Source: Kyoto University / Toda Construction 13

14 Image Source: Kyoto University / Toda Construction 14

15 Full Scale Fukushima Floating Demonstration Project Project management by Marubeni Funding: Japanese Government Yen 12.5 Billion (US$ 123 Million). Estimated total cost Yen 18.8 Billion (US$ US$ 189 Million) 2 x 7MW turbines and 1 x 2MW turbine Interconnect at Iwaki; power to be purchased by TEPCO First hydraulic offshore turbine to be used with floating foundations (Mitsubishi 7MW) Water depth meter Average wind speed 7 m/s at hub height 20km offshore Fukushima Prefecture coast Foundation Type Spec Turbine Type Technology Provide Phase Advanced Spar 25 MVA, 66kV Substation Japan Marine United (Foundation); Hitachi (Substation) Semisubmersible 2MW Downwind Turbine Mitsui (Foundation), Hitachi (Turbine) I I Semisubmersible 7MW Upwind Turbine, hydraulic Advanced Spar 7MW Upwind Turbine, hydraulic Mitsubishi (Foundation & Turbine) Japan Marine United (Foundation), Mitsubishi (Turbine) 2 2 Source: Fukushima Consortium Press Release 15

16 Full Scale Fukushima Floating Demonstration Project Source: Nippon.com 16

17 Full Scale Pilot Project in advanced Planning: Fukushima Floating Pilot Project Site Conditions: Water depth m Annual average wind speed: 7m / s at hub height Maximum significant wave height: 7 14m Distance offshore: More than 20km Assignments per consortium member: Marubeni Corporation (Project Team Leader): Business research, licensing, environment, fisheries Tokyo University (Technical Advisor): Observation of floating body dynamics, development of simulation technology Mitsubishi Corporation: Business research, licensing, environment, fisheries, such as O & M Mitsubishi Heavy Industries, Ltd.: Floating offshore wind power generation facility Japan Marine United: Floating offshore wind power generation facility and for floating sub station Mitsui Engineering & Shipbuilding Co., Ltd.: Floating offshore wind power generation facility Nippon Steel Corporation: Steel Supply Hitachi, Ltd.: Offshore substation Furukawa Electric Co., Ltd.: Subsea cable Shimizu Corporation: Construction technology Mizuho Information & Research Institute, Inc.: Project Management and Administration 17

18 Full Scale Fukushima Floating Demonstration Project Source: Tokyo University / Fukushima Consortium 18

19 Full Scale Fukushima Floating Demonstration Project Est. Cable Length 23 km 19

20 Full Scale Fukushima Floating Demonstration Project Subsea cable installation started in April

21 Japan Marine United (formerly IHI) Advanced Spar Floating spar with reduced vacillation finn to reduce sway Minimum draft 50 meter Core design will be used for floating substation and foundation for 7MW turbine 21

22 Japan Marine United (formerly IHI) Advanced Spar Tower height 88.8 m Hub height 105 meter Rotor diameter 167 m Spar length 60 m Connection tower and foundation height 12 m 22

23 Mitsui Semisubmersible Source: Fukushima Consortium 23 Model shown at Tokyo Smart Energy Week, Feb (Photo: MIC)

24 Mitsui Semisubmersible Mitsui has developed 2 floating foundations: a TLP and a Semisubmersible The Semisubmersible will be built as part of the Fukushima project Design for use with a 2MW turbine Width 58 m Total columnlength32 m of which 16 mwill be submerged Hub height 60 m Blade length ca. 40 m Rotor diameter ca. 80 m Cut out wind speed 25 m/s Cut in wind speed 13 m/s RPM

25 Mitsubishi Semisubmersible Semisub to be deployed with Mitsubishi s new 7MW hydraulic offshore turbine Hub height 105 m Rotor diameter 167 m Cut in wind speed 15 m/s Cut out wind speed 21 m/s RPM 10.3 Source: Mitsubishi 25

26 Mitsubishi Semisubmersible Tower height ca. 105 m Displacement ca. 26,000 t Column diameter 14 m Source: Mitsubishi 26

27 Mitsubishi Semisubmersible Assembly Source: 経済産業省資源エネルギー庁 27

28 MODEC Skwid Floating Wind & Ocean Current Turbine (Savonius Keel & Wind Turbine Darrieus) MODEC is a subsidiary of Mitsui Zosen Model was presented at Tokyo Smart Energy Week Exhibition in February 2013 Scale model pilot plant under construction; test planned for fall 2013 Project supported by NEDO Omnidirectional Darrieus vertical turbine Savonius ocean current turbine Floating structure suitable for shallow water To be utilized powering islands in remote locations Estimated output capacity of 500kW in winds of 13 m/s Max output 1MW at 16m/s wind speed Source: 28

29 Outlook For many years, Japan s floating offshore foundation research was unkown in Europe and North America as publications were only available in Japanese. Japanese government and industry have always been aware of the overseas market potential for floating offshore wind, especially in the US. Japanese industry had limited interest in the technology for the domestic Japanese market because of lack of government support and opposition by the powerful Japanese fishing industry. The Great Eastern Japan Earthquake, Tsunami and Fukushima nuclear accident have changed the direction. The conservative government continues to support the development of renewable energy, including floating offshore wind. This is also highlighted in the latest 5 year Japan Ocean Policy Plan, issued in April With ist strong naval architecture and marine construction resources Japan is likely to become one of the leaders in floating offshore wind. Japan has strong representation in the IEA sub working group on standards for floating offshore wind. Japan is developing navigational safety standards for floating offshore wind. 29

30 Thank you for your attention. ご清聴ありがとうございました 30

31 Prepared by: Main(e) International Consulting LLC 32 Blueberry Lane, Bremen ME 04551, USA intl consulting.com Phone intl consulting.com Disclaimer: Information presented in this report may not be further distributed or copied without permission from MIC and original sources. While Main(e) International Consulting LLC makes every effort to provide accurate and complete information, various data such as statistics etc. may change prior to updating. Main(e) International Consulting LLC provides no warranty, expressed or implied, as to the accuracy, reliability or completeness of the furnished data. 31