© Siemens AG 2011

Hull Offshore Wind Workshop Siemens Wind Power A/S, Thomas Mousten, Offshore Wind Americas

© Siemens AG 2011

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Size of offshore

wind farms (MW)

Water depths

(m)

Distance to shore

(km)

Rating

(MW)

Rotor Diameter

Range (m)

> 30> 30155

open> 500906

> 7035122

> 63,630,5

>1501208237

2020s2010s2000s1990s

Size of offshore

wind farms (MW)

Water depths

(m)

Distance to shore

(km)

Rating

(MW)

Rotor Diameter

Range (m)

> 30> 30155

open> 500906

> 7035122

> 63,630,5

>1501208237

2020s2010s2000s1990s

Longer and Lighter Blades

Trends in Offshore Wind Turbine Technology-Hub height & Rotor sizes

WTG’s are getting larger and are installed farther off shore and in locations with deeper water depths

The offshore wind industry is currently offering blades in the 120m range

Indications are pointing towards rotors in the >150m range for offshore turbines.

Siemens Wind Power followed this trend with the SWT 3.6-120MW

Tests indicate that the new machine will generate approx. 10% more electricity in comparison to similar wind turbines.

The turbine towers are becoming taller as a consequence of the larger rotors.

Financial modeling also shows benefits from taller towers due to better wind resources but is also associated with higher costs for foundation and tower construction.

© Siemens AG 2011

Trends in Offshore Wind Turbine Technology-Optimization of Availability

The TCM® system allows for the continuous online vibration monitoring of the wind turbine with 6 sensors and allows for the assessment of:

Gearbox Main bearing Generator

Turbine Condition Monitoring (TCM®)

The purpose of the TCM® system is to: Optimize the planning of service works, reduce service costs and down time Perform preventive repair of components before breakdown – automatic stop

of wind turbine in case of excess of vibration limits Improves possibilities for further technical development

© Siemens AG 2011

Picture from installation to follow

Facts

Our strategy for technology leadershipSWT-3.0-101

3.0 MW gearless direct drive turbine Rotor diameter: 101 m No gear box Reduced number of parts Reduced maintenance costs Synchronous permanent magnet generator High efficiency Compact design allows for easier transportation and

installation

The 6-MW direct drive wind turbine will be launched later this year

Will be particularly suitable for large offshore wind

power plants

© Siemens AG 2011

Trends in Offshore Wind Turbine Technology-Foundations

0 - 10

Monopiles

Gravity

10 - 35

Monopiles

Jackets

From 35

Jackets

Floating (future)

Water depth (m)

Foundation type

Foundation : monopiles not necessarily the suitable solution

Tower interface : two potential cost saving solutions

Having one structure: More even distribution of stiffness steel reduction

Improving arrangements (secondary steel):Specific offshore interface design (flanges, platforms, lay down area, access, etc) steel reduction

Foundation type Cost saving potential

Monopiles Known technology

Gravity Known technology

Jackets

Less steel

Stiffer structure

Not yet industrialized

FloatingPotential future concept for deeppositions

Monopiles

Gravity

Jackets

Floating

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Hywind: An example of how we are tackling trends in offshore wind

Cooperation on technology with Statoil to develop the world's first floating offshore installation

In 2009 Siemens installed the first wind turbine for the demonstration unit off the coast of Norway

Floating offshore turbines could be installed at sites with greater water depths

Hywind

Source: SWP

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Trends in the offshore Balance of Plant-Vessels

Able to install turbine quickly

Able to install pre-commissioned components

Working year round even in high down time period

Designed for specific purpose

Future vessels need to be…

Purpose build vessel is a key component in a project

To ensure vessel availability in the US:

Short term the Jones Act needs to allow for foreign build vessels; either in general or be project specific waivers

Long term U.S. shipyards and/or ship operators should team up with European experience and start installation vessels development in the U.S.

© Siemens AG 2011

Offshore port requirements:

Unrestricted access to, and permit to work in the area, 24/7 and 365 days a year

A contiguous piece of level land with a total area of 2000 m2 per turbine (min. 50000 m2)

Suitable water depths at the load-in quay of ~ 10m allowing ocean-going coasters (cargo vessels)

Indoor high ceiling storage

Good infrastructure within the construction area and the quay side

Utilities: Power, water, internet and phone

Trends in the offshore Balance of Plant-Ports

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Thank you very much for your attention!

Questions?