Hywind - Floating wind power production

Alexandra Bech Gjørv
Senior Vice President, Norsk Hydro ASA



Oil & Energy
2006-...
Hydro is developing innovative energy solutions
based on renewable resources




Dato: 2006-05-24 • Side: 3 • Oil & Energy
5


Technical data


  WTG:                      2,3 MW
  Turbine weight:           138 tonnes
  Turbine height           ...
Many advantages compared to near shore wind


       Higher winds further out
       Relatively robust and cost
       eff...
6




Offshore location 10 km off the coast of Karmøy, Norway
7



    Long way from idea to commercial concept



                     Current                                    Onsho...
Extensive model test at Marintek in Trondheim

        Simulated water depth - 320 meters
        Significant wave height:...
Challenges for floating wind turbines
       The Challenge:

               Achieve satisfactory fatigue strengths
       ...
Active control reducing turbine motion




Dato: 2006-05-24 • Side: 10 • Oil & Energy
Innovative cost-efficient anchoring concept




Dato: 2006-05-24 • Side: 11 • Oil & Energy
9




 Taking the lead from shore to sea


                                        10 m/s                           11 m/s...
Floating wind turbines
Potential for offshore power supply




                                                           ...
125 TWh Hywind




A large long term potential

        Natrual gas from Ormen Lange will produce 125 TWh/year for 20 year...
10




                                                          Bridgehead market

                                      ...
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Hywind Floating Wind Power Production

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Hywind Floating Wind Power Production

  1. 1. Hywind - Floating wind power production Alexandra Bech Gjørv Senior Vice President, Norsk Hydro ASA Oil & Energy 2006-05-24
  2. 2. Hydro is developing innovative energy solutions based on renewable resources Dato: 2006-05-24 • Side: 3 • Oil & Energy
  3. 3. 5 Technical data WTG: 2,3 MW Turbine weight: 138 tonnes Turbine height 65 m Rotor diameter: 82,4 m Draft hull: 100 m 5300 m3 Displacement: Diameter at water line: 6m Diam. submerged body: 8,3 m Water depths: 120-700 metres Mooring: 3 lines
  4. 4. Many advantages compared to near shore wind Higher winds further out Relatively robust and cost efficient design Minimal offshore work Independent of location, less conflicts Flexible on grid connection Dato: 2006-05-24 • Side: 7 • Oil & Energy
  5. 5. 6 Offshore location 10 km off the coast of Karmøy, Norway
  6. 6. 7 Long way from idea to commercial concept Current Onshore connected parks status Medium park Market Focus Demo Cost Focus Model test Concept & theory Technological Focus
  7. 7. Extensive model test at Marintek in Trondheim Simulated water depth - 320 meters Significant wave height: 3 – 14 meters (100 years condition) Wind speeds: 8 – 30 m/sec Model tests showed a very good correlation with teoretical models Dato: 2006-05-24 • Side: 8 • Oil & Energy
  8. 8. Challenges for floating wind turbines The Challenge: Achieve satisfactory fatigue strengths in the steel tower Low fabrication and installation cost The Solution: A deep bouy (SPAR) with low dynamic response compared to the displacement 3 point anchoring system with low cost components and installation cost Fabrication, completion and testing in sheltered waters Dato: 2006-05-24 • Side: 9 • Oil & Energy
  9. 9. Active control reducing turbine motion Dato: 2006-05-24 • Side: 10 • Oil & Energy
  10. 10. Innovative cost-efficient anchoring concept Dato: 2006-05-24 • Side: 11 • Oil & Energy
  11. 11. 9 Taking the lead from shore to sea 10 m/s 11 m/s 9 m/s 7 m/s 3 MW 3-5 MW 5+ MW 5+ MW 0-30 30-70 100-700 5 MW + WTG Efficient O&M Jacket installation
  12. 12. Floating wind turbines Potential for offshore power supply Shore Capacity Total load 100 MW 100 MW Max capacityt 200 MW Dato: 2006-05-24 • Side: 14 • Oil & Energy
  13. 13. 125 TWh Hywind A large long term potential Natrual gas from Ormen Lange will produce 125 TWh/year for 20 years The same amount can be produced from a Hywind windfarm with a size of 20 x 40 miles – for ever Dato: 2006-05-24 • Side: 16 • Oil & Energy
  14. 14. 10 Bridgehead market Medium-term market opportunities Floating wind turbines have global potential Map: NASA Deepwater sites exist near major consumption areas • Market assessment based on: • • Water depth Wind conditions • Regulatory regimes • Market size • Price/incentives schemes •

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