Far-Offshore-Windprojects Results of the First German Offshore Windpark alpha ventus

Transcription

1 Far-Offshore-Windprojects Results of the First German Offshore Windpark alpha ventus Coordination centre renewable energies Reducing costs of the onshore- and offshore-wind energy: Challenges and opportunities for the sector in Germany and France , Paris

2 EWE A Strong Group of Companies With an annual turnover of 7.5 billions euro EWE ranks among the important energy suppliers in Germany. The EWE-group provides for approx million power customers and 1.54 million domestic gas customers. With a process gas capacity of 1.7 billion m³ EWE nationwide numbers among the most important suppliers of storage capacities for natural gas. EWE NETZ operates one of the safest electric supply networks within Europe. The EWE-Green Current Subsidiary NaturWatt markets electric current produced by renewable energy resources throughout Germany. With about 670,000 customers EWE TEL is one of the biggest suppliers of telecommunication services within this region. The subsidiary swb runs its own electricity stations with a total net power of more than 1,000 MW. The 100%-subsidiary BTC ranks among the most important IT consulting companies in Germany. In 2012 founding of the EWE Offshore Service & Solutions GmbH (abbr.: EWE OSS) as spin-off for services of the offshore-wind-branch Costs of Windenergy

3 EWE Offshore Service & Solutions GmbH Offshore-Solutions from One Source! EWE Offshore Service & Solutions GmbH Offshore-Know-How of the Entire Group (Netz, BTC, TEL) Consulting Implementation Operation Individual consulting about technical questions Expert support for technics Due diligence Preparation of HSE-, training- and security-concepts Preparation of O&M concepts Coordination and control of certification- and test-processes Customer-specific trainings Project board Project management Project coordination Application and support for permissions Implementation of permit conditions Coordination of certificationand test-procedures Coordination and supervision of tenders Operation of offshore-wind parks Support for offshore-activities Coordination of offshore-logistics Survey of HSE-requirements Organisation of security training courses (BOSIET / HUET) Organisation of environmental monitoring Organisation authorities (BSH- Federal Maritime and Hydrographic Agency / official approvals) Costs of Windenergy 3

4 Titel Results from alpha ventus Datum Autor/Redner alpha ventus The world s first far offshore wind farm

5 alpha ventus First German offshore wind park, built by a consortium of energy utilities EWE, E.ON and Vattenfall alpha ventus with pioneering character, being Germany s first offshore wind farm and first far-shore wind farm worldwide key research project for further development of German offshore wind industry 2011: First complete operational year 5 5

6 alpha ventus Key figures offshore park alpha ventus: 45 km north of Borkum at 30 m water depth 12 wind turbines with 5 MW output each, i.e. 60 MW 6 AREVA Wind 6 REpower 5M One transformer station and its steering from the mainland: Norden: Operation Center Oldenburg: Transformer Station Operation Center Airport for maintenance helicopter flights: Emden Harbor for service boat: Norden-Norddeich 6

7 Location 7

8 Chronology Start: 2006 with the founding of DOTI Installation of transformer station: 2008 Installation of 6 AREVA Multibrid and 6 REpower 5 megawatt wind turbines from April to November 2009 Sea cable successfully connected to the German grid: 2009 First feed-in: August 2009 Park completed: December 2009 Exchange of all six AREVA nacelles due to faulty bearings completed by October : First complete operational year 8

9 A view of the completed offshore wind farm and transformer station Costs of Windenergy 9

10 Conditions offshore: October 2009 Rough weather conditions: key factor for offshore and far-shore in the German North Sea Costs of Windenergy 10

11 Conditions offshore: October 2009 Rough weather conditions: key factor for offshore and far-shore in the German North Sea Costs of Windenergy 11

12 Lessons learnt: building and operating a far-shore wind farm Key-factors Weather Ships / Offshore Logistics Personnel Technology Grid connection Regulations 12

13 Lessons learnt: building and operating a far-shore wind farm Weather unpredictable for longer periods predictable for shorter periods, e.g. for planning short-term maintenance works Quick built up of knowledge: 2005: data collection by FINO 1 available for : data collection by FINO 1, alpha ventus and weather services available At present: two years of operations and installation period give first insights into real offshore weather/wind conditions, but: It s still too early to make long-term predictions, e.g. with respect to annual/monthly energy yield 13

14 Lessons learnt: building and operating a far-shore wind farm Wind gauge at full speed Costs of Windenergy 14

15 Lessons learnt: building offshore Ships Ships need to be adapted to needs of far-shore wind Size matters: think big in ships and offshore logistics Quick built up of knowledge 2005: Germany very small player on this market 2012: German Bight is a factor on the international market; German capacities are being slowly built up 15

16 Lessons learnt: building offshore Thialf in Costs of Windenergy 16

17 Lessons learnt: building offshore Personnel First collaboration of German utilities engineers with offshore personnel Fast built-up of both capacities and capabilities at EWE, E.ON and Vattenfall Quick built up of knowledge: 2005: Qualified personnel nearly non-existent in Germany 2012: alpha ventus pioneers are now working on the follow-up projects Riffgat, Amrumbank and Dan Tysk 17

18 Lessons learnt: building offshore Grid connection No.1 bottleneck-issue: low capacities high costs and small time-windows for cable laying per year Quick built up of knowledge 2005: planning in it s early stages 2012: coordinated offshore connections in progress 18

19 Lessons learnt: building offshore Technology Offshore is not onshore: Larger installations Need for robust material (challenging weather conditions, corrosion) Offshore works: technology is viable, but still too many manhours in maintenance needed Quick built up of knowledge 2005: offshore-turbines of the 5MW class in their early stages (prototypes) 2012: up to 98% availability of the 12 alpha ventus wind turbine 19

20 Lessons learnt: building offshore Jacket foundations, Costs of Windenergy 20

21 Lessons learnt: building offshore Energy regulations Important: Regulations (feed-in tariff) set standards for moving energy generation towards renewable era Quick built up of knowledge 2005: Regulations were nearly not existent 2012: Complex regulations, more adapted to needs of the nascent German wind offshore sector (but still with need of optimization) 21

22 Operational Data, Yield Costs of Windenergy 22

23 Operational Data, Yield

24 Operational Data, Availability

25 Operational Data, Logistics Costs of Windenergy 25

26 Operational Data, Yield 2011/ : 15% above the yield forecasts In the first three quarters of 2012: more than 15% above the yield forecasts High energy yield of alpha ventus since start of operation gives 1 st positive outlook on the potential of far-shore wind parks (up to full load hours instead of forecast of 3.900) per year. That means a load factor of more than 50 %! 26

27 Operational Data, Costs 2011: Total costs for operation - more than X ct/kwh (without depriciation) - therefrom insurance: ~ 15 % - therefrom windturbine: ~ 45 % - therefrom logistics: ~ 15 % - therefrom ecological monitoring: > 8% 27

28 Maintenance and HSE Up to 450 hrs of planned maintenance per wind turbine per year (less in reality) persons offshore per year (in 2011) 2011 Boat transfers: 150 Persons approx. (ship): Bridging steps: Helicopter flights: 160 Persons approx. (heli): 540 Hoist Cycles:

29 Thank you for your attention EWE Offshore Service & Solutions GmbH Rummelweg 14 D Oldenburg Tel / 4 41 / claus.burkhardt@ewe.de