For this purpose, Esteyco relies on three main offices located in Madrid, Barcelona and Bilbao and permanent offices located in Bogota (Colombia), Santiago (Chile), Mexico DF (Mexico), Salvador (Brazil) and Buenos Aires (Argentina).

Throughout these years, we have been creating a valuable scheme of stable collaborations with other high-specialized teams which are naturally integrated into our team, in order to complete and extend our resources when the nature of the requested service so requires. As a result, it could be said that we have left a long-lasting mark in many countries such as Belgium, Bulgaria, France, India, Irak, Iran, Qatar, Nigeria, Italy, UK and Honduras among many others.

During these almost 50 years, we have carried out over 3,000 projects and studies, both nationally and internationally, in which integration, multidisciplinarity and sustainability, combined with functionality, energy and economic efficiency are key elements in the solutions adopted.

Among other activities in which the company has been traditionally involved and that provide us with very valuable knowledge and expertise, we can find: Road engineering, Railway engineering, Bridges and structures, Architecture and urban planning, Environment, Water engineering and Project management.

Later on, in 1996, we identified the increasing interest in a field with as much future as the wind energy. Therefore, Esteyco SA decided to commit itself to the wind energy sector with the creation of Esteyco Energía, a company’s branch focused on this sector. Today, thanks to it, we have participated in more than 400 Wind Farms, with more than 10GW of installed power all over the world, creating an international model in this field with increasing activities in several countries and positioning Esteyco as one of the main actors in the design of concrete structures for wind turbines.

This project is the cornerstone for completing the ambitious strategy that ESTEYCO defined to position the company at the forefront of the wind energy civil engineer sector.

Role in the project

Esteyco is the project coordinator and main responsible for the overall design of the solution to be tested in TELWIND and later exploitation of the results of the project.

During the last years Esteyco has deployed several wind farms worldwide as well as developed R&D projects in order to reach the experimental proof of concept (TRL3 as justified in section 1.3) of the innovative solution designed presented in TELWIND.

Founded in 1983, the company has expanded steadily through a balanced strategy of organic growth and the acquisition of key companies whose experience has enhanced their specialist capabilities, with continuous expansion to this day.

His greatest achievement of 2013 was achieved by the Mega Jack on a project in Korea to lift a topside platform for installation offshore; this was the first time in history that a weight of 43,475t has been lifted.

ALE Heavylift has unquantifiable experience in the transport and installation processes of large structures, with a more than outstanding portfolio of projects. It combines the exceptional project management with engineering intelligence to offer worldwide heavy transportation and lifting services to all industry sectors.

Role in the project

ALE Heavylift using its extensive experience in the heavylifting industry, with strong position both in the wind and offshore industry will be responsible for the design and evaluation of the overall installation processes, defining all the operations and equipment required in such processes to achieve an optimised, cost efficient process in the installation of the wind turbine. Additionally, they will have a role in the design process, as both the installation process itself and most of the equipment required for the installation process has a strong influence in the structures.

Its mission is to provide an economic advantage to our customers by applying mechanics in products and processes, achieving high value for both customers and employees.

Being active in the wind energy industry since 1992, MECAL has supported many wind turbine manufacturers, component suppliers and operators of wind farms in improving their products and assets. The range of service varies from strategic product portfolio assessment, through high level technology development and R&D projects, to the design of complete offshore wind turbines. Furthermore, MECAL supports developers of offshore wind farms with optimisation of O&M strategies, taking into account the various aspects that influence OPEX, such as weather window, vessel availability, system reliability etc.

Its core competence is in the system integration approach, taking a holistic view on wind turbine technology. The approach is expressed in design, analyses, load simulations and control system optimisation.

In the Telewind project, MECAL’s primary role is in the simulation of the loads on the wind turbine and control system optimisation. In this field, we have more than 20 years’ experience.

Role in the project

MECAL will contribute in the project with his knowledge of offshore wind turbines, and will be in charge of the design of the control system and the interaction between the wind turbine and the floating platform and the load analysis and the analysis of the wind turbine systems during the whole installation process.

The Environmental Hydraulics Institute “IH Cantabria” is a joint research centre that carries out research, knowledge transfer and training of specialists in the fields of fresh and saltwater. It was founded in 2007 integrating two university departments with over twenty years of expertise in the fields of hydrodynamics; sediment transport, coastal evolution, coastal structures, coastal/ports/river engineering, estuarine dynamics, transport processes; marine and river environmental sciences; water quality; natural and anthropogenic coastal risks; numerical and physical modelling of water-related processes and integrated coastal and river basin management.

In terms of Marine Renewable Energies, IH Cantabria is developing basic and applied research for the study of marine renewable energies. Wave, wind and current interaction with offshore structures and marine renewable devices are studied based on in-house numerical models, as well as commercial numerical models, and its large-scale tests facilities. New methodologies based on statistical downscaling techniques have been developed to reproduce long term power production or wind and wave forces time series. The availability of global, regional and local met-ocean data bases provides IH Cantabria with a wide variety of statistical and deterministic wave and wind energy new concepts design methodologies. Based on them, the optimization of new concepts, as well as, economic feasibility studies uncertainty assessment analysis has been done in several research projects.

Up to now, the offshore engineering and marine renewables group have developed 8 patents; some of them have been developed up to prototype scale: Idermar project. This project has been developed by a regional company in conjunction with IH Cantabria. The impact of this project was reflected on the creation of three meteorological floating masts which were finally designed and deployed successfully. During the last years, IH Cantabria, has actively participated in 44 projects mostly related to marine renewable energies, and with some of the most important marine renewable energies stakeholders. It also has an extended scientific network with European and American Universities.

Role in the project

The University of Cantabria and the Environmental Hydraulics Institute using their experience in the analysis of the marine performance of other floating platforms for wind turbines will be in charge of the seakeeping analysis of the floating platform and the analysis and design of the mooring system. Last of all, they will perform the small scale and large scale experimental test in their facilities, in order to reach TRL 5.

It was established in 1957 as a merger of laboratories of different disciplines in civil engineering, including “Laboratory of Hydraulics” and “Laboratory of Ports” of the former Madrid School of Civil Engineering when it was part of the Ministry of Education which until then was part of the Ministry of Public Works. In this respect CEDEX has a university origin and as such continues to pay attention to academic activities by means of R&D and the organisation of courses both national and international all of which are carried out with the participation of different Spanish and international universities.

CEDEX has an important “status” as a European centre for research, having participated in many European Union Research Framework Programme projects through which it maintains close relations with similar European centres and elsewhere in the world for co-operation and scientific interchange and is present at the principal international events relating to water both continental and marine.

Role in the project

CEDEX will use their experience in the analysis of offshore wind turbines to perform the large experimental tank tests of the different transport procedure and installation processes and the numerical analysis of the transport alternatives.

ACS is a worldwide reference group for construction, civil works and related services, developing its activity in over 54 countries in key sec tors such as Oil & Gas, Infrastructures, Mining, Power & Heat (CCGT) and Energy (Renewable Energy facilities including onshore & offshore wind, tidal, hydroelectric power plants, solar PV and solar thermal –CSP– plants). ACS, through Cobra, is strongly investing in renewable wind and dispatchable solar thermal energy development; high voltage transmission lines development all around the world; and desalination plants development throughout the Mediterranean.

Cobra will use their experience in the construction and commissioning of wind farms and offshore structures to perform a complete analysis of the total cost estimation and risks involved in the construction and installation of the floating platform, helping to define the complete business case and the estimation of local content and job creating of the floating platform. Our experience in the commissioning of large scale offshore structure, offers us with the unique experience of particular issues and inconveniences these types of structures may carry, and their associated costs and impacts.

Role in the project

COBRA, as large experience contractor and promoter of both offshore structures and renewable energies around the world will use hits experience to perform the exploitation analysis and the evaluation of the socioeconomic impacts of the solution developed as part of the project.

DSI has 75 worldwide-distributed delegations with its headquarters located in Munchen (Germany). The firm will perform the designing issues and will be responsible for provision of the suspension cables for the floating platform of the telescopic tower. In addition, it will provide the on-site implementation procedures of the cables. For such purpose, the company is supported by its long-established experience in installation of prestressing tendons and bridge suspension cables. In this concern, it should be noted the significance of the corrosion protection method, especially adequate for the case.

In addition to the post-tensioned system, DSI provide form tie accessories, Gewi® bars and multi-strand stay cable systems. As a recognized market leader in Geotechnics in Europe, DSI also offers all established systems in specialized civil engineering. The product range includes ground anchors, micropiles and soil and rock bolts.

As permanent member in the relevant committees of experts and standards, the company continuously advance technical developments as well as the safety and application of Dywidag products and systems. Wherever required, DSI offers support for approvals for applications and designs that meet newly introduced and provide technical expertise and reports.

Role in the project

DYWIDAG SYSTEMS INTERNATIONAL; as one of the main suppliers of steel cables with an extended track record in the design and construction highly demanding structures such as both onshore and offshore wind towers or stayed bridges will be in charge of the design of the suspended cable system and the design of the installation procedures for the lower ballast tank.

The university covers a large spectrum both of fundamental and applied research with studies ranging from engineering, natural sciences, including life and medical sciences, to economics. In addition, it also forges strong links with major players in industry and scientific institutions across the world. Today, the university comprises 13 faculties / departments and three integrative and six corporate research centres, respectively; some 500 professors and 9,500 academic and non-academic staff are currently engaged in research activities and the teaching of more than 38,000 students (about 30 percent coming from abroad).

The chair of concrete and masonry structures is an integral part of the faculty for civil, geo and environmental engineering (four focus areas, 23 chairs) covering all fields of civil and environmental engineering, surveying and geology. The chair is directly linked to an efficient experimental re-search facility (two main testing halls utilising modern and powerful equipment including innovative systems for control and measurement) and the materials testing institute (MPA BAU) of TUM. Besides a wide area of theoretical and experimental research in structural engineering, numerical simulation and utilisation of new materials (e.g. UHPC, CFRP, textile reinforcement), the chair has a long-term experience and a strong research focus on prestressing systems and stay cables (including e.g. dynamic and fatigue behaviour, robustness and special applications such as systems in wind towers or even cryogenic conditions), monitoring, assessment and strengthening as well as consulting, developing and testing of all types of prestressing systems and cables for industrial partners.

Role in the project

The Technische Universität München, with the Chair of Concrete and Masonry Structures has an extensive experience in the testing and design of cable elements in concrete structures. They will collaborate with DSI, to design and test the different alternatives selected for the suspended cable system connecting the upper floating platform and the lower ballast tank.