more tha years Wind Energy PV Energy Biomass/Biogas Grid Integration

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1 20 n more tha years Wind Energy PV Energy Biomass/Biogas Grid Integration

2 8.2 GROUP Your reliable partner in renewable energy successful now since 1995! A complete network of independent experts has developed nationally as well as internationally within only few years since the foundation of the first 8.2 office in Today, with more than 20,000 technical inspections, over 9,000 MW technical due diligence projects worldwide, and 28 independent locations, the 8.2 GROUP is one of the leading specialists in the various fields of sustainable energy. 130 experts handle a total of 5,000 clients from more than 50 countries offering comprehensive consulting services, technical inspections for wind turbines, PV, biogas plants and electrical grid / grid integration. Furthermore, right from the beginning 8.2 has been working offshore and is involved in nearly all German offshore projects in various fields. Services offered by the 8.2 GROUP are facilitated by the specialist knowledge of the 8.2 GROUP members in subjects such as glass fibre-reinforced composites, vibration analysis, video endoscopy, condition monitoring, rotor blade inspection by rope access technique as well as foundation control. Our active way of knowledge management will be your profit The close cooperation of all 8.2 offices as well as the exchange of experience and information on a regular basis supports a constant transfer of valuable knowledge. Thus, every 8.2 expert is able to access the 8.2 GROUP s complete knowledge which is being improved and updated continuously by additional and regular training programs in our 8.2 Academy. The technical knowledge of the 8.2 experts is always on an up to date level due to their active work in certification bodies, committees, advisory boards and quality initiatives. Moreover, our experts are working actively for the development of norms, basic principles and inspection methods. You as our customer will profit from this unique professional background based on our advanced knowledge and high quality level of work. 2 3

3 Wind Energy Consulting Trust in experience and know-how! Consulting Due to long term experience with wind turbines, the 8.2 team is able to assess technical problems competently and thus to implement your projects perfectly. Our aim is to increase the reliability and availability of your wind turbines as well as to optimize your operational results or energy yield possibilities. Right from the start with the first discussions up to the decommissioning of the turbines after the respective period of operation 8.2 will be your reliable partner with a manifold know-how concerning the erection of turbines, the planning of wind parks, the quality control of turbine manufacturing and the sale of turbines as well as determination of total operating life of a turbine and statement on condition during the whole period of operation. Services» support in contract negotiations with manufacturers, banks, investors» support in sale and service contracts as well as in the purchase of external services (e.g. assessment reports of ground, wind and noise, performance measurement)» support in turbine manufacturing and in planning of wind parks» quality control with regards to manufacturing and sale of wind turbines» construction monitoring» control of technical documents / contractual documents» assessment reports (e.g. court s opinion)» valuation report» due diligence» damage analyses for incurance companies/owners/banks» determination of total operating life of a turbine» independent consultancy within the field of HSE 4 5

4 Wind Energy Lifetime Extension Planning security by site-specific analysis Analysing the Lifetime of a Wind Turbine Operation past Design Life In addition, the results of the simulation can be used to give advice on how to operate a WEC more safely and adjust it to the individual on-site conditions. Abstract The lifetime of a wind turbine is a minimum of 20 years according to IEC [1]. However, differences between the design loads and the actual loads on-site can lead to the possibility of operating the WEC longer than the design life. Using an aero elastic simulation the individual overall lifetime can be calculated per main component. Objectives Each WEC has an individual lifetime which is affected by the on-site wind conditions. Using an analytical approach, the lifetime of each WEC main component can be calculated (Table 1). Consequently, the weak points of a WEC can be determined and the risk of damage caused by fatigue can be reduced. Knowing the overall lifetime serves as a basis for reliable organisational and financial decisions. Also, the individual maintenance plan can be adjusted according to the lifetime of the main components and repairs of critical components can be planned in a long-term schedule. In the regular inspections it is possible to check the weak points, e.g. the rotor blade connection (Table 1), more closely and notice anomalies at an early stage. To extend the lifetime of the wind turbine it is possible to» adjust the operation mode and/or» renew the affected component. Results So far, more than 30 projects show that the simulated WECs can be operated past their design lives (Figure 3). The results lie between 23 and 41 years of overall lifetime for a design life of 20 years each. Applications Different settings for the calculations are imaginable. The simulations can be carried out during the planning process of a wind farm if an advanced planning reliability is needed. In most cases a retrofit or renewal of the weakest component can easily be carried out after a few years of operation. That way it even prolongs the overall lifetime for several years. Moreover, the analysis helps to estimate financial and structural risks when the conditions on-site change e.g. in the case of new WECs built in the direct vicinity of existing WECs. The new wind turbines influence the turbulence on-site and cause a wake effect. This might lead to lower energy yields of the existing wind turbines and even influence the structural safety in a negative way. The analysis offers a direct comparison between the two settings. Component Manufacturer Vestas NEG Micon NEG Micon Enercon Enercon Enercon Enercon Turbine V39 NM NM1000/60 E-40/5.40 E-66/18.70 E-70 E4 E-82 E2 Quantity 3 > Site Germany Spain Germany Germany Lithuania Netherlands Germany Rotor blade > 50 47,7 22,4 > 50 28,1 48,4 31,7 Bolted blade connection 30,3 27,8 22,9 30,7 24,0 28,3 23,2 Hub > 50 > 50 > 50 > 50 > 50 > 50 > 50 Axle pin / Main shaft 29,0 > 50 23,0 > 50 > 50 > 50 > 50 Mainframe 29,0 > 50 23,0 42,6 30,7 > 50 > 50 Tower 29,8 > 50 23,3 46,4 30,8 > 50 43,0 Connection foundation - tower 28,4 38,4 22,7 46,5 30,8 49,2 39,2 Table 1. Examples of the minimum lifetime in years per component for different wind turbines Figure 3. Analysed lifetime of the weakest component 6 7

5 Wind Energy Technical Inspections Flexible solutions are your profit! Technical Inspections The cost-efficiency of every wind turbine is based on the perfect operation of all technical elements. Therefore, the 8.2 team of experts performs all necessary inspections and measurements and, in addition, inspects the quality of each respective component of the wind turbine. Services» commissioning assessment (incl. check of requirements resulting from building permit if necessary)» periodic / condition based assessments (according to requirements, e.g. in Germany every 2 4 years)» factory inspection» assessments before end of guarantee / warranty» inspection before purchase, sale and repowering» inspection of individual components e.g. gear box, generator, rotor blades etc.» assessment and inspection for continued operation» expert s report on turbulences» expert s report on structural stability Some Projects» Morocco: 300 MW Owner s Engineer» Norway, wind park Havoygavlen: end of guarantee assessment» Romania, wind park Fantanele: commissioning assessment and assessment after end of warranty» Spain: video endoscopy of 90 gear boxes» USA: damage analyses Due Diligence Projects» with a total of 6,000 MW in: Bulgaria // France // Germany // the Netherlands // Poland // Romania // Turkey 8 9

6 Wind Energy Offshore Trust our specialists! Offshore Services Due to increased wind speed combined with technically advanced turbines special knowhow is necessary for the performance of economically promising offshore projects. 8.2 will support you proficiently with the help of our practical experience resulting from various offshore projects. The 8.2 team is familiar with handling offshore turbines of the following manufacturers:» ADWEN // GE // BARD // Senvion // Siemens // Vestas Examples from our range of project references:» alpha ventus: manufacturer audits, factory acceptance tests, commissioning support and inspection after commissioning, video endoscopies» Meerwind Süd Ost: manufacturing monitoring, inspection of all main components before shipment, inspection after commissioning, periodic inspection, video endoscopies» BARD Offshore 1: Banker s and Owner s Engineer, construction and commissioning monitoring, inspection and assessment of OWEC prototypes, inspection of all main components before shipment, video endoscopies» DanTysk: manufacturing monitoring, support for shipment and installation of components, inspection after commissioning» Global Tech 1: manufacturer audits, manufacturing monitoring, construction monitoring, ESCROW-inspection, technical consulting» Butendiek: manufacturer audits, manufacturing monitoring, support and assessment of video endoscopies» Baltic 2: manufacturer audits, manufacturing monitoring, video endoscopies, technical consulting» study: Technology Forecast offshore wind» Banker s / Owner s Engineer» technical due diligence» support in negotiations EPC / building contracts / purchase of OWEC» support in preparation of tenders and contracts» consulting on grid connection of offshore wind parks» review of technical documents» inspection after commissioning» periodic inspection offshore (full package surface and subsea)» design review (turbine technology)» quality assurance during turbine manufacturing» construction monitoring of wind parks» consulting on operation and maintenance» independent data analysis of online-cms (operating stage / end of warranty)» video endoscopy of gear boxes, bearings and generators» damage analysis (Root Cause Analyses)» strength and stability calculations (analytical, FEM)» analysis of collision damage according to BSH standard» inspection before end of warranty» expert s report on structural stability and turbulences» ESCROW-inspections New Service of 8.2 Consulting AG» independent consultancy and support for all topics within the field of HSE 10 11

7 Wind Energy Offline Vibration Measurement Ask for Our Special Disciplines! Detailed Assessment of Main Components First-hand Support!» Offline Vibration Measurement» Online-Condition-Monitoring (CMS)» Video Endoscopy» Thermography» Rotor Blade Inspection» Foundation Control Vibration Analysis: How to Detect and Locate Problems on the Drive Train With the experience resulting from more than 3,500 offline vibration analyses and 1,2 GW Online-Monitoring of 300 kw 6.5 MW wind turbines the 8.2 Monitoring GmbH inspects drive trains with the help of highly efficient vibration analyses. Vibration analyses offer the possibility to identify irregularities on the drive train especially on the shafts, bearings and gear stages. We are able to provide 7 service teams for measurement in order to work efficiently even in larger wind parks. Moreover, we will evaluate your own measurements and will produce an expert report based on your data. In order to evaluate the results, the certified experts use their own software (VibraLyze PRO). Main Characteristics of the 8.2 Vibration Analysis:» very high frequency resolution for exact localization of damage» high detection rate of damage on main bearings and planetary stages» informative status reports including recommendations for action» independent assessment New Service of the 8.2 Monitoring Specialists» mobile application for service technicians and operation managers for recording of suspicious noises - Quick analysis by our experts! 12 13

8 Wind Energy Online Vibration Monitoring (CMS) Online Vibration Monitoring: Avoid Engine Breakdown and Interruption of Operation Advantages of Independent Monitoring by 8.2 Monitoring GmbH of CMS Installed by the Manufacturer: Our extensive know-how is based on 15 years of experience in the online monitoring of wind turbines. The 8.2 Monitoring GmbH offers:» online CMS for onshore and offshore applications as well as online foundation monitoring. Our control system-integrated CMS solutions for well-known control manufacturers improve the quality of the data as well as the analysis results» our professional CMS service and support in our monitoring centres in Hamburg and Kiel result in an increased security for your planning as well as in reduced risks» our analysis software VibraLyze PRO sets standards for failure detection and efficiency. This software facilitates the analysis of different types of CMS and can be used by operators as well as manufacturers for successful and economical monitoring Profit from our know-how! We are your independent CMS service provider.» a neutral analysis of the CMS data will help the operator to get an own and independent expert report of turbine status and is the basis for the risk management» detection and documentation of problems which have already occurred during warranty period but which have not caused a standstill until now or which have not yet been detected» subsequent analysis of data in cases of damage which have not yet been reported by the CMS maintained by the manufacturer» own data hosting and access to all data by the operator» better planning possibilities for offshore services» our software VibraLyze PRO is open for further signals (i.e. particle counter, process signals or foundation measurement technique etc.); thus, possible problems can be detected and assessed more easily by signal correlation New Service of the 8.2 Monitoring Specialists» independent analysis of online CMS-data at the end of warranty and parallel monitoring of offshore plants! 14 15

9 Wind Energy Special Discipline Thermography: Easy detection of problems with cable connections Video Endoscopy: For early detection of defects in components Since 2004 the 8.2 GROUP has performed more than 1,000 inspections by video endoscopy a visual examination with the help of a video camera. There is no other technique which provides a quick, secure and reliable optical examination of difficult to access areas as for example cavities or internal components of a machine. Apart from being able to visualize the internal structure of objects the video endos copy offers the possibility to assess the condition of objects as far as possible defects are concerned. Costly stand still periods of wind turbines will be reduced if defects of components are detected during an early stage. Within wind turbines the video endoscopy is mainly used for the inspection of gear boxes. However, the 8.2 experts use the video endoscopy also for the inspection and assessment of generators, pressure chambers of rotor blades and other components. During the inspection of the electrics of wind turbines or photovoltaic plants the 8.2 GROUP uses the technology of thermography. Thus, problems caused by cable connections installed in an in appropriate way can be detected more easily. On- & Offshore Rotor Blade Inspection: Experienced specialists During factory and guarantee acceptance tests, repair monitoring as well as periodic inspections, the 8.2 GROUP has already inspected more than 5,000 sets of rotor blades. Due to the vast know-how concerning the use of fibre-reinforced composites the 8.2 GROUP is considered a specialist in this sector. Rotor blades are inspected by:» rope access technique (for all heights)» platform (as far as available and as far as possible according to respective hub heights) New Service of the 8.2 Rotor Blade Specialists: laser-based measuring of rotor blade angles in order to test for rotor imbalance! 16 17

10 Wind Energy Special Discipline Construction Surveillance: Evaluation and Expertise Reports During the surveillance and evaluation of wind turbine foundations 8.2 experts inspect the conditions of foundations and determine existing damage. The 8.2 support contains optimized construction consulting during design and construction of wind turbine foundations. 8.2 helps to prevent damage by continuous monitoring and quality assurance during the construction phases via the inspection of access roads, foundations and towers. We develop refurbishment concepts to eliminate damage at wind turbine foundations. Measurement of Unfixed Tower-Restraint The measurement of unfixed tower-restraint at foundations is the most important initial point for the evaluation and the planning of refurbishment. This measurement method is to be used to check the fixed anchorage of the tower in the foundation. One advantage of this measurement method is that the elastic elongation of towers can be detected and eliminated. The output provides exact results. Quality Assurance and Control of Foundation Construction, Cable Works and Access Roads: With several years of professional experience our 8.2 team is now working actively in this area and in the control of construction works with foundation as well as the control of providing cable and access roads. The on-site building control is part of quality assurance, thus guaranteeing an operation without problems until the erection of the wind turbine and resulting in a minimum of standstill times during transport and erection of the wind turbine. Additional services:» consulting of foundation design» due diligence for wind turbine projects» planning of refurbishment for foundation» quality assurance and control for foundation refurbishment 18 19

11 PV Energy Technical Inspections Consulting and supporting all in one! The 8.2 experts are performing their inspections independently from manufacturers and operators. You will receive an impartial status report and respective recommendations. Some Projects Technical Inspections Working as independent experts the 8.2 team performs technical inspections of your photovoltaic plant and clarifies proficiently any technical problem. However, the actual work already begins with the contract control right before the erection of the photovoltaic plant. All requirements of the building permit will be checked with regards to their respective fulfilment and the delivery of the plant according to contract will be controlled. The results of any possible quality defect can thus be reduced to a minimum due to continuous construction monitoring and factory acceptance tests of components.» 2 x 50 MWp, technical inspection and O&M plan evaluation, Northern Cape, South Africa» 9 x 100 MWp, feasibility study, Owner s and Lender s engineer, Quaid-e Azam Solar Parks, Bahawalpur, Pakistan» 102 MWp, technical consulting, Karaman-Konya-Isparta, Turkey» 50 MWp, Lender s Engineer, Zhambyl Region, Kazakhstan» 80 MWp, technical inspection after commissioning, Eggebek, Germany» 13 MWp, technical due diligence, Targovishte-Buhovtsi, Bulgaria» 52 MWp, due diligence, construction monitoring, assessment after commissioning, operation monitoring, Lieberose/Turnow, Germany» 18 MWp, energy yield assessment and module tests, Thüngen, Germany» 3,3 MWp, assessment after commissioning, Abuzaderas/Albacete, Spain» 20 MWp, technical due diligence, Rothenburg/Oberlausitz, Germany» over 2,700 MWp controlled photo voltaic plants 20 21

12 PV Energy Consulting and Monitoring Consulting Energy Yield Projection: You would like to invest in the construction of a photovoltaic plant? The 8.2 GROUP will examine in advance the cost-effectiveness of your investment and will guarantee the best possible security for your investment by quality assessment. Energy Yield Assessment: The future energy yield is based on the respective selection of your plant s site. Even before its construction, 8.2 is preparing an energy yield assessment with respect to all site conditions such as surrounding and shadow, infrastructure, grid connection and weather conditions. You will receive detailed proposals for improving your energy yield and selection of site based on detailed analyses. Monitoring: With the help of our management and monitoring software SolMan PRO we will monitor your portfolio reliably and neutrally. We will detect promptly any problems of the system or in the operation due to our special algorithms. The sophisticated ticket system will support effective reporting and work flow control. Thus, quick fault detection and troubleshooting will result in sustainable improvement in profitability. Services» due diligence» energy yield assessment / energy yield projection / site assessment» feasibility studies» technical inspection» construction monitoring» consulting» system certificates» optimization of operation / system monitoring» evaluation of operating data» consulting, planning, technical assessment etc. for BIPV-Building Integrated Photovoltaic 22 23

13 Biogas Don t miss new opportunities! Technical Inspections Biogas is an especially manifold source of renewable energy. As neutral consultant the 8.2 team will perform all respective technical inspections in this sector according to up to date technology. Services» assessment before commissioning» periodic inspections (also individual components)» assessment before end of guarantee» assessment for insurance companies / owners / banks etc. after damage» technical inspections» endoscopy of gas engines and generators Consulting 8.2 is your reliable partner for consulting services, assessment and claim settlement of mechanical components of biogas plants. Based on their long term experience of several years our experts will be able to consult you in detail, proficiently and according to the respective situation. You will receive qualified assessments and elaborate bestpractise solution proposals. The 8.2 GROUP will accompany your projects from the preliminary discussions up to the commissioning of the plant, its extension and of course its long term operation. Services» support in contract negotiations with manufacturers, banks, investors» control of technical documents / contractual documents» assessments» due diligence» construction monitoring» project planning» efficiency analysis» optimising operations 24 25

14 Grid Integration State-of-the-art expertise! The grid connection has to meet high requirement levels so that the power produced by the turbines can be safely fed into the grid. The business division 8.2 Grid Integration inspects and examines your grid connection, simulates with the help of the latest software tools the performance of your turbine when connected to the grid and will guarantee that the power generation units are in accordance with grid demands. According to the principle of dual control we will supply a system certificate in cooperation with the VDE Institute which will enable you as operator to connect your turbine to the electrical supply grid. Due to our long-term know-how in grid connection we will provide extensive consultancy services for our customers as far as grid connection and electrical supplies for renewable energy are concerned. As competent consultants we will also support you as far as the direct marketing of renewable energy is concerned. Services:» certificates and reports according to BDEW medium-voltage guideline for power supply units, SDL WindV, TR8 and transmission code» system certificates for mixed wind farms with already installed turbines of different manufacturers and newly installed turbines» system certificates for wind farms with transfer turbines consisting of already installed turbines and supplementary new turbines» system certificates for wind farms with already installed turbines which will be modified according to SDL WindV» system certificates for wind farms with newly installed turbines» system certificates for PV plants» system certificates for CHPs (required by 2014)» support in performing technical due diligence for wind farms especially for grid connection and transfer stations 26 27

15 Projects Operating Worldwide! 8.2 Group for now over 20 years your independent specialist for renewable energy: 28 offices with 130 experts worldwide, comprehensive consulting services, up till now more than 22,000 technical inspections for wind on-/offshore, ca. 6,500 MW TDD projects, 5.0 GW Condition Monitoring (4.0 GW offline, 1.3 GW online), as well as more than 4.2 GWp of PV projects for our more than 5,000 customers in 50 countries

16 Offices National Offices Germany Hamburg Köln 8.2 Ingenieurbüro 8.2 Group e.v. 8.2 Consulting AG // W // B // NET Alexander Behrens // W Jürgen Holzmüller T consulting@8p2.de T Tel.: Offshore: offshore@8p2.de alexander.behrens@8p2.de request@8p2.de 8.2 Netzintegration: grid@8p2.de 8.2 Biogas: bio@8p2.de 8.2 Onshore Wind Consulting: Lippetal 8.2 Ingenieurbüro T Daniel Tönnissen // W // B Arnsberg 8.2 Ingenieurbüro international@8p2.de T Tönnissen // W 8.2 Onshore Wind Inspections // **: daniel.toennissen@8p2.de T T daniel.toennissen@8p2.de buero.aurich@8p2.de Münster 8.2 Ingenieurgesellschaft Timo Poetschke Münster mbh // W // F Aurich 8.2 Ingenieurbüro Hamburg 8.2 Ingenieurpartnerschaft T Jürgen Holzmüller // W // F // ** Kesenheimer & Loos // W timo.poetschke@8p2.de T T juergen.holzmueller@8p2.de jens.kesenheimer@8p2.de volker.loos@8p2.de Nordfriesland 8.2 Ingenieurbüro Berlin 8.2 Ingenieurbüro Axel Jensen // W Andreas Wild // W // NET Hamburg 8.2 Obst & Ziehmann GmbH T T // W // PV axel.jensen@8p2.de andreas.wild@8p2.de T dietmar.obst@8p2.de jochen.ziehmann@8p2.de Berlin 8.2 Ingenieurbüro Rennerod 8.2 Ingenieurbüro Jörn-Jakob Bauditz // W Jürgen Fuhrländer // W T Hamburg 8.2 Obst & Ziehmann T joern-jakob.bauditz@8p2.de International GmbH // PV juergen.fuhrlaender@8p2.de T dietmar.obst@8p2.de Berlin 8.2 Ingenieurbüro jochen.ziehmann@8p2.de Süderdeich 8.2 Ingenieurbüro Ingolf Rauschenbach // W // NET Manfred Lührs // W // * T T ingolf.rauschenbach@8p2.de Hamburg-Kiel manfred.luehrs@8p2.de 8.2 Monitoring GmbH // W // CM T Busenwurth 8.2 Ingenieurbüro bernd.hoering@8p2.de Thüringen 8.2 Ingenieurbüro Nikolaus Kromm // W Marcus Drößler // W T T nikolaus.kromm@8p2.de Kassel 8.2 Ingenieurbüro marcus.droessler@8p2.de Berthold Hahn // W T berthold.hahn@8p2.de Expert publicly appointed and authorized by the Chamber of Industry Experts for» W Wind turbine engineering International Offices: Austria 8.2 Ingenieurbüro Windenergie Christof Flucher // W // NET T christof.flucher@8p2.at 8.2 WindING Consult e.u. Christian Szodl // W T christian.szodl@8p2.at Denmark 8.2 Consulting Denmark // W Rasmus Ilum Nielsen T rasmus.nielsen@8p2.dk France 8.2 France SARL Bruno Allain // W // B T info@8p2.fr Pakistan 8.2 Renewable Energy Experts Pakistan Rashid Majid //PV T rashid.majid@8p2.de Portugal / Brazil 8.2 Portugal / Brasil António Monteiro Pinho// W T (Portugal) Mobil: (Brasil) antonio.pinho@8p2.de Spain/Latin America 8.2 España / América Latina Javier López Martínez // W T javier.lopez@8p2.de Südafrika South Africa South South Africa Africa Dietmar Ralf Meyerhof Obst // // W W // PV // PV Tel.: dietmar.obst@8p2.co.za ralf.meyerhof@8p2.co.za United Kingdom 8.2 Aarufield // W Julian Brown Andrew Bellamy David Matthews T info@8p2aarufield.com International Representations: Turkey 8.2 Obst & Ziehmann International GmbH Tayfun Hiz // W // PV T F and Commerce for Kiel 8.2 Sachverständigenbüro» PV Photovoltaics» * wind turbine engineering, certified Marcus Mordhorst // W» B Biogas & Biomass commercial mediator T » F Foundations, supporting structure 30» ** wind turbine engineering and marcus.mordhorst@8p2.de» CM Condition Monitoring 31 respective assessment» NET Grid Integration and / or E-Technics

17 8.2 Experts Your Experts in Renewable Energy! 32 33

18 8.2 Academy 8.2 Personally Networked know-how resulting from practical and scientific experience Special expert knowledge and experience are the key to the success story of the 8.2 GROUP. In the 8.2 Academy, this special expert knowledge and experience is bundled by a regular exchange of experience and information between the different experts. A pool of experience is growing continuously and thus, the 8.2 GROUP is a step ahead in the market. The most important objectives of the 8.2 Academy are to sustain and intensify the competence of the 8.2 GROUP by a continuous development of the internal knowledge pool as well as by a constant and high-quality professional education and training of the 8.2 experts. Therefore, the 8.2 Academy is developing appropriate training courses, workshops and discussion panels with reference to up to date topics in the areas wind energy, photovoltaic and biogas/biomass as well as to interdisciplinary topics. What does 8.2 actually mean? The company s name is inspired by the details on the heads of hexagon bolts where you can find imprinted the respective material. As for wind turbines the bolts usually used are 8.8, 10.9 and Our vision: we would not only like to meet your expectations in us and our know-how but rather to exceed them constantly. Actually, 8.2 does not exist but 8 and 2 are my favourite numbers. At that time, I did not want to found just another office for wind energy. Therefore, I deliberately chose a logo for the first consultant s office which would be kept in mind. From this time onwards, 8.2 thus represents a group of engineering offices, the first of which was founded by myself in Manfred Lührs, Consultant, Inventor & Founder of the 8.2 GROUP And: 8.2 is always celebrating a New Year s Reception every year on 08/02/ for all customers, partners, fans and friends of the 8.2 GROUP

19 // due diligence of wind turbines and PV-plants // technical consulting and inspections // damage analyses and valuation report // assessment and examination for lifetime extension // recurrent and condition based assessments // factory and guarantee acceptance tests // construction monitoring // video endoscopy // vibration analysis // foundation control // online-condition-monitoring (CMS) // rotor blade inspections // support in contract negotiations // consulting services offshore // independent consultancy and support for all topics within the field of HSE // Group e.v. Burchardstr Hamburg Tel Copyright: All pictures by 8.2 Consulting AG / 8.2 GROUP except picture page 35 by Messe & Congress Husum / Tim Riedinger 8.2 / 2017 / 1