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Efficient installation of offshore wind farms…also in the futureCase study: Burbo Banks Offshore Wind Farm.Rasmus Lund, Siemens Wind Power A/S

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Siemens’ offshore track record

Siemens’ offshore wind turbines

Efficient installation of offshore wind farms

Case study: Burbo Banks Offshore Wind Farm

Agenda

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Worldwide market leader in offshore projects

1) In progress

Lynn / Inner Dowsing, UK

54 turbines (2008)

Rhyl Flats, UK 25 turbines1)

London Array, UK 175 turbines1)

Sheringham Shoal, UK 88 turbines1)

Walney, UK 102 turbines1)

Burbo Banks, UK 25 turbines (2007)

Frederikshavn, DK 1 turbine (2003)

Baltic I, DE 21 turbines1)

Rødsand/Nysted, DK 72 turbines (2003)

Vindeby, DK 11 turbines (1991)

Middelgrunden, DK 20 turbines (2000)

Samsø, DK 10 turbines (2002)

Rønland, DK 4 turbines (2002)

Horns Rev II, DK 91 turbines1)

Gunfleet Sands, UK 48 turbines1)

Greater Gabbard, UK 140 turbines1)

Rødsand II, DK 90 turbines 1)

Hywind, NO 1 turbine (2009)

Lillgrund, SE 48 turbines (2007)

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2.3 MW - 82 m rotor introduced

2002, certified for IEC IA

2.3 MW - 93 m rotor introduced 2005, certified for IEC IIA

2.3 MW - 101 m rotor introduced 2009, certified for IEC IIB

3.6 MW - 107 m rotor introduced

2004, certified for IEC IA

3.6 MW - 120 m rotor planned for installation late 2009, to be certified for IEC IA/B

Two new family members for Siemens offshore

Siemens’ offshore line-up

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Larger projects

Projects located further offshore

Year-round installation

Trends

Efficient installation is becoming more critical

Increased focus on efficient installation of offshore wind farms

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Improved wind turbine design for easy interface and safe installation

Well planned onshore pre-assembly and tests at base harbor

Efficient wind turbine component arrangement and planning of installation vessels

Ensuring co-operation with owner and all suppliers in design, planning and execution

Focus on efficient quality control at base harbor

Choice of an efficient buffer system at base harbor

Key elements of efficient installation

There are many pieces to the puzzle when it comes to efficient installation

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An example: Burbo Banks

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25 x 3,6 MW

Round 1 UK project: 90 MW output

Tip height 137m above mean sea-level.

Water depth: 7-12 m

Tide: +/- 5m

Distance to shore: 7-12 km

Mean wind speed: 9 m/s

The wind farm is generating enough electricity to power the equivalent of over 80,000 homes

Key project facts

107 m

83,5 m

137 m

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25 pcs SWT-3.6-107 offshore wind turbines

Transportation, installation, commissioning and tests

34kV switchgear

SCADA system

5 years service and maintenance

Scope of work

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UK

BladesTowers

NacellesHubsPower units

Logistics

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One vessel for 6.25 turbines

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Location

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Port layout

Port of Mostyn, UK

Purpose- Logistics centre- Buffer

Arrangement - 45,000 m²

Main tasks at harbor- Pre-assembly- Test- Quality control- Vessel loading

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Port layout

Port of Mostyn, UK

Purpose- Logistics centre- Buffer

Arrangement - 45,000 m²

Main tasks at harbor- Pre-assembly- Test- Quality control- Vessel loading

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Nacelle loading

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Blade loading

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Installation jack-up

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Tower installation

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Nacelle installation

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Blade installation

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End result

All 25 SWT-3.6-107 wind turbines were successfully installed in 43.5 days, well ahead of schedule

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Another example: Lillgrund110 MW – 48 x SWT-2.3-93

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Example 3: Lynn & Inner Dowsing194 MW – 54 x SWT-3.6-107

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Example 4: HywindThe world’s first floating WTG – 2.3 MW – 1 x SWT-2.3-82

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Pre-assembly and tests at base harbor

Arrangement of installation vessels

Installation within time schedule

Very good co-operation with clients and subcontractors

Detailed planning of all phases early in the project

Importance of pre-assembly setup and efficient quality control at base harbor

Importance of an efficient buffer system

Sufficient time lag between difference project phases

Lessons learned

Successes and lessons learned

Successes