Offshore Wind O&M. By Lone Oestergaard Global Operations Manager, Service Siemens Wind Power A/S. INTPOW Norway, November 2012

Agenda Introduction Siemens monitoring and diagnostics Predictive and preventive maintenance Modernizations & Upgrades Logistics - Maritime Solutions Service Offshore Programs Servicing the 6.0 MW Training Safety! Siemens AG / Service Renewables 2012. All rights reserved

Siemens Wind Power s offshore portfolio A lifetime of customer value Planning Production Installation Operation & Maintenance With Siemens as a partner, there will be no loose ends in our customers wind power projects. Working intimately with our customers is key to finding the perfect solution for every site and need. Being a part of Siemens, one of the world s largest suppliers of products and solutions along the entire energy conversion chain, we offer a holistic view.

Siemens Service Wind offers world class services and products for wind turbines Regular Service & Maintenance Trouble shooting & Repair Modernizations & Upgrades Value adding Services Turbine inspections Scheduled maintenance Unscheduled maintenance Repairs Spare parts Improvement of turbine, e.g.: Power curve upgrade Turbine load control Remote monitoring & diagnostics Training Turn key solutions Hand Over to Service End of Warranty Project Management Warranty Period Post Warranty Period Year - 3 Year 0 Year 5

Siemens wants to offer service solutions and provide the highest value to our customers Schematic: Strategic Development of SWP Service offerings Solutions SWP SE 2016 Offering SWP SE 2012 SWP SE 2009 Products Low Value to Customer High Source: SWP Service Page 6

Service Product Portfolio 4 main focus areas for on- and offshore applications Service Programs Flexible portfolio of service agreements to fit all customer needs Spare Parts, Tools and Repairs Ensure competitive solutions during the life cycle Mods & Ups Products and features for optimization of the existing operating SWP fleet Strategic Products Exploring new solutions to maximize Siemens potential Page 7

Siemens: Extensive Offshore experience with >2,6GW installed and another >3GW coming soon Norway Hywind, NO 1 x SWT-2.3-82 - 2 MW (2009) Sweden Lillgrund, SE 48 x SWT-2.3-93 -110 MW (2007) Finland Pori, FIN 1 x SWT-2.3-101 - 2 MW (2010) China Longuyang Rudong, CHN 21 x SWT-2.3-101 48 MW UK Denmark Burbo Banks, UK 25 x SWT-3.6-107 - 90 MW (2007) Lynn / Inner Dowsing, UK 54 x SWT-3.6-107-194 MW (2008) Gunfleet Sands, UK 48 x SWT-3.6-107-173 MW (2009) Rhyl Flats, UK 25 x SWT-3.6-107 - 90 MW (2009) Greater Gabbard, UK 140 x SWT-3.6-107 504 MW Sheringham Shoal, UK 88 x SWT-3.6-107 317 MW London Array, UK 175 SWT-3.6-120 630 MW Walney, UK 51 x SWT-3.6-107 184 MW 51 x SWT-3.6-120 184 MW Lincs, UK 69 x SWT-3.6-120 248 MW Gwynt Y Mor, UK 160 x SWT-3.6-107 576 MW West of Dudden Sands, UK 108 x SWT-3.6-120 389 MW Teesside, UK 27 x SWT-2.3-93 62 MW Germany Baltic I, DE 21 x SWT-2.3-93 - 48 MW (2010) Baltic 2, DE 80 x SWT-3.6-120 288 NM Borkum Riffgat, DE 30 x SWT-3.6-107 108 MW Dan-Tysk, DE 80 x SWT-3.6-107 288 MW Borkum Riffgrund 1, DE 77 x SWT-3.6-120 178 MW Meerwind Sud Ost, DE 80 x SWT-3.6-120 288 MW Amrumbank West, DE 80 x SWT-3.6-120 288 MW Vindeby, DK 11 x 0.45 MW - 5 MW (1991) Middelgrunden, DK 20 x SWT-2.0-76 - 40 MW (2000) Samsø, DK 10 x SWT-2.3-82 - 23 MW (2002) Rønland, DK 4 x SWT-2.3-93 - 9 MW (2002) Rødsand/Nysted, DK 72 x SWT-2.3-82 -166 MW (2003) Frederikshavn, DK 1 x SWT-2.3-82 - 2 MW (2003) Horns Rev II, DK 91 x SWT-2.3-92 - 209MW (2009) Rødsand II, DK 90 x SWT-2.3-93 - 207MW (2010) Anholt, DK 111 x SWT-3.6-120 400 MW Page 8

Siemens Monitoring and Diagnostics Predictive analysis and remote diagnostic service Preventive maintenance and 24/7 monitoring adds value to customers wind farms as production losses are minimized Siemens Condition Monitoring (TCM) as well as the Siemens WebWPS SCADA (Supervisory Control And Data Acquisition) Turn unplanned into planned service Reduce time spent offshore Ensure high wind operations and hence optimize cost of energy Early detection and diagnostics can help optimize maintenance planning > 4,500 turbines equipped with diagnostics systems First system delivered in 1998 24/7 surveillance as an essential cornerstone Remote error fix rate ~ 80 percent Average response time 10 minutes

Siemens Monitoring and Diagnostics Turbine Condition Monitoring Siemens Turbine Condition Monitoring How it works Turbine Condition Monitoring measures vibrations in the gearbox, generator, main bearing, blades, towers, and other major systems SVM sensors conduct structural vibration analyses and monitoring through built-in twoaxial accelerometers The M-system acquires data and conducts front-end analyses and alarm evaluations in real time for early detection of weakness or failure MCM accelerometers conduct machine condition monitoring

Predictive and preventive maintenance Predictive and preventive maintenance save valuable resources by reducing downtime * Pls. note that the definition of predictive and preventive maintenance differs from company to company ** RDA is used for offshore services only Page 13

Modernizations and Upgrades Generating additional value for our customers Improve the turbine to achieve better performance and more yield Power enhancement Availability increase Life-time extension Performance: Vortex generator Availability: Ultrasonic anemometer Efficiency improvement Better reliability Data processing & control Reliability: Oil particle counter Efficiency: Grid support at no wind & update remote control system

Modernizations and Upgrades Example: Power Curve Upgrades Power Curve Upgrade Aerodynamic upgrades including Vortex generators, DinoTail and DinoShell TM components Reduce levelized cost of electricity Applicable to several rotor types and turbines, onshore and offshore Product for SWT-2.3-82, SWT-2.3-93, SWT-3.6-107 Customer value: +1.5% in annual energy production ~7,500 EUR/turbine/year* ~135,000 EUR over lifetime* Reduce levelized cost of electricity * Based on typical US site, at an annual mean wind speed of 7.5 m/s * Based on typical US site

Framework for selecting best logistical setup SOV Platform Weather/Site Wind Wave Current Distance WTGs Test Knowledge Database Performance Site Specific Concepts Lessons learned Wind farm / Logistic Simulation CTV/Heli Flotel Preferred Setup CTV / advanced CTV Helicopter SOV Flotel Platform The further from shore the wind farm is located, finding the right logistic solution is key

Offshore Logistic Solutions Siemens offers a range of flexible solutions Logistic solutions are based on weather complexity and distance from shore Weather complexity 1) Advanced Vessel and Helicopters Planned activities with advanced transfer vessels Unplanned activities with helicopter Transfer Vessel Planned and unplanned activities with transfer vessels SOV (Service Operations Vessel) Planned and unplanned activities from SOV with direct access system supported by workboat. Wave height Platform Solution (Platform access to WTG with helicopters & CTV) Planned and unplanned activities from platform with transfer vessels, helicopters or smaller operations vessels with direct access system Floating Solution (Flotel / SOV) Scheduled: Planned campaign with Flotel or SOV and transfer vessel or helicopter Unscheduled: Fit for purpose vessels, helicopters Distance from shore (miles) 1) Assumed weather downtime Page 19

UK R3 case study: Different complexity of zones allows for various logistic solutions UK Round 3 zones 1 Zone GW O&M concept 2 1 2 Moray Firth 1.3 Floating Firth of Forth 3.5 Floating 3 3 4 Dogger Bank 9.0 Platform Hornsea 4.0 Platform 9 4 5 Norfolk 7.2 Floating 5 6 7 Hastings 0.6 Advanced vessel West of Isle Wight 0.9 Advanced vessel 8 8 Bristol Channel 1.5 Advanced vessel 7 6 9 Irish Sea 4.2 Floating Page 20

Value Service Offshore Product Portfolio (400O) - Offshore programs combined with flexible Selected Service Products Siemens Wind Power Service Programs - Offshore 430O (Warranty) 420O (Availability) Offshore Selected Services Parts Warranties Offshore Selected Services Offshore Logistic Solutions Remote Diagnostic Services Availability Warranty Offshore Logistic Solutions Remote Diagnostics Services Availability Warranty Scheduled Service Scheduled Service Complexity Logistic Solutions Transfer Vessel Floating Solution Helicopter Solution Platform Solutions Selected Services Offshore Offshore Turnkey Service Offshore Training Fuel Jack-up Waste Handling

SWT-6.0 is designed for optimized service and safety Improved safe work environment Fewer mechanical parts Gearbox removed Maintenance free hydraulic fittings Less bolt tensioning needs All components can be transferred with helicopter Training and repair concept developed during design process Internal and external crane possibilities The introduction of the SWT-6.0 will impact and change several fundamental procedures for performing maintenance of a wind turbine

Basic Training Siemens training courses are exclusively offered at Siemens Training Centers in locations Newcastle (UK) Brande (Denmark) Training Catalogue Safety Training WTG Specific training Technical Training Siemens Rescue Tower TM Houston (US) Bremen (Germany) Shanghai (China) Page 26

I am safety. - Zero Harm We never compromise on safety We will make safety personal As a world leader in the wind industry, we strive for excellence, no matter what we do! First and foremost, we insist on doing it safely. Every thing we do in regards to safety, is included in our I am safety. program, aiming to achieve a true Zero Harm culture. Zero Harm means for us: No accidents or incidents and no work related illness!