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From pioneering to industrializing offshore wind: Lessons learned from Horns Rev II

From pioneering to industrializing offshore wind: Lessons learned from Horns Rev II Stockholm, September 14th, 2009. Contents. Offshore wind challenges and DONG Energy introduction Key lessons learned from HRII and key steps in industrializing offshore. DONG Energy – an introduction.

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From pioneering to industrializing offshore wind: Lessons learned from Horns Rev II

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  1. From pioneering to industrializing offshore wind: Lessons learned from Horns Rev II Stockholm, September 14th, 2009

  2. Contents Offshore wind challenges and DONG Energy introduction Key lessons learned from HRII and key steps in industrializing offshore

  3. DONG Energy – an introduction DONG Energy is one of the leading energy companies in Northern Europe We are headquartered in Denmark. Our business is based on procuring, producing, distributing and trading in energy and related products in Northern Europe DONG Energy has app. 6,000 employees and had a turnover of more than DKK 60 billion in 2008

  4. DONG Energy has pioneered offshore wind MW Total DE share (2009) 00 01 02 03 04 05 06 07 08 09 10 Middelgrunden 40 20 Horns Rev I 160 64 • Constructed 551 MW of the current appr. 1 GW offshore capacity • Building the worlds largest offshore wind farm to date (HRII) Rødsand 165 133 Kentish Flats 90 0 Barrow 90 45 Burbo 90 90 Horns Rev II 209 209 Gunfleet Sands I & II 173 173 Total 1018 734

  5. DONG Energy holds a substantial offshore wind pipeline – under construction and planning Offshore wind projects under construction (1063 MW) Offshore wind projects under engineering/planning (more than 1,500 MW) • More than 1000 MW offshore wind under construction • Pipeline to ensure growth past 2013 • Furthermore, offshore pipeline could be strengthened from DK offshore tender, UK round 3 and other licences Horns Rev II (209 MW) Wigtown Bay(280 MW) West of Duddon Sands (165 MW)* Walney III(180 MW) Walney I+II (367 MW) Westermost Rough (240 MW) Borkum Riffgrund I (134 MW)* Borkum Riffgrund II (388 MW)* Gunfleet Sands I+II (172 MW) London Array I (315 MW)* London Array II (185 MW)* * Figures represent DONG Energy's share of the projects

  6. Offshore wind in the EU is expected to see high growth rates over the coming decades Source: "Pure Power", EWEA March 2008

  7. 107 Offshore wind is still more expensive than onshore – and the renewable technologies are more expensive than thermal Index: coal=100; 2010 forward fuel prices (May 2009) 172* Coal Gas Onshore Offshore * Of which 5-10% covers export cable and substation Source: Poyry Energy Consultants, DONG Energy estimates on full load hours

  8. Contents Offshore wind challenges and DONG Energy introduction Key lessons learned from HRII and key steps in industrializing offshore

  9. The installation process can be divided in many intra-linked processes Synergies between parks Geotechnical exploration • Scale advantages on vessels Installation of foundations • Improvement of design • Optimisation of installation process Installation of WTG • Standardisation of installation concept • Optimisation of installation process Commisioning • Repeated use of generator • Optimization of transfer vessels Cable installation • Optimisation of installation concept • Integration of cable and WTG installation Substation installation • Standardisation of design • Scale advantages in procurement Onshore grid connection • Scale advantages in procurement

  10. HR II: The project and key lessons learned • Project Details • Generating capacity 209 MW • 91 Siemens 2.3 MW turbines • CAPEX milDKK 3,500 • 35 km2 wind farm area • Water depths between 9 and 18 meters • Tidal range up to 1.2 meters • Average wind speed 9.7 m/sec. Synergies with earlier projects • 2.3 MW WTG employed again • Same installation vessel used • Layout optimised

  11. Applying the same turbine enhances the learning curve for installation CONCEPTUAL WTG INSTALLATION Installation time Time-saving potential Current HRII experience Future desired state 0 20 75 # of WTGs

  12. , Strict monitoring on progress can ensure correction of time-table delay ILLUSTRATIVE EXAMPLE Horns Rev 2 – Installation progress curve WTG INSTALLATION Progress 100% Planned % complete Actual % complete 0% Weeks

  13. Next step: Pipeline approach in order to capture synergies CONCEPTUAL • Operational issues in installation • Smooth production cycle • Sourcing component packages, incl. interfaces • WTG installation • Foundation installation • Array and export cable installation • Commissioning • Test and hand-over • MW • Years • Years • Scale advantage in sourcing • Improved planning – interface management and installation flow • Minimizing risk – leveraging technical learning curve

  14. Thank you for your attention Horns Rev 1 offshore wind farm, Denmark

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