Gamesa Offshore. Cutting edge technology solutions. G MW Offshore G MW Offshore. Reliability and Optimal CoE

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1 Gamesa Offshore Cutting edge technology solutions G MW Offshore G MW Offshore Reliability and Optimal CoE

2 We are ready INDEX p. 4 p. 6 p. 8 p. 9 p. 10 Superior reliability for offshore sites. Validated innovative technologies providing high reliability. Validation plan. Maintenance. Product characteristics. Gamesa, a global leader in wind energy technology, will now play a significant role in the offshore wind market. G MW Offshore and G MW Offshore wind turbines are based on proven multi-mw Technology. This state-of-the-art in wind energy was already validated in developing Gamesa s 5.0 MW platform, of which multiple units are already performing beyond expectations. Gamesa Offshore wind turbines are equipped with rotors of 128 m and 132 m and benefit from a modular and redundant design enabling partial load operations, achieving superior reliability and maximizing energy production. G MW Offshore prototype commissioning has been carried out during Summer This wind turbine is commercially available and has obtained the Certificate in early 2014, as scheduled. G MW Offshore is also commercially available and Certificate is expected to be obtained in

3 Offshore technology solutions > Superior reliability for offshore sites Superior reliability for offshore sites High reliability Experience driving profitability 4 5 Gamesa Offshore wind turbines have been designed to Gamesa has installed more than 28 GW in all types of adapt perfectly to the conditions of any offshore site. These environments all over the world and leverages a unique conditions can be highly variable and sometimes extreme knowledge base in its activities. Gamesa has integrated its due to adverse weather and the harsh marine environment, more than two decades of experience in the development, which makes access to the wind farm difficult. The manufacture, installation and maintenance of wind advanced technology utilized in the Gamesa Offshore turbines in its latest generation of state-of-the-art offshore turbines assures high reliability, boosts energy production, wind technology. reduces maintenance, minimizes downtime, and ultimately maximizes the profitability of each project. The Gamesa Offshore wind turbines combine breakthrough innovation with validated and reliable technologies to Reduced Maintenance deliver competitive energy costs and optimal profitability throughout the entire lifecycle of the wind farm. The G MW Offshore and the G MW Offshore are designed to increase the time intervals between planned maintenance visits and to minimize the instances of unplanned maintenance. Gamesa ensures this through manifold proven means, including comprehensive testing and validation of mechanical and electrical systems, the modular design and the use of advanced predictive/ diagnostic systems. In addition, the Gamesa FlexiFit self mount add-on crane, can make the logistics and maintenance at offshore sites easier, faster and less costly by avoiding the need for specialty vessels and high tonnage cranes. Gamesa own wind expertise has been complemented specifically for the harsh marine environment through cross-sector collaboration: the Gamesa Offshore wind turbines have been developed with experienced, renowned leaders from the naval industry meeting defense-level standards of reliability. This collaboration addresses some of the market s main concerns, such as cost-efficient civil engineering infrastructures, wind turbine reliability, low maintenance needs and reduced energy costs.

4 Offshore technology solutions > Validated innovative technologies providing high reliability Validated innovative technologies providing high reliability Gamesa GridMate Gamesa FlexiFit 6 7 The Gamesa Gridmate is a redundant electrical solution based on Gamesa s self-mounting transportable add-on crane attaches directly to the a permanent magnet synchronous generator with full converter nacelle. Gamesa FlexiFit facilitates the assembly and disassembly of major technology. The system is designed with four parallel modules which components of the nacelle: hub, gearbox, generator, transformer, converter allow for partial load operation in the event any individual module modules and heat exchanger, reducing the need for expensive vessels and disconnects. Gamesa GridMate permits optimal operation, by high-tonnage cranes. Gamesa FlexiFit can provide greater flexibility inservice meeting the most demanding grid connection requirements. operations offshore by simplifying installation and maintenance tasks. Gamesa CompacTrain Gamesa MultiSmart Gamesa s multivariable control system collects operational data to continuously regulate the pitch of each individual aerodynamic blade, minimizing vibration and reducing loads up to 30%. Gamesa MultiSmart incorporates proven technologies that enhance operational efficiency and maximize energy production. Gamesa CompacTrain combines the main shaft and a two-stage gearbox into an integrated one-piece drive that simplifies alignment, improves reliability by reducing the number of parts and avoids the use of high speed bearings. Gamesa CompacTrain has been fully tested and validated on Gamesa s 5.0 MW platform. The preloaded bearing housing reduces loads which, in turn, reduces mechanical stress and minimizes maintenance tasks. This solution is considered to be best-in-class, according to the sector s leading independent engineers.

5 Offshore technology solutions > Validation plan Offshore technology solutions > Maintenance Validation of the Gamesa Offshore technologies has enabled to achieve the reliability levels found in machines that have operated for several years. Validation plan Maintenance Validation of the Gamesa Offshore technologies leverages 8 an exhaustive program of testing and validation already 9 done on Gamesa s proven 5.0 MW platform. Gamesa s validation program included: More than 600 tests on the turbine components at 100 accredited laboratories in the United States, Japan and Europe. More than 190 functional and/or integration tests at the most qualified international technology centers that specialize in applied research and development of renewable energy technologies. More than 300,000 hours of validation and testing to ensure that the G MW Offshore and G MW Offshore perform consistently and reliably from day one. This extensive validation program used controlled environments to test every system and component in order to simulate real, full-scale operating conditions, in addition to field-testing, with the first onshore prototype from the Gamesa 5.0 MW platform operating successfully since May Final field testing to allow validation of marine-specific developments is being undertaken on the G MW Offshore prototype, commissioned in Summer One of the key objectives in the design of the Gamesa Offshore wind turbines have been to minimize downtime and simplify maintenance tasks that can be particularly complex and costly in offshore environments. Several of Gamesa s technological innovations support this goal: The Gamesa SMP-12. This was developed by performing an extensive analysis of the wind turbine fleet and by determining what essential attributes were needed as part of a quality predictive maintenance system. The SMP-12 can provide early detection of potential wear or faults in the principal components of wind turbines. This system reduces the need for major corrective measures, increases the machine s availability and working life and integrates with Gamesa s other control systems. Gamesa WindNet, our newest generation SCADA system, features modular architecture that allows remote, realtime operation and monitoring of wind turbines. RCM (Reliability Centered Maintenance): Optimized maintenance processes combined with continuous improvements reduce the time devoted to preventive maintenance. The modular design makes corrective maintenance work on large turbine components easier to perform. Gamesa FlexiFit : the transportable add-on crane that attaches directly to the nacelle facilitates the replacement of parts in the field reducing the need for expensive vessels and high-tonnage cranes. Innovative technology, modular design and Gamesa FlexiFit reduce and simplify maintenance.

6 Modular design with integrated systems redundancies delivers continuous reliability and maximum energy production ROTOR GEAR BOX ROTOR 132 G MW Offshore G MW Offshore GEAR BOX Diameter Swept area Class 128 m 12,868 m 2 IB Ratio Two planetary stages 1: Diameter Swept area Class 132 m 13,685 m 2 S Ratio Two planetary stages 1: BLADES GENERATOR BLADES GENERATOR Number of blades Length Material TOWER Height m Organic matrix composite reinforced with fiberglass or carbon fiber One-piece Steel m and site specific Nominal power Voltage Frequency Protection class Rotation speed Power factor Synchronous with permanent magnets, having four independent modules in parallel 5,000 kw 690 VAC Hz IP rpm 0.9 CAP 0.9 IND* Number of blades Length Material TOWER Height m Organic matrix composite reinforced with fiberglass or carbon fiber One-piece Steel Site specific Nominal power Voltage Frequency Protection class Rotation speed Power factor Synchronous with permanent magnets, having four independent modules in parallel 5,000 kw 690 VAC Hz IP rpm 0.9 CAP 0.9 IND* * Power factor at output terminals of the wind turbine on the low voltage side before entering the transformer, at the rated grid voltage. * Power factor at output terminals of the wind turbine on the low voltage side before entering the transformer, at the rated grid voltage.

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