ENERGY POTENTIAL OFFSHORE WIND NORTH SEA: 150 GW. STRABAG OFFSHORE WIND. The Base of Power.

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1 Cuxhaven Building a New Economy Through Offshore Wind Offshore Wind Energy in Ireland 14th October 2010, Burlington Hotel Dublin Dr.-Ing. Klaus Weber 14. October 2010

2 ENERGY POTENTIAL OFFSHORE WIND NORTH SEA: 150 GW 2

3 ENERGY POTENTIAL OFFSHORE WIND NORTH SEA: 150 GW Total invest some 500 bn 3

4 ENERGY POTENTIAL OFFSHORE WIND NORTH SEA: 150 GW MEG I 4

5 COMPANY STRABAG SE project markets - Biggest construction group in Germany and Austria - Leading construction company in Central and Eastern Europe (CEE) - 75,000 employees - Annual turnover 13 billion euro Non-European project markets 5

6 PROJECTS IN THE GERMAN NORTH SEA 40 m waterline 25 m waterline comparable to Irish Sea 6

7 FOUNDATIONS Jacket Tripod Monopile Gravity 7

8 STRABAG OFFSHORE Range of Services - STRABAG as general contractor for offshore foundations - Package solutions: production, logistics, installation - Own implementation planning of engineering bearing structures - Project management and implementation of offshore wind farms - Ocean Energy: development, planning and implementation of wave and current power plants 8

9 STRABAG SERIAL SYSTEM 360 Engineering - Holistic study of the complex load range at wind energy plants. - Claim: fundamental understanding of specific offshore requirements. - Target: optimisation of the entire system and maximum possible minimising of risk. 9

10 STRABAG SERIAL SYSTEM Gravity Foundation - Foundation system for large-scale production - Use in water depths to approx. 40 metres - Rapid and cost-effective implementation - Minor dependency upon steel prices - Environmentally sound installation, no ramming - Ship-friendly collision behaviour - Completely removable 10

11 GEOMETRY FOR GLOBAL TECH I size of foundation depends on water-level and depht of soil preparation main masses standardised horizontal dimension for all locations in the project area concrete m³ 64,50 m to 61,50 m steel kg/m³ prestressing steel c. 125 to sand m³ 11

12 GRAVITY FOUNDATION platform boat-landing prestressed concrete, circular ring sand ballast in shank and box girder prestressed concrete, box girder foundation plates 12

13 REFERENCE STRABAG Gravity Foundation Arkona Basin South East First use of the STRABAG gravity foundation Overall planning and project management by STRABAG Construction period: 09/2006 to 11/2006 Total height: 120 metres Water depth: 24 metres 13

14 TEST SITE IN CUXHAVEN SCALE 1:1 - detailed study of soil structure interaction - scientific research programm simulation of wave loads using tension cables and hydraulic system 14

15 TEST SITE IN CUXHAVEN SCALE 1:1 4. October

16 STRABAG INSTALLATION VESSEL - Multifunctional, mobile offshore construction equipment - Mostly independent from weather and sea conditions - Minimization of offshore operations Onshore pre-installation of the tower and wind turbine (if appropriate also the rotor blades) 16

17 STRABAG INSTALLATION VESSEL semi-submersible floating technology dynamic positioning system oil platform STRABAG installation vessel 17

18 STRABAG INSTALLATION VESSEL high-performance Offshore installation vessel with HP 18

19 SEABED PREPARATION building pit and gravity base building pit 0,7 % of total area building pit with scour protection 0,35% of total area scour protection building pit after refilling 0,06 % of total area refilling 19

20 RESEARCH OF CURRENT EFFECTS 1. modell tests at University Hanover, M 1:50 2. large scale tests, University Hanover at the moment 3. nummerical calculation using FEM material removal material deposition 20

21 STRABAG SERIAL SYSTEM Production Terminal - Industrial plant for large-scale production - High automation: assembly line procedure - Flexible adjustment of capacities - complete pre-installation onshore 21

22 PRODUCTION TERMINAL CUXHAVEN 22

23 PRODUCTION TERMINAL IN CUXHAVEN 23

24 SUMMARY GRAVITY BASED FOUNDATION SYSTEM 1. Innovative gravity based foundation system - cost effective concrete - environmental advantages (no noise emission while piling) 2. Production terminal for large scale production in Cuxhaven. 3. Low Offshore risks due to pre-installation onshore. 4. Robust Offshore installation (Hs = 2,5 m). 5. General contractor for civil works. - reduced interfaces - ebit-advantage due to early income 24

25 CUXHAVEN MASTER PLAN

26 PRIVATE AND PUPLIC INVESTMENT IN CUXHAVEN puplic invest Mio. public invest Mio. private invest Mio. private invest to Mio. total invest in Cuxhaven to Mio PRIMARY JOBS 26

27 MASTER PLAN PRODUCTION SITE Cuxport-Terminal site 1-3 with SLP site 4 (2012) site 5-7 (planed) Offshore Terminal site 8 Offshore Terminal site 9 (2011) /

28 CUXHAVEN HARBOUR 28

29 CUXHAVEN OFFSHORE TERMINAL 2007/2008 Frühjahr

30 CUXHAVEN OFFSHORE TERMINAL AUGUST

31 BUILDING A NEW ECONOMY THROUGH OFFSHORE WIND We are ready to go Dr. Klaus Weber STRABAG Offshore Wind GmbH Tel