NO. 17 ı APRIL 2004 NEWSLETTER FROM WINDPOWERUPDATE

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1 NO. 17 ı APRIL 2004 NEWSLETTER FROM Germany 2,50 5 Austria 2,70 5 Switzerland 4,90 sfr WINDPOWERUPDATE NORDEX JAPAN: COLOMBIA: ENGINEERING: 8 N60 with On the way to 90-Meter-Market 60 Hz a Wind-Power El Dorado PAGE 8 PAGE 24 PAGE 26

2 Contents Background Technology Restructuring bearing fruit New Orientation for our Customers too 4 Another record year in 2003 Wind Power expanding more and more quickly 5 Interview with Thorsten Herdan, managing director of VDMA Power Systems Association 6 Did you know that... 7 Dr. Eberhard Voß, technical manager at Nordex AG: Germany is set to become a 90-Meter-Market in Artifical worlds ensuring optimum energy yield: Real-time Simulations heightening the Quality of Nordex Control 2 11 Carsten Pedersen, COO Sales of Nordex AG: Does Size matter? The Potential of large Turbines 12 Service Comprehensive, expert one-stop service: The Nordex Service Suite 14 Europe Asia South America Worldwide Nordex reaching new heights in non-coastal regions First N80 Wind Farm on 100-Meter Steel Tube Towers 16 Renewables in the mindland e.disnatur orders first German N90 Wind Farm 18 Vive la France Nordex again No. 1 in France in Another nearshore site for the N80 Siemens Nederland orders nine Multi-Megawatt Turbines 20 Irish Spring with wind power Nordex increases Number of Megawatt Turbines on the Green Island 21 Scotland Twenty N80s generating clean Energy in Scotland 22 High yield wind turbines for Portugal Another Success for the Nordex N90 23 Japan Reliable Turbines for a reliable Partner 24 From theory to application Site Training for the Qingdao Project 25 Between cacti and the Caribbean Colombia set to become a Wind-Power El Dorado 26 Worldwide Installations 27 EUROPE N90 on success course P AGE 8,16,21 SOUTH AMERICA Wind energy in the Caribbean P AGE 22 News Nordex successfully recertified 27 WINDPOWERUPDATE is published by Nordex AG, Bornbarch 2, Norderstedt, Germany Tel: , Fax: Editorial office: Marketing & PR Department Layout: Heuer&Sachse, Hamburg, Germany Edition no. 17 Issues: Cover photo: Erection of a N80 2 WINDPOWERUPDATE ı Contents /Editorial

3 Editorial Dear readers, the words Fresh wind for better performance are a particularly apt motto for this issue of Windpower Update. This is because with our restructuring activities we are laying the foundations for improving our economic clout not least of all to offer you even better performance. This includes concentrating on selected international markets, focusing on high-output turbines and improving our internal processes so that we can meet your needs more quickly and efficiently. Our most recent success was achieving ISO 9001 recertification in March. However, a glance at our development department should be enough to tell you that with Nordex you are headed in the right direction. We have already added countless detail enhancements to the N80 and N90 turbines to improve quality and efficiency. Certificates for the power curve, noise levels and grid measurements have been received for the N90. In addition, the 80 and 100 meter tube towers as well as the 105 meter lattice tower have been certified. We are convinced that looking ahead Europe will be a 90-meter-market, with the N90 proving to the preferred wind turbine. As always, we also report on our latest projects including many N90 wind farms. This time, the focus is on recent projects in the UK, the Netherlands, Portugal, Colombia and Japan. This should not come as any surprise as exports accounted for an impressive 60 % of our business last year. I wish you pleasant reading. Carsten Pedersen Nordex Product- Program Type Capacity Regulation Markets Nordex N kw Stall Asia Nordex N kw Stall Asia Nordex N60, N kw Stall Asia, Europe, Latin America Nordex S70, S kw Pitch Europe Nordex N kw Pitch Europe, Asia Nordex N kw Pitch Europe No. 17 ı April

4 Restructuring bearing fruit New Orientation for our Customers too By the end of March 2004, Nordex had completed roughly 65 % of its restructuring measures in line with the planned schedule. The aim is to improve the Company s bottom line substantially this year and to return to profit-making territory next year. t s all very well for Nordex to want to improve Iits bottom line by around EUR 72 million by next year, but what s in it for me, some customers may be asking. Given the over 1,600 individual measures being taken, the answer is not easy. The main elements of the restructuring program involve concentrating on attractive core markets, strengthening the Company s technological position, optimizing business processes, implementing radical cost cuts and improving liquidity. Professional customers call for top service, something they cannot expect to receive from a jack of all trades. That s why we are focusing and specifically extending our competence, explains Thomas Richterich, spokesman for the Management Board. One example of this is France. After several years of intensive work in this market, Nordex is now considered to be one of the most experienced operators in the sector. Further resources are to be created and made available to customers particularly via co-development in France. Nordex is pursuing similar strategies in the UK, Central Europe and the Far East as well. At the same time, it is withdrawing from broadbased operations in other markets such as the United States. Engineering activities are also being concentrated. It is almost impossible to maintain an extensive range of different models and optimize its availability. With this in mind, Nordex is now focusing on its existing high-output turbines. The preliminary results bear out the wisdom of this strategy. After the launch of the October package, for example, the availability of the N80 turbines has been improved by an average of around 8 %. A further key component of the program involves optimizing business processes. Says Richterich: In the past, we had clear weaknesses here. The delivery of individual projects in line specifications required incalculably high expense. The customer rarely realized this as the finished product matched its expectations. The new process will not only save money for Nordex but also offer customers advantages in the form of the best possible transparency in all phases of the project in tandem with continued high reliability. The radical cost-cutting efforts will not be to the detriment of the customers. By standardizing products and improving production processes, Nordex will be optimizing quality and cost structures. Moreover, it has streamlined its corporate structure, with production and remote monitoring now centralized in Rostock, while local administrative functions have been pooled. Says Richterich: In this way, we will be able to define responsibilities more clearly in line with the call for one face to the customer. Not least of all, Nordex hopes to be able to improve its liquidity. In addition to the constructive support of our banks, it is crucial to put an end to the liquidity outflow of the past, Richterich explains. Since the 4th quarter of last fiscal year, Nordex has been able to achieve this target with positive free cash flow. Even though it may dip into the red again in individual quarters, the Company is confident of remaining cash flow positive for the year as a whole. Says Richterich: The times in which we could afford to acquire market share at the expense of liquidity are over. We must now strengthen our capital base again to facilitate project financing. 4 WINDPOWERUPDATE ı Background

5 Another record year in 2003 Wind Power expanding more and more quickly When discussing last year s performance, market analysts agree on one thing: Global demand for wind turbines has regained momentum. The growth in the construction of new turbines rose from 6 % in 2002 to 15 % last year. According to BTM surveys, new output of 8,344 megawatts was installed. Even though the European Wind Energy Association EWEA calculates a more modest figure of 8,133 MW for 2003, it is clear that more turbines were assembled in 2003 than in any other year. This trend is being spearheaded by large turbines in particular, with average output per turbine in Germany coming to 1,650 kw (previous year: 1,400 kw). This figure came to almost 2,000 MW in Denmark thanks to the large number of offshore installations. However, new markets such as the United Kingdom also rose to this level. Mean capacity per turbine came to 1,773 kw in this market. This trend bears out the wisdom of Nordex s strategy of concentrating on high-output turbines and offering its customers an optimum blend of products in this area for weak and strong-wind applications as well as a variety of different tower heights. However, not all markets expanded in Where as the volume of new installations increased almost four-fold in the United States and rose by 90 % in Asia, the European market, for example, contracted by around 10 %. This was particularly due to the decline in the mature markets of Germany (down 573 MW), Denmark (down 312 MW) and Spain (down 116 MW). Yet, where there is shadow, there is also light. Thus, double and triple-digit growth rates were achieved in markets such as Austria, the United Kingdom, Ireland, France and Portugal. However, the growth achieved in the young European markets was not sufficient to offset the overall shrinkage. This temporary blip in European growth also took its toll on Nordex especially as the company simultaneously underwent fundamental re-alignment. As a result, installed new capacity declined to around 320 MW, equivalent to around 4 % of the global market on the basis of the BTM figures. Part of our strategic re-alignment is to concentrate on key target regions. For example, in the absence of any partners, we have withdrawn from broad-based activities in the United States and will only be responding to invitations for tenders on a selective basis in that market. What is more important in my view is for us to gain successes in our core markets, explains Carsten Pedersen, COO Sales and Marketing. Here, Nordex has an impressive track record: According to figures released by the national associations, it is amongst the top four in the United Kingdom (30 %), Ireland (40 %), France (36 %), China (17 %), Portugal (12 %) and Japan (7 %). Looking ahead over the next five years, the outlook for the wind power sector is upbeat, with BTM forecasting average annual growth of around 10 % between 2004 and All told, this translates into an increase in capacity of 137 % or 55,300 MW (December 31, 2003: 40,301 MW). Roughly two thirds of this capacity will be built in Europe. Alongside the established markets of Germany and Spain, impetus will particularly come from the growth markets of the United Kingdom and France. However, experts assume that the growth motor will not be fired up until 2005 primarily as a result of trends in the United States. Even if the (now expired) PTC system is renewed in the near future, we still expect demand to remain muted in 2004, JPMorgan writes. All experts project a downswing in Germany. Explains Pedersen: Future trends hinge decisively on the form which the amended Renewable Energies Act ultimately takes. At this stage, we can assume that the new offshore and repowering segments will gain steam towards the end of the decade. For the time being, it is up to politicians to ensure a proper transition without any technological disruptions MW Source: BTM Consult ApS- March 2004 Europe USA Asia Rest of World Existing No. 17 ı April

6 Interview with Thorsten Herdan Global Export will make up in new Installations in Ger The Windpower Update editorial office under discussion with Thorsten Herdan, managing director of VDMA Power Systems Association. For the first time since the nineties, the number of new wind turbine installations in Germany is declining. In 2003, roughly 18 % less capacity was installed than in the previous year. There are many different reasons for this. Experts consider one key factor to be the absence of any long-term basis for reliable planning as a result of the debate on the Renewable Energies Act. As there was Thorsten Herdan, managing director no parliamentary majority for a of VDMA Power Systems Assosiation. change in the support system, the bill to reform the Renewable Energies Act shows all the signs of a political compromise. However, it is not free of difficulties. In this respect, VDMA is one of the key intermediaries between politicians and the interests of the industry. An interview with Thorsten Herdan, managing director of VDMA Power Systems Association, on the situation in March Mr. Herdan, you were one of the critics of the so-called 65 % rule, which would have excluded weaker wind locations from statutory support. Following the meeting of the environmental affairs committee, this proposal now appears to have been discarded. Is everything now OK? No, further modifications are necessary. It is important that the bill should create an incentive for boosting the efficiency of the turbines rather than the locations. Accordingly, with the decision to discard the 65 % rule a bad idea has been replaced by one which is only marginally better. The correction which has now been adopted to the calculation factor for the period in which a surcharge is paid on top of the basic fee is not an ideal solution. The onshore market in Germany is increasingly losing importance. Do you see any replacement for it? After all, support for offshore turbines as well as repowering is to be improved. The fact of the matter is that onshore projects in Germany will be on the decline. This is also borne out by the 2004 Wind Power Study recently released by DEWI. Neither offshore nor repowering business will be able to completely make up for this contraction in Germany in the short to medium term. We do not expect to see any noticeable German offshore installations until the end of this decade. A similar situation also applies to the new business segment of repowering, i. e. the replacement of old turbines by new far more efficient ones. Only by opening up global export markets will it be possible to make up for the decline in new installations in Germany. However, I would like to make a special point of mentioning service business in Germany. With over 15,000 turbines in operation, companies with intelligent service models are able to tap an excellent aftersales market. 6 WINDPOWERUPDATE ı Interview

7 for the Decline many? Given the decline in new business in Germany, you have called on politicians to create export initiatives. Are you satisfied with the activities to date? Most definitely not. The people responsible for formulating the export initiative do not listen to industry closely enough. Too much money is being wasted on inefficient activities such as countless fair stands. We are talking to members of parliament to create a more efficient export initiative. The in 2003, the worldwide wind turbine installations export initiative is too important to allow it to be discredited by reached 40,300 MW generating more than 82.0 TWh? uncoordinated and ineffective activities. Industry is in the best (BTM World Market Update 2003) position to define the key export markets and the most efficient activities for these markets. the energy used to produce, maintain, dismantle and scrap the wind turbine is paid back in 2 to 3 months In connection with emission trading, voices have arisen in by the energy produced by the wind turbine during Berlin again calling for a fundamental change in the system of its 20 years of operation? (www.windpower.dk) supporting regenerative energies over the next few years. Do you see any majority for such calls? the production of one kwh of electricity using wind Yes, if only the goal of reducing CO 2 output is considered, energy prevents the emission of 0.8 kg of carbon because this means that all instruments must be reviewed. No, dioxide? if one of the aims of the Regenerative Energies Act remains to pursue industrial and innovation policies. This is not the purpose of emission trading. The March 8, 2004 hearing by the environmental affairs committee on the reform of the Renewable Energies Act and the ensuing political debates have made it clear that there is a cross-partisan political majority which also views the Renewable Energies Act as an instrument for successful industrial and innovation policy. Did you know that... No. 17 ı April

8 Nordex Engineering Also Germany is set to become a 90-Meter-Market in 2004 Interview with Dr. Eberhard Voß, technical manager at Nordex AG. The N80 is Nordex's flagship. There is growing demand for this turbine outside Germany in particular. What do you think are the reasons for its success in these markets? When we developed the N80, we Dr. Eberhard Voß, technical manager had export markets at Nordex AG. in mind from the outset. The turbine is designed for strong-wind locations. In countries such as the UK, France and Scandinavia in particular, average wind speeds tend to be higher than in Germany. What is more, energy companies are also involved in wind power in countries outside Germany. As they require powerful units, the 2.5 MW wind turbines fit the bill perfectly. By contrast, strong-wind locations are rare in Germany and there is a growing tendency to use non-coastal locations. For this reason, we launched the Nordex N90 with an output of 2.3 MW in 2002 specially for regions with medium wind speeds. The underlying design is based on the proven N80. With its 90 meter rotor, the turbine has a respectable sweep, achieving maximum installed electricity output in non-coastal locations measured in terms of specific space requirements. This will make them very attractive for the German market as well over the next few years in particular. As of 2004, Germany will be a 90-meter-market, something which can already be seen in customer response. There is particularly strong demand for turbines with output of more than 2 MW, and with our 2.3 MW model we have a particularly attractive offering. The most recent example is the first German N90 wind farm which we are currently building for e.disnatur in Losten in Mecklenburg. To what aspects did Nordex attach particular importance when it launched the N80 and the N90? When we developed the N80 and the N90, we attached importance to reliability. First of all, we worked on prototypes and then gradually moved to the zero series. With turbines of this magnitude, our philosophy is to avoid making technical changes on a large scale to operative turbines in the field. Today, Nordex boasts the greatest experience in the 90 meter rotor segment of the market. All the necessary certificates on noise, power curves and grid compatibility have been obtained for the N90. Similarly, we have completed type testing and certification for the turbines on 80 and 100 meter tube towers as well as on our own 105 meter lattice mast. International reports are currently being completed. As well as this, we have optimized many of the details of the two turbines on the basis of the experience which we have gained with our turbines at extreme locations. One example is Norway. At our N80 wind farm in Havogavlen, mean wind speeds of 12 m/s are measured, peaking at up to 60 m/s. Strong changes in wind directions, offshore-like conditions as a result of the salt-water content of the air as well as a terrain which is almost inaccessible for half of the year make extreme demands of our equipment and service. Here, we have gathered extensive operating experience within a short space of time which has been incorporated in the multi-megawatt turbines in the form of technical improvements. Can you explain these technical enhancements in detail? Among other things, we have perfected the electric pitch system, the yaw system, the operations, electrical and sensory systems and the engineering of the N80 and the N90. These enhancements were completed in close consultation with Allianz Versicherungs AG, Flender Service, 8 WINDPOWERUPDATE ı Technology

9 Germanischer Lloyd and TÜV Nord. When we revised the pitch system, we particularly paid attention to improvements to the control system. An updated handshake between the Nordex Control 2 management software and the pitch converter as well as the incorporation of a sleep mode for the converter minimize wear and tear and thus improve the system's durability. The use of a temperature-monitored heating system for the battery recharging system as standard helps to ensure optimum monitoring of charge rates and hence improve operative reliability. The yaw system responsible for ensuring that the turbines are aligned correctly to the wind direction includes an improved link between the hydraulic and electrical system to ensure enhanced alignment. Other improvements include the integration of the transformer in the tower, the standard inclusion of lift-type access and a service box in the nacelle. Additional safety and access areas within the nacelle heighten serviceability and security. As well as this, customers can request central lubrication for the blade ring. This also reduces service requirements and provides improved corrosion protection. To what extent have you already implemented the EON rules which took effect in August 2003? Today, we are one of the few manufacturers to supply both a 2.5 MW and a 2.3 MW turbine which complies with the EON rules. We have modified the error-prone turbine components such as azimuth, pitch, generator/frequency converter and lowvoltage switching technology to allow for new capacity and adopted the control systems in accordance with the grid-connection rules. The purpose of the EON rules, which, incidentally, are also compulsory in some other European countries, is to operate wind turbines in the same way as conventional power plants particularly with respect to output requirements, output factor specifications and turbine response in the event of grid errors. In this connection, we have also enhanced the Nordex Control 2 visualization and control software. The current release 11 of Nordex Control 2 permits turbines in a wind farm to be operated at reduced output levels in accordance with the parameters defined by the electricity company. Similarly, wind turbines can be used as backups in the event of grid disruptions. No. 17 ı April

10 As far as the operator is concerned, everything stands and falls with turbine availability. The management and control of the entire turbine and wind farm play a crucial role in this respect. What is Nordex's answer to this? The Nordex Control 2 system handles the main processes such as the management of technical processes like starting, adding, stopping, braking, error management, yawing and ancillary processes such as lubrication, cooling and heating. The most fundamental task is speed and output control. Nordex Control 2 is also used for operating and observation purposes as well as for recording, storing and archiving production data, events, alarms and trends. It also handles remote monitoring and alert functions. Thanks to its modular structure, the system can be extended at any time and is thus particularly flexible. Nordex Control 2 can be used independently of licenses and enables web-based access via well-known and new standards such as HTML, SMTP and XML. This cannot be matched by any other producer at the moment. From the outset, we attached particular importance to creating an open and consistent solution. At the same time, we have slimmed down the system hardware. In this way, we have been able to boost turbine availability. Talks with customers, our own findings as well as our service experience have provided us with a valuable source of ideas for optimizing the system, particularly with respect to the relevance of the data displayed and the ergonomics of the system. Thus, some customers have no need for certain types of data which we had originally intended to display, e. g. the calculation and display of average daily output per turbine in the reports. Other customers, however, seek more detailed information such as the ongoing live display of the daily output of the turbines in certain time intervals. With all these suggestions coming from customers and our service department, we are faced with a tight-rope walk between individual solutions and standards. Naturally enough, our goal is always to simplify the use of the system. At the same time, Nordex Control 2 must also reflect customers' preferences, e. g. it must be possible to generate certain data protocols, display data in compressed form if necessary and generally speed up the usability of the system here and there. We have incorporated the suggestions made by our customers which are also of benefit to other customers. In this way, we are convinced that Nordex Control 2 has gone a step closer towards meeting customers' wishes and will do so to an even greater extent in the future. Some of these changes involve quite substantial modifications to the turbine design and control system. How will you ensure that future customers achieve a fully developed product? All the internally developed software components of our turbines regularly undergo process simulation at our own Nordex software laboratory to ensure that they function properly. Using the mathematical data of the components, we perform comparisons of actual and target figures on an ongoing basis. Only when the component software operates properly, do we take it out onto the field for further testing. As well as this, we are performing an FMEA (failure modes and effects analysis) at Nordex on the turbine components, their modifications and the new solutions implemented in our equipment. Using what-if scenarios, each component is scrutinized to determine its response in a non-standard situation, e. g. in the event of a power failure. Potential errors and their impact are examined and evaluated in order to improve the quality, safety and reliability of the measures taken before they are applied out in the field. After the safety analysis and simulation under laboratory conditions have been completed, the new solutions are first tested on our N80 turbine in Neubukow. They are then implemented in the N90 at Postlow operated by our customer Enetrag, in the N90 at the Risø wind farm in Høvsøre in Denmark and finally our Kattegatt offshore turbine. This step-by-step approach using four prototypes in the field is applied with all modifications and simultaneously ensures availability of the four turbines. Only after the new solutions have proven themselves here they are implemented on a series level. 10 WINDPOWERUPDATE ı Technology

11 Artificial worlds ensuring optimum energy yield: Real-time Simulations heightening the Quality of Nordex Control 2 Turbine-management software and wind turbine response are being tested under real conditions in the laboratory. The automation system plays a crucial role in the management of wind turbines, ensuring problem-free operations. If the complex software functions of the turbine-management system are not programmed properly, this may result in delays in putting the turbines into operation or generate unwanted error messages during the productive period. In a next step, Nordex will additionally be using the software simulation tool to examine mathematical turbine models for the increasingly important wind farm controlling and management systems. For this purpose, entire virtual wind farms will be developed to simulate grid connections for multiple wind turbines under real-time conditions. Nordex utilizes real-time simulations to identify and eliminate potential programming errors in the automation system prior to field deployment of the turbine. In this way, it is possible to test the Nordex Control 2 controlling software as well as wind turbine response under real conditions in the laboratory. By using real-time simulations, we can immerse ourselves in a wind world generated by the computer to examine the reallife response of a virtual turbine across the entire wind spectrum at speeds of between 2 and 30 meters per second. This allows us to identify and completely remove potential errors in good time without placing people or the turbine at risk. The result is high-quality turbine-management software, explains Thomas Schubert head of operations management and electrical engineering at Nordex. The Nordex Control 2 controlling software is particularly used with the multi-megawatt Nordex N80 and N90 turbines. Today, all turbines of this type are fitted with the new, qualitychecked system. At the same time, Nordex has been able to implement an automation software system for wind turbines which creates audit trails. To make sure that the simulation really produces accurate results, Nordex has incorporated mathematical and physical algorithms of the main components to create a virtual image of the turbines. This simulation data is linked to the Phoenix Contact used in real operations and examined on the basis of genuine weather data as well as extreme artificial conditions. Looking ahead, Nordex plans to offer training for its own service staff as well as for operators. At the Service Academy, operators will be able to modify wind parameters in the simulation model at the click of the mouse and track turbine response. In this way, it will be possible for future users to familiarize themselves with the technical parameters and response of the turbine, practice using the system and gain experience with it. Accordingly, this will enable operating staff to practice particularly critical maneuvers as many times as is required to handle wind speeds and turbine response outside the normal range free of any risk. No. 17 ı April

12 Wind energy on- and offshore Does Size matter? The Potential of huge Wind Turbines Interview with Carsten Pedersen, COO Sales of Nordex AG. Will Nordex be using the N90 as an offshore version following the testing in Frederikshavn or is a larger turbine being planned? The world s largest offshore wind farms off the coasts of Denmark and the UK were fitted with turbines with an output of MW. With its N80/N90 products, Nordex offers proven largescale turbines for this offshore market. The Baltic 1 pilot project off the German Baltic coast is also to be equipped with these turbines. However, it is clear that this turbine is too small for some of the projects being planned today. Deep-sea wind farms will require turbines with an output of 5 MW. Still, it will take another few years before such projects become commercially viable. Moreover, we want to take a new approach as we are convinced that conventional concepts are not practicable in this turbine class. However, we will initially only be testing this new approach to central system groups in output classes which Nordex already masters. This means that our 2.5 MW series will remain the starting point for forays into the 4 6 MW class. max. installation height midland Advantage: 120 N90/G105 Ø 90 m higher Ø windspeed (+ 1 m towerheight ~ = 1% kwh/year) 25% lower turbulences (higher energy yield + lower forces) MW/R90 Ø 120 m WINDPOWERUPDATE ı Technology

13 What potential do these large turbines have in the midland? H (m) Height advantages onshore vs. offshore Little. These turbines are clearly only viable for future deep-sea offshore projects but not for onshore applications. There are three main reasons for this: In terms of logistics, we are already coming up against our limits with turbines in the 100 meter class. For instance, it is almost impossible to transport various core components such as the rotor blades on road in a single piece. Secondly, we must comply with different noise emission rules on land. As a result, the rotation speed must be lowered substantially, something which puts a cap on the yield. And, ultimately, a 5 MW turbine with a rotor diameter of more than 120 meter would always be partially immersed in turbulent and low-wind zones as the maximum construction height for onshore turbines is 150 meters (see chart), resulting in relatively low yields and high strain as a result of the turbulence Onshore installations (German midland) Offshore 0 4,0 4,5 5,0 5,5 6,0 6,5 7,0 7,5 8,0 v (m/s) Installation of the N90 Offshore in Frederikshavn. No. 17 ı April

14 Comprehensive, expert one-stop service: The Nordex Service Suite Three service-packages to provide complete peace of mind over your investment. emand for the Nordex Service Suite packages introduced in April 2003 has exceeded D expectations, says Theo Becker, managing director of Nordex and responsible for the global service. In Germany alone, Nordex has signed an increasing number of Extended and Premium service and maintenance contracts for the new megawatt turbines. There has also been heightened demand outside Germany for the Premium package, which was originally only designed for the local market. Nordex is offering the Premium package in connection with over 130 N80/N90 turbines for which it has submitted bids in other European countries. Private and listed investors, banks and utilities from France and Belgium, for example, are increasingly making use of the benefits offered by the Premium service. The reason: Buying a wind turbine is an investment in the future. For the next 20 years it should supply clean energy in an efficient manner. Here the smooth, interruption-free operation of the turbine is of crucial importance. After all, the purchase costs for a wind park often running into millions have to pay for themselves. Nordex customers obtain optimal and dependable yields, benefit in terms of financing and reduce insurance and provisioning costs, Nordex offers three different options for the tailor-made servicing of all wind turbines. The Nordex Basic Service offers clearly defined basic service at a fixed price specific to each turbine and is especially designed for all wind turbines with a rated output of up to 1,000 kw. The Nordex Extended Service offers all the advantages of Nordex Basic Service, with an additional focus on an availability guarantee for wind parks and individual machines on the basis of compounded type-specific annual yields. Nordex Extended Service is available for all wind turbines with a rated output of 1,300 kw and more. The Nordex Premium Service is the full-service package for the wind turbines S70 and S77 as well as N80 and N90. Here the availability guarantee for wind parks or individual machines is based on agreed average expected annual yields. The Nordex Extended Service is also available with the complete technical management. This means that customers have some key decisions to make when they take possession of their wind parks: service contracts have to be concluded, any damage incurred, with the resulting downtimes, have to be safeguarded against. In order to ensure that 14 WINDPOWERUPDATE ı Service

15 The Nordex Service Suite at a glance: Servicepackage Services included Lifetime Valid for Reporting Price Nordex Basic Service Service/maintenance every 6 months: complete check of all components & tower torque check of screws oil-level check years Turbine types: N27/N29 N43/N50 N52/N54 S46 incl. existing turbines Event-related: operating reports per turbine on inspections, repairs, maintenance Turbine-specific fixed prices (price on request) Price development linked to development of wage and material costs (service proviso). oil samples necessary oil change and oil (min. every 3 years) any lubrication services required brake check Including repairs for up to EUR 200 per annum (net) claimed can be transferred every year. 24-h remote monitoring Nordex Extended Service Service/maintenance as for "Basic" service package Including turbine-specific repairs for between EUR 500 2,000 per annum (net) Repair allowances not claimed can be transferred every year. Availability guarantee of 97 % (for wind parks) and 96% (for individual turbines) on the basis of type-specific average annual yields 24-h remote monitoring years Turbine types: N60/N62, S70/S77, N80/N90 incl. existing turbines Monthly: to be determined from the turbine control system: yield statistics for turbines and park availability statistics fault statistics power curve/wind data Event-related: on-site inspection reports fault messages, fault correction reports maintenance/service reports For prices see "Basic" service package expertises repair, care and maintenance reports evaluation of Condition Monitoring (if installed) Nordex Premium Service Service/maintenance as for "Basic" service package Including repairs, except for damage resulting from force majeure and unauthorized interventions by third parties Availability guarantee of 97 % (for wind parks) and 96 % (for individual turbines) on the basis of agreed expected average annual yields 24-h remote monitoring Optional: Technical management complete operation of the turbine optimization of the turbine's yield situation monitoring of the infrastructure in the wind park years Turbine types: S70/S77, N80/N90 only new machines Prerequisite: Nordex Condition Monitoring System See Reporting for "Extended" service package Annually: summary of monthly reports Fixed-price share: on the basis of agreed expected annual yields (net approx. 1.3 eurocents per kwh). Price development linked to development of wage and material costs (service proviso). Variable remuneration share: if the agreed annual yield is actually exceeded, 1.3 eurocents net for each additional kwh of yield fulfillment of technical obligations towards power utility No. 17 ı April

16 Nordex reaching new heights in non-coastal regions First N80 Wind Farm on 100-Meter Steel Tube Towers Logistic challenges overcome by taking to the water. o achieve optimum yields in non-coastal regions, you need plenty of height. That's why T we offer our multi-megawatt turbines on 100-meter high towers, explains Carsten Perdersen, COO Sales and Marketing at Nordex. Only by using such turbines is it possible to recoup the additional costs of the tower relative to the yield achieved. The most recent example is the first N80 wind farm in the German Eifel region comprising 100 meter steel-tube towers. Prior to this, Nordex had been assembling its 2.5 MW turbines on 60 or 80-meter towers. At the Zilsdorf wind farm, the advantages of the higher towers are not difficult to see: At a hub height of 80 meters, the average wind speed is 6.6 m/s. Twenty meters higher it is almost 7 m/s. Over the year as a whole, this translates into a roughly 6% higher yield. Yet, the wind quality also improves the higher you go. Explains Pedersen: In Zilsdorf we were able to remove the rotor sweep from the turbulence zone at this height. Turbulence caused by obstacles on the group is 25 % less between 60 and 140 meters than it is 20 meters lower. What is known as the laminar wind stream results in lower strain on the turbine and longer operating times. Before the turbines were assembled in the Eifel region near Trier, Nordex first had to solve a number of technical challenges resulting from the size of the towers. Four of the six segments are cylindrical, allowing time and cost savings thanks to the use of largely identical flanges. Yet, this resulted in gargantuan dimensions. The bottom-most segment of the tower alone has a diameter of 5.7 meters and weighs 70 tons. This rendered road transport impossible as bridges have a standard clearance of 4.2 meters. This was a question of getting the logistics right, with water transportation proving to be the ideal solution. The towers and blades were shipped from Esbjerg in Denmark to Rotterdam. They were then carried down the River Rhine to Trier. It was necessary to transport the load by road for the final few kilometers to the construction site. Transportation by water takes time but is the ideal solution in the case of large components. This also applies to the costs, says Andreas Petzold, head of logistics at Nordex. In terms of relative daily rates, a ship has a far greater cargo-carrying capacity than a truck. 16 WINDPOWERUPDATE ı Europe

17 1 The 40 meter blades are being loaded on board with the help of a container crane. 3 The towers are loaded on barges in Rotterdam. 4 The towers only just fitted into the 2.5 thousand tons barges. 5 Towers being erected at the Zilsdorf wind farm. 6 Today, the blades rotate in an altitude of 100 meters in the fresh air of the Eifel. No. 17 ı April

18 Renewables in the midland e.disnatur orders first German N90 Wind Farm Five multi-megawatt wind turbines for the Energy Mix project in Losten. o cover a good part of the regional demand T for electricity and heating from domestic energy sources such as the wind, biogas and the sun in a sustainable manner, this was the aim of the Energy Mix project in Losten, near Bad Kleinen in Mecklenburg-West Pomerania. Now this aim is as good as achieved. In e.disnatur, a subsidiary of the east German utility Edis AG, the initiators have found an investor to realize the project. As a first step, e.disnatur ordered a total of five wind turbines of the N90/2300 kw series representing an investment volume of approx. EUR 10 mn. The machines are to produce some 20 mn kilowatt hours of clean electricity per annum starting in By way of comparison: this is equal to the electricity requirements of 5,000 households. Such a high energy yield has been made possible thanks to machines that have been especially optimized for medium wind speeds. Apart from the foundations and roads, a cable line of about 15 kilometres had to be laid to Wismar for the grid connection. The concept in Losten is based on synergies and the combination of different types of use. For this reason, the land between the wind turbines is to put to agricultural use again as soon as possible. The Losten stockbreeding company intends to plant sustainable raw materials, among other products, here, which are to be turned into biogas together with the pig slurry collected and converted into heat and electricity in biogas facilities. According to plans, some 60,000 cubic metres of slurry are to be converted into energy. This amounts to approx. 50 per cent of the slurry produced by around 65,000 animals. However, the Energy Mix goes one step further. In the near future, a photovoltaic demonstration system is to be installed in Bad Kleinen. Installation of the first German N90 wind farm. 18 WINDPOWERUPDATE ı Europe

19 Vive la France Nordex again No.1 in France in 2003 Market share of 38 % in important European market. Nordex has been able to successfully defend its Number 1 position in France for the third year running. Of the new wind power capacity of 90.6 MW installed last year, Nordex contributed around 36 % or 32.6 MW. With a total capacity of 91 MW, Nordex currently holds 38 % of the market. At the end of 2003, 481 turbines were generating 239 MW of clean energy from wind power in France. In spite of what, by European standards, is the small installation base, France is poised to become one of the major markets in Europe over the next few years. What we are experiencing is a rate of development comparable to that witnessed in the German wind power industry ten years ago. Thanks to our very early forays into the French market as well as our own local project-development operations, we have an excellent stepping stone for benefiting from this growth to an above-average extent, says Carsten Pedersen, COO Sales and Marketing at Nordex AG. Compared with Germany or Denmark, the French wind power market is still in its infancy. Whereas installed wind power capacity per capita stands at around 595 watts in Denmark and approximately 170 watts in Germany, the equivalent figure for France is only 4 watts. Given the number of locations with excellent wind conditions, high demand for energy and a well developed infrastructure, France is on the verge of an upswing in wind power. In the Arrête du 8. Juin 2001, the French government created the legal basis for remunerating wind power, thus establishing a solid basis for the reliable planning and budgeting of wind farm projects. ADEME estimates that an installed wind power capacity of 2,000 MW in 2006 would be possible this is equivalent to an eight-fold increase over the current figure. The Bouin wind farm with eight N80/2500 kw turbines. No. 17 ı April

20 Another nearshore site for the N80 Siemens Nederland orders nine Multi- Megawatt Turbines Industrial port of Europoort soon with 22.5 MW wind park. Five N80/2500 kw near Wieringermeer. For the Siemens Nederland N.V. Nordex is to supply and install nine large Nordex N80/2500 kw turbines for the Hartel III wind farm. The special feature of this project: first of all ten smaller turbines with a capacity of 500 kw each, which produced clean energy at this location in the past, have to be dismantled. Siemens Nederland N. V. is responsible for the turnkey realisation of the farm in the industrial port of Europoort near Rotterdam. This involves mainly the grid connection, substation, foundations and road construction. The final customers for the park are the Dutch utility Eneco Milieu B. V. and the developer Hartel B. V. In addition to supplying the turbines, Nordex will also be responsible for servicing the machines in the first five years of operation. The advantage for Nordex: as early as 2002, the company also installed nine N80s and stationed a local service team in the grounds of a neighbouring BP and Chevron Texaco refinery. In February/March 2004 Nordex connected other five N80/2500 kw wind turbines near Wieringermeer to the grid. Today, these turbines are producing clean energy enough to cover the electricity requirements of some 8,000 households. 20 WINDPOWERUPDATE ı Europe

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