© Siemens AG 2011 Hull Offshore Wind Workshop Siemens Wind Power A/S, Thomas Mousten, Offshore Wind Americas

© Siemens AG 2011 Answers provided by 15 Divisions in three Sectors SectorsDivisions Industry Energy Healthcare  Industry Automation  Drive Technologies  Building Technologies  Imaging & IT  Workflow & Solutions  Diagnostics  Osram  Industry Solutions  Mobility  Energy Service  Power Transmission  Power Distribution  Oil & Gas  Fossil Power Generation  Renewable Energy

© Siemens AG 2011 We are globalizing our offshore expertise and are ready to serve the US market UK (Frimley) Denmark, HQ (Brande) Netherlands (Den Hague) Germany (Hamburg) China (Beijing) North America (Boston) Map of Siemens offshore offices

© Siemens AG 2011 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 MW  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 leadership SWT  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  Monopiles  Gravity  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 Floating Potential future concept for deep positions Monopiles Gravity Jackets Floating

© Siemens AG 2011 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

© Siemens AG 2011 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 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

© Siemens AG 2011 Thank you very much for your attention! Questions?