Offshore. Onshore. Total Wind Power Consultancy

Transcription

1 Offshore Onshore Total Wind Power Consultancy Capability Statement 2012

2 Grontmij and Wind Energy Grontmij is a leading European design, engineering and management consultancy, employing over 11,000 experts. We have more than 20 years of consultancy experience in the onshore and large scale offshore wind industry. We provide our clients second to none services in all project phases ranging from initial analysis, planning and investigation to implementation and operation. Our services draw upon the vast experience accumulated in Denmark, the world leader in wind energy development and innovation, and we have transferred this knowledge to the rest of the world. Today we implement wind projects worldwide onshore as well as offshore. We have a full project cycle approach to wind energy projects and invest our resources in identifying and addressing the various risks throughout the project lifecycle. We provide added value to our customers through all project phases from initial analysis, planning and investigation to implementation and operation. We focus on the essential elements of quality, time and cost as well as project sustainability with respect to society, environment and the economy. Owner s Engineering Services We turn ideas into reality Our full range of services as the Owner s Engineer ensures that wind turbines and wind farms meet the expectations of investors and operators. We support owners with initial feasibility studies, but we go beyond the desk studies by supporting you throughout the planning, design, tendering, implementation and commissioning phases. Environmental Impact Assessments Geotechnical investigations Wind resources Wind farm layout Foundation concept studies Detailed design of complete wind farms Drafting of technical specifications Preparation of tender documents Management of tender procedures Drafting of contracts Contract management & administration Site supervision during construction Manufacturing supervision Support during commissioning Investor assessment Due Diligence Minimising Risk in All Your Project Phases Planning and Licensing Project Development Design Tendering Construction Operation and Maintenance

3 Planning and Licensing Planning Your Project Success In order to ensure that a wind farm project is viable (and in order to obtain licences and permits) a thorough planning process must be carried out. Grontmij has unparalleled expertise in wind assessment and resource planning, assessment of the energy infrastructure and of market /demand forecasting, conceptual design, available infrastructure and logistics analysis. We draft the pre-decision basis in the form of preliminary financial estimates and a CDM opportunity assessment. Authorities & Licensing Your Liaison with Authorities We have extensive experience in working with authorities, including licensing processes. Our scope of services covers assistance in license procedures for construction, cabling, connection to the grid and electricity production. We provide continuous and dynamic contact with national and regional authorities. Due Diligence Your Guarantee of a Professional Assessment Grontmij establishes a solid base for your decision-making by providing top quality professional assessment of liability and compliance risks within the often limited time available. Our areas of expertise encompass technical, commercial, legal, environmental and social aspects. Our team, in addition to engineers, includes economists, legal experts, geologists, biologists, computer scientists and other specialists. As a world leader, our corporate knowledge base in wind due diligence is based on extensive number of projects we had carried out around the world. Our due diligence package covers, but is not limited to: Assessment of energy yield prediction, incl. wind estimation risk Project site and layout assessment, turbine suitability review, civil/ geotechnical review, evaluation of infrastructure, balance of plant review, civil woks and logistics Financial Performance/Profitability, CAPEX & OPEX calculations, forecasting, financial modelling, and scenario development Certification, permits and licenses, evaluation of the legal framework, compliance with national and international legislation, Equator Principles and investor s/lender s policies Key agreements, incl. EPC, O&M and related contracts, grid connection, Power Purchase Agreements, credits, subsidy schemes and taxation Environmental issues and potential social conflicts, Corporate & Social Responsibility Interconnection to the national grid, additional grid code requirements and risk interfaces Plant expansion opportunities Project Financing Support Finding the Best Options Grontmij provides support in preparation of bankable wind projects. Our experts are ready to help you in identification of the best financing option and provide professional assistance in structuring of a lending consortium.

4 Project Development Feasibility Studies Decisions Require Professional Back-Up We provide a well-considered service in the form of a detailed feasibility study, report assessing, wind data and energy production estimates, environmental impact assessment (EIA), type of foundations, met masts solutions, substation, grid interconnection opportunities, logistical challenges, investigation of geotechnical parameters, foundation, installation, harbour assessment, micrositing and wind farm layout, financing, legal and economic issues. Our feasibility study will equip you with thorough understanding of the conditions and terms, to confirm the viability of the wind farm development. Environmental Impact Assessment We Give You the Industry Standard By undertaking a high quality EIA study, we provide you with a proper basis for decision making, based upon the industry standard. Our starting point is the EIA Report Manual that we drafted for the Danish Energy Authority. Our extensive experience in implementing a full EIA for both onshore and offshore wind farms (incl. marine flora and fauna, visual impact, noise parameters, etc) is demonstrated by unique solutions that cannot be found elsewhere. We have world leading expertise in noise evaluation, shade flickering, advanced laser and radar studies of migrating birds, marine flora and fauna assessments particularly of fish, mammals, benthic fauna in relation to both short and long term effects. Geotechnical investigations Ground Work Done Right Grontmij has an in-depth knowledge, experience & the latest technology on support structure engineering and soil mechanics. Our topographical surveys are based on remote sensing using a unique system which is very cost effective and flexible. We use helicopters & power gliders, making our services very attractive even for small-scale projects. Our extensive experience covers planning, procurement and supervision of geotechnical and geophysical investigations, second opinion on data reporting and recommendations, planning and procurement, analysing the data, recommendations as to the type and structure of foundations, supervision and monitoring during implementation. Visualisation Securing Your Vision Visualisation is the stakeholder s instrument to assess the wind farm s visual appearance and impact on the surrounding area. The visualisation process helps to decide on the optimal siting of the wind farm taking into consideration all aspects from visual impact to cost. Grontmij has extensive experience in comprehensive visualisation programmes.

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We have a We well provide proven consulting in the track record of supporting entire design manufacturers process from and wind geotechnical developers recommendations with the utilisation to soil of new analysis materials, and to the optimisation design and of certification structures, of the new foundation innovative design. designs, transfer of knowledge from other engineering sectors, We have new the leading principles expert for the knowledge construction for both process shallow and and much deep water more. installations, including evaluation of the (often critical) effect of cyclic loads from wind in combination with current, tides, waves and ice. We use the latest computer technology with Finite Element Method modelling to include non-linear effects of cracked concrete and evaluation of Eigen frequencies. Grid Connection and Electrical Power Management Power to Connect Our experienced team is ready to back you up through the process of grid connection and electrical power management. Prior to drafting power purchase agreements, wind farms or single turbines in remote areas, we analyse hybrid systems and offgrid solutions. Tender Design Get the Right Bids We inspire contractors to optimise the price and quality through a tender design which is in the comfort zone for the contractors, adapted to the operating conditions of the wind turbines and based on best available and known technologies as well as optimised foundation concepts, site assessment and layout. Innovation we support you through power grid analysis, including Intelligent Solutions power quality and stability analysis, load flow calculations and short Design circuit calculations and manufacturing as required. of wind turbines, foundations, and blades calls for We new provide approaches, consultancy innovation and design and rethinking support for of cabling the structures. and grid connection Increased size for the of offshore onshore wind turbines, farm in site, particular, subsea challenges cabling, internal traditional cabling, designs and shore and to engineering shore linkage. to be We adapted have experience to deeper in and more transformer strenuous stations, waves switchboards, and harsher wind conditions. monitoring and We control have a systems, well proven load track and record power of quality supporting analysis manufacturers etc. For small-scale and wind developers farms or single with turbines the utilisation in remote of new areas, materials, we analyse optimisation hybrid systems of structuresgrid solutions. new innovative designs, transfer and off- of knowledge from other engineering sectors, new principles for the construction process and much more. Tender Design Get the Right Bids We inspire contractors to optimise the price and quality through a tender design which is in the comfort zone for the contractors, adapted to the operating conditions of the wind turbines and based on best available and known technologies as well as optimised foundation concepts, site assessment and layout. Innovation Intelligent Solutions Design and manufacturing of wind turbines, foundations, and blades calls for new approaches, innovation and rethinking of the structures. Increased size of offshore turbines, in particular, challenges traditional designs and engineering to be adapted to deeper and more strenuous waves and harsher wind conditions. We have a well proven track record of supporting manufacturers and wind developers with the utilisation of new materials, optimisation of structures, new innovative designs, transfer of knowledge from other engineering sectors, new principles for the construction process and much more.

7 Design Design Site Assessment Optimised Input Prior to the design of the structures for the onshore wind farm, the physical conditions on the selected site must be assessed as well as the effects on the structures. The foundation structures of offshore wind farms, in particular, are costly Site and Assessment are the parts that are most exposed Optimised to the Input physical environment. To optimize the costs, it is essential to carefully Prior to choose the design safe parameters of the structures for for geotechnical the onshore information, wind farm, the wind, physical waves, ice, conditions water levels on and the other selected site site conditions. assessed Our experienced as well as the team effects optimize on the and must be evaluate structures. on these The foundation parameters, structures taking into of account offshore the wind requirements farms, in particular, in the are standards costly and and are guidelines. the parts We that provide are most you exposed with a Site to the Assessment physical environment. ready for certification. To optimize the costs, it is essential to carefully choose safe parameters for geotechnical information, wind, waves, Design ice, water Basis levels and other site conditions. Available Our experienced Methods team optimize and Best evaluate on these parameters, taking The into Design account Basis the outlines requirements all assumptions, standards specifications and guidelines. and methodologies We provide in the for you the with design a Site of the Assessment primary structures. ready for The certification. design basis defines how the Site Assessment parameters are to be applied in the design of wind turbines and foundations. Design Basis Since the first large-scale offshore Best Available wind farm, Methods we have developed leading experience in the determination The of Design loads and Basis load outlines combinations. all assumptions, choosing specifications intelligent and methods methodologies and By specifications, for the design we of minimise the primary your structures. risk and ensure The design that the basis Design defines Basis how is ready the Site for certification. Assessment parameters are to be applied in the design of wind turbines and foundations. Since the first large-scale WTG offshore Layout wind farm, Optimisation we have developed Saving leading You experience Money and in the Creating determination of loads and load combinations. Value By choosing intelligent methods and Most specifications, developers go we for minimise standard your solutions, ensure but we that can the help Design you Basis do better. is ready for risk and A successfully certification. delivered optimisation process can reduce O&M costs, increased energy output, shorter construction WTG Layout Optimisation Saving You Money and Creating Design Basis Best Available Methods The Design Basis outlines all assumptions, specifications and methodologies for the design of the primary structures. The design basis defines how the Site Assessment parameters are to be applied in the design of wind turbines and foundations. Since the first large-scale offshore wind farm, we have developed leading experience in the determination of loads and load combinations. By choosing intelligent methods and specifications, we minimise your risk and ensure that the Design Basis is ready for certification. WTG Layout Optimisation periods and increased focus on QA. We take Saving all costs You factors Money into consideration, and Creating identify Value layout opportunities and ensure the most cost efficient power production without Most compromising developers go for requirements. standard solutions, but we can help you do better. We A have successfully supported delivered developers, optimisation manufacturers process and can operators reduce O&M in identifying costs, increased areas energy for optimisation output, shorter regarding construction off shore periods wind and turbines increased and wind focus farms. on QA. We We have take created all costs integrated factors into solutions consideration, for wind identify farm layout, opportunities foundation, materials and ensure (and the costs) most for cost tower, efficient blades power and production foundation, without production compromising processes, requirements. logistics, quality control and transportation to the construction We have supported site. developers, manufacturers and operators in identifying areas for optimisation regarding off Foundations shore wind turbines and wind farms. We Latest have Technology created integrated to your solutions for Advantage wind farm layout, foundation, materials (and costs) for tower, blades and foundation, team has production extensive experience processes, logistics, in the Our design quality and control certification and transportation of onshore and to the offshore construction foundations. site. We provide consulting in the entire design process from geotechnical recommendations to soil analysis Foundations and to the design and certification of the Latest foundation Technology design. to your Advantage We have the leading expert knowledge for both Our shallow team has and extensive deep water experience installations, the including design and evaluation certification of the of (often onshore critical) and effect offshore cyclic foundations. loads from We wind provide in combinatioting with in the current, entire design tides, waves process and from ice. consul- We geotechnical use the latest recommendations computer technology to soil with analysis Finite and Element to the Method design modelling and certification to include of the non-linear foundation effects design. of cracked concrete and evaluation of Eigen frequencies. We have the leading expert knowledge for both shallow and deep water installations, including evaluation of the (often critical) Grid effect Connection of cyclic loads from wind in combination Electrical with current, Power tides, waves and ice. and Management We use the latest computer technology Power with Finite to Connect Element Method modelling to include non-linear effects of cracked concrete experienced and evaluation team is of ready Eigen to frequencies. back you Our up through the process of grid connection and electrical power management. Prior to drafting power purchase agreements, Grid Connection and Electrical Power design and certification of onshore and offshore foundations. We provide consulting in the entire design process from geotechnical recommendations to soil analysis and to the design and certification of the foundation design. We have the leading expert knowledge for both shallow and deep water installations, including evaluation of the (often critical) effect of cyclic loads from wind in combination with current, tides, waves and ice. We use the latest computer technology with Finite Element Method modelling to include non-linear effects of cracked concrete and evaluation of Eigen frequencies. Grid Connection we support you through power grid analysis, and including Electrical power quality Power and stability analysis, Management load flow calculations and short circuit Power calculations to Connect as required. We Our provide experienced consultancy team and is ready design to back you support through for cabling the process and grid of connection grid connection for and the onshore electrical wind power farm management. site, subsea Prior cabling, to drafting internal power cabling, purchase and shore agreements, to shore we linkage. support We you have through experience power grid in analysis, including stations, power switchboards, quality and stability transformer monitoring analysis, load and control flow calculations systems, load and and short power circuit quality calculations analysis as etc. required. For small-scale wind farms or single turbines in remote areas, We we provide analyse consultancy hybrid systems and design and offgrid support solutions. for cabling and grid connection for the onshore wind farm site, subsea cabling, internal cabling, and shore to Tender shore linkage. Design We have experience in Get transformer the Right stations, Bids switchboards, monitoring and control systems, load and We power inspire quality contractors analysis to etc. optimise For small-scale the price wind and farms quality or single through turbines a tender in remote design areas, which we is analyse in the comfort hybrid systems zone for and the offgrid solutions. adapted to the operating contractors, conditions of the wind turbines and based on best available and known technologies Tender as well Design as optimised foundation concepts, Get the site Right assessment Bids and layout. 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8 Tendering Tendering Get the Rules and Price Right the First Time For smooth and cost competitive project implementation, the approach to procurement planning and tendering is of vital importance. During this process the interaction between the owner and developer on the one side and the suppliers and contractors on the other is outlined and project risks limited. Our procurement experts have over the years supported wind farm developers in the procurement process, monitoring of contract implementation and commissioning of plants. Our assistance covers procurement plans, enabling requirements for project implementation, tender document preparation, contract basis, bid schedules, bid evaluation, contract negotiation, contract management and follow-up and claims management.

9 Construction Logistics Implementation the Smart Way An important and cost saving aspect of the construction phase is well planned logistics and optimised transportation of all equipment from the manufacturer s site to the construction site. Close and efficient monitoring at the manufacturer s site can also increase the overall efficiency of the whole project, ensuring timely delivery and budget performance. We have demonstrated on several wind farm projects (incl. large scale offshore projects) that savings can be made through detailed and efficient planning of logistics, optimisation of harbour facilities, availability of the right vessels, and close monitoring of the manufacturing process. Project and Interface Management Your Success on Our Competences Health and Safety Keeping You on the Safe Side Working environments for wind farm activities are high risk construction areas with large construction materials and a large scale investment, so priotisation on health and safety is essential. Health and safety management is an integral part of managing wind construction, partly in relation to creating a culture of safe working practices and at the same time safeguarding the future success of the wind farm. Legal requirements for health and safety differ from country to country, but have to be fully respected and integrated into project implementation. We support in establishing health & safety management procedures and guidelines, performing audits, analysing and reporting on incidents and in following up on causes. We also carry out audits at manufacturers sites. Project management and interface management are essential elements in ensuring the success of construction. Our project managers are experts in project and interface management during construction activities with focus on delivering on time, to quality and budget, meeting all specifications. We provide support at the construction site and at the manufacturers production sites and we manage the supply chain activities with logistics management and contract and claims management. Our people also manage and supervise activities through manufacturing supervision and site and installation supervision at the construction location. Finally, we handle testing and commissioning activities.

10 Operation and Maintenance nt. r cus - Operation and Maintenance Operation and Maintenance Increase Efficiency, Reduce the Headache Increase Efficiency, Reduce the Headache d Maintenance Long-term availability of the wind farm Long-term availability of the wind farm is crucial for the payback on investment. is crucial for the payback on investment. Normally the availability will be 97% or Normally the availability will be 97% or more, but this requires a dedicated focus more, but this requires dedicated focus on O&M from the outset. on O&M from the outset. Our team of experts has decades of experience in operating and maintaining Our team of experts has decades of experience wind farms in operating worldwide. and On maintaining your behalf we perform independent reviews and inspections of wind farms, identifying potential technical problems, options for optimisation of normal operation as well as technical due diligence inspections. Further, we support you in planning and tendering for the service contract, Warranty Operation and Maintenance Agreements (WOMA) and in troubleshooting. Our experience allows us to effectively define O&M requirements during detailed design. wind farms worldwide. On your behalf wind farms worldwide. On your behalf we perform independent reviews and we perform independent reviews and inspections of wind farms, identifying inspections of wind farms, identifying potential technical problems, options for potential technical problems, options for optimisation of normal operation as well optimisation of normal operation as well as technical due diligence inspections. as technical due diligence inspections. Further, we support you in planning Further, we support you in planning and tendering for the service contract, and tendering for the service contract, Warranty Operation and Maintenance Warranty Operation and Maintenance Agreements (WOMA) and in troubleshooting. Our experience allows us to Agreements (WOMA) and in troubleshooting. Our experience allows us to effectively define O&M requirements effectively define O&M requirements during detailed design. during detailed design.

11 Nørrekær Enge Onshore Wind Farm, Denmark Description In Denmark commercial wind farming has existed for some 20 years. As the development of wind turbines in terms of effect and dimensions has been gradually increased since the beginning of commercial wind farming initiated in the 80 s, some 175 MW of the installed Danish wind energy capacity today is produced by wind turbines subject to replacement by modern MW range wind turbines. With the wind turbine scrap and replacement act of 2004, the Danish government has made way for a modernisation and effect improvement of the existing Danish onshore wind farm capacity, without introducing new onshore wind farm sites. The act allows for old, less effective wind turbines to be replaced with modern and more effective ones. Grontmij Carl Bro has provided consultancy services to Vattenfall A/S in the complete design and project management of the Nørrekær Enge Onshore Wind Farm, on the coast of the inland waters, Limfjorden, in the northern part of Denmark. The project consists of a replacement of 77 wind turbines installed from 1988 to 1990 with a combined capacity of 17 MW. The turbines are replaced with 13 Siemens 2,3 MW turbines with a combined capacity of 30 MW, equivalent to the energy demand of ~ households. Grontmij Carl Bro has designed and provided the documentation for a DNV certified foundation design for the wind turbines. The foundations are customized to the soil conditions on site, calling for a combination of pile supported and direct gravity based foundations. The foundation design is performed in accordance with IEC code. Grontmij Carl Bro has provided all tender documents and conducted the negotiations with the involved contractors on behalf of the client, Vattenfall A/S. During 2009 Grontmij Carl Bro has supervised all works on site, and managed the project in total. Services Design basis, geotechnical studies Detailed design, access and site roads Detailed design, 13 pile supported/ direct gravity based foundations Clearance of all permits with authorities Tender documents, contract negotiation Preparation of foundation design documentation for DNV certification Project management Total works site supervision Client: Vattenfall A/S Period:

12 Rødsand 2 Offshore Wind Farm, Denmark Project Description Rødsand 2 Offshore Wind Farm is situated in Denmark, south of the island Lolland, approximately 3 km west of Nysted Offshore Wind Farm. Owner is EON. Owners consultant is Grontmij Carl Bro. The project consists of: 90 pcs. SWP 2.3 MW, total 207 MW Gravity based concrete foundations from Aarsleff Bilfinger JV Internal MV electrical grid is supplied by NSW Wind turbines installed by A2SEA Substation and grid to coast contracted by Energinet.dk Sea depth is 6-12 m. Sea bed consists of clay till. Offshore works were initiated in August 2008 with pre-trenching for cables. Foundation manufacture in Poland started in January Dredging for foundations started January Commissioning of wind farm with 207 MW in operation will be end of Consultancy Services: Consultancy and basic design for wind farm owner during tender and production period. The services include: EIA presentation at public meeting and assistance in adapting project to public comments on EIA Preparation and initialization of compensation negotiations with Danish Fishermen s Association Layout optimization of wind farm including production prediction, screening of geotechnical information and grid cost evaluation Basic design of inter turbine grid connection Offshore sub station: Interface planning and negotiation between owners of 36 kv system and 132 kv system Planning and supervision of complete geotechnical investigations including laboratory testing for 90 wind turbines Tender assistance for wind turbines, foundations and grid Site assessment and design basis for foundation (incl. DNV certification) Study of collision friendly foundation design Planning of construction site in Rødby and Nyborg Review of contractors detailed design of foundations Interface management Client: EON Vind AB Project period:

13 Photographer: Petri & Betz

14 Foundations in Deeper Water, UK Offshore Wind Accelerator Project Manager Project Description In 2009 the Carbon Trust is launching a major new Technology Accelerator initiative focused on reducing the cost of energy ( / MWh) from offshore wind energy by 10%+. The Offshore Wind Accelerator (OWA) is the name of the program and will fund large-scale research, development and demonstration (RD&D) projects to unlock technological barriers to advance the industry and thereby accelerate its development so that significant carbon emissions reductions are achieved. Offshore wind farms to date have been predominantly constructed using either concrete gravity bases or monopile foundations. These structures are considered too expensive for the deeper water projects, particularly those which The Crown Estate will offer in Round 3 (and beyond). Project Beatrice is the first UK wind farm installed in 40 m water depth and uses a steel jacket quadruped foundation which is not commercially viable at present. The development of cost effective foundations, suitable both technically and commercially for the physical conditions likely to be encountered on Round 3 projects, is therefore needed in order to improve the economic viability of large scale offshore wind projects. This OWA project will demonstrate the viability of a (number of) deployable new generation foundation(s), that will enable economic operation of deeper water wind farms at depths of both 30-45m and 45-60m. Viability will be judged in terms of potential for volume fabrication, installation, maintainability, supply chain opportunities and operability. Consultancy Services Project manager on the program Offshore Wind Accelerator (OWA), offshore foundations. Foundation concept competition Development of 5-8 new platform concepts on meter water depth Review of foundation concepts from 5-8 consultants/contractors Make plans for tests of some of the concepts Development of site assessment and design basis. Confirm and detail the work plan/ Gantt Advise costumer on eliminating/ proceeding with designs Advise costumer issues that might arise with concept verification Negotiate with Crown Estate on the provision of a Round 3 demonstration site Ensure project is run on time and budget Develop and run the concept competition Create a standard response format and criteria for the design competition Develop and apply generic site data for initial concept screening Contract development support for concept designs where required Provide funding to designers where required Gather and synthesise data on OWA sites selected from OWA partners Advise customer on final selection process Client: Carbon Trust in corporation with Airtricity, DONGEnergy, RWE Innogy, Scottish Power and Statoil/Hydro. Period:

15 Kriegers Flak Offshore Wind Farm, Sweden Project Description On the Swedish part of the site Kriegers Flak, the power company Vattenfall is planning a 640 MW offshore wind farm constituting 128 pieces of 5 MW turbines. The water depths on the site vary between 15 and 42 m. Grontmij Carl Bro has provided permanent staff for preparation of design basis for foundations of the offshore wind farm. The services provided include evaluation of wave, current, tide and surge as well as evaluation of ice. Further load combination evaluations including wind turbine loads were carried out. The evaluations lead to prediction of loads for different foundation structures. Grontmij Carl Bro also provided assistance to writing of the design basis according to IEC and DNV- OS-J101. A spill assessment for possible future implementation of concrete foundations was prepared as an amendment of the EIA-report in order to open the possibility of using concrete foundations. managed negotiations with all tenders and prepared a contract. During the summer of 2007 Grontmij Carl Bro supervised the geotechnical investigations. Further Grontmij Carl Bro has been project manager of a foundation concept study where 5 consortia of consultants and associated contractors have developed new or improved foundation concepts including steel monopile, optimized jacket, drilled concrete monopile, gravity concrete tripod and gravity concrete cone. Results are presented at a seminar in Stockholm in March Consultancy Services: Foundation Design basis Sediment Spill Assesment for Concrete Foundations Tender preparation for geotechnical investigations Contract preparation for geotechnical investigations Supervision of geotechnical investigations Client: Vattenfall Project period: For the offshore geotechnical investigations Grontmij Carl Bro has provided several services. Initially a geotechnical baseline had to be provided in order to plan and optimise the future geotechnical investigations that would be deemed necessary. Grontmij Carl Bro evaluated existing geophysical and geotechnical data and planned an additional geophysical investigation and the full geotechnical investigation. The detailed geophysical and geotechnical evaluation planned by Grontmij Carl Bro resulted in a substantial reduction of the initially planned necessary number of borings and CPT and a substantial reduction of the budget. In order for the Client to tender for contractors for the geotechnical investigations Grontmij Carl Bro prepared pre-qualification and tender documents for international tendering in accordance with EU rules and based on FIDIC. Following the evaluation, Grontmij Carl Bro on behalf of Vattenfall

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17 Taean Offshore Wind Farm, Korea Feasibility Study Project Description Taean Offshore Wind Farm (indicated with an X on figure) is located 6 km off the western coast of Korea. Republic of Korea has a long developed onshore wind farm program, and the first offshore wind farms are now under preparation. The company IREE has by the ministry been awarded consent to prepare an offshore wind farm around 200 MW off Daesan Hang in southwest of Seoul. During 2008 Grontmij Carl Bro prepared a Feasibility study. The study also included assessment of possible tidal power technology and sucktion-bucket technology. Meteorological mast were installed. Preliminary wind farm layouts and production estimates were provided. The layout considered production, visual aspects, geotechnical situation, grid connection, environmental issues and navigation. The Wind Farm Area The area is a scenic cliff coast with resort areas. The whole coastline suffered under an oil tanker spillage in autumn 2007, but there is strong local political support to a possible wind farm project. Wind- and wave regime in the area seems modest, but is not yet verified. Foundations Geotechnical properties are challenging with water depths of m and additionally m of mud or soft clay. Feasible foundation types are concrete gravity based or steel mono-piles, though there is also a local knowhow with suction-buckets for bridge construction. Electrical Interconnection There is a 3500 MW coal-fired Thermal Power Plant located at the shore with interconnection to the national 345 kv transmission system. So interconnection to the Electrical transmission system is feasible, even without an offshore transformer Platform. Environmental Study The primary areas of possible concern are related to: Fishing, navigation, resting birds, visual impacts and recreational activities. Planned installation: After Consultancy Services: Feasibility Study, including i.e.: EIA-input and authorities issues Wind farm layouts for different site locations and installed capacity Assessment of geotechnical properties Assessment of design basis Grid connection Assessment of foundation concepts, including suction type designs Types of wind turbines Operation and maintenance aspects Economics and risks Assessment of a hybrid Tidal power system Client: I REE Project period:

18 Wind Farm in El-Zayt, Egypt Feasibility Study of a120 MW Wind Farm Project Description Based on the findings of the prefeasiblity study for a large wind farm in Egypt, Grontmij Carl Bro was requested by the client, Italgen, to prepare a more detailed feasibility study of a MW wind farm in El-Zayt, Egypt. The study included a comprehensive assessment of potential sites, taking into account issues such as bird migration, orography and flooding. Further the potential production and thereby income were assessed taking into account different potential WTG set-ups. The technical feasibility of establishing the wind farm was then assessed. This included construction issues (foundations, cables, internal roads, flood protection) and operational issues hereunder assessment of set-up of an O&M organisation. Consultancy Services: The services included: Site assessment incl. investigations Detailed wind resource estimations Production estimation Selection of WTGs Grid Connection Assessment Investment estimate (turbines and balance of plant) Technical feasibility Preparations for inclusion of CDM option Financial feasibility Environmental Impact Assessment Client: Italgen/Italcementi group Project Period: Based on the above findings investment and operation costs were estimated. With the income and cost side estimated a financial analysis was prepared to calculate NPVs, pay back periods and IRRs. Finally Grontmij Carl Bro prepared a plan for how the client could go through the final planning phase, tender phase and execution phase in order to get the wind farm in operation when required. A pre-requisite for initiating this was that the Environmental Impact study, also prepared by Grontmij Carl Bro, was issued by the client to the authorities in Egypt.

19 Wind Farm in Laayounne, Morocco Pre-feasibility study of a MW Wind Farm Project Description This study is the third study prepared by Grontmij Carl Bro for the client Italgen. Italgen s cement factory is located in southern Morocco in an area with governmental focus on private power plant investments to cover the increasing electricity demand. Italgen therefore requested Grontmij Carl Bro to look into the possibility of supplying power through wind turbines. Grontmij Carl Bro assessed the wind resource potential and a possible layout and estimated the likely production. Consultancy Services: The services included: Grid Connection Assessment Wind Resource Assessment Site Assessment Project Proposal Client: Italgen/Italcementi group Project Period: Grontmij Carl Bro further looked into the grid connection possibilities. Based on these findings Grontmij Carl Bro outlined a project proposal and recommended the Client to go into a planning and design phase in order to get the wind farm in operation expeditiously.

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