GES is a construction company specialized in renewable energy with global experience. The company offers full EPC services. GES has constructed more than 14,900 MW of wind energy all around the world. The company covers all activities needed to accomplish the complete BOP, going with the customer through the whole value chain.

GES is involved in the project from the very first stages, developing the basic and detailed engineering and the associated infrastructures, both for the wind farm and substation. The company develops implications and execution plans. In the construction phase, GES caries out the civil and electrical works, as well as the substation and high voltage grid.

The company’s customers include the main turbine manufacturers, utilities, Independent Power Producers (IPPs), developers and investors.

14,9 GW









GES has a wide experience in executing all civil works involved in a complete construction of a wind farm (roads, platforms, foundations, médium voltage trenches, and substations). The execution team ensures all works are executing following the internal procedures of the company, ensuring the highest H&S and Quality standards for the industry, all over the world.


GES supplies the installation and commissions all electrical equipment needed for a wind farm, as well as for a substation (switches, measure equipment, transformers, médium a low voltage, protections…). GES can also provide the médium and high voltage of the wind farm.


Las Majas 6A W.F
Location:  Zaragoza (España)
Power 50 MW


GES has been responsible for the engineering and construction works of the wind farm, where it has been in charge of the complete BOP, both the civil works, with more than 14 kilometres of roads and the 13 foundations and platforms for the wind turbines, as well as the 30 kV underground medium voltage network with more than 23 kilometres of trenches and for which more than 140 kilometres of cable have been used. In addition, the installation of the 13 wind turbines of 3.8 MW and 4 MW that make part of the wind farm has been carried out by GES.

Fenicias W.F
Location: Nuevo León (México)
Power: 168 MW



The Fenicias wind farm is composed of 42 wind turbines of 4.2 MW, with a tower height of 107 meters and a rotor height of 150 meters. It is located approximately 70 km from the city of Reynosa, where GES has an extensive experience, having built more than 800 MW in the area.

GES has carried out the detailed engineering, all the necessary studies (topographical, hydrological and geotechnical), the civil BOP including the medium voltage network as well as the installation of the turbines.

One of the biggest challenges of the project has been the short project execution timing, which makes a perfect coordination of the works essential to execute the construction milestones on time.

Cluster Alenza
Location: Zaragoza (España)
Power: 114 MW



The cluster Alenza is composed of three wind farms: Las Majas 6B (49.4 MW), Las Majas 6C (49,4 MW) and Las Majas 6D (15.2 MW). GES has been responsible for civil and electrical works, as well as the installation of the wind turbines.

Cluster Valdejaon
Location: Zaragoza (Spain)
Power: 231 MW



The project has been divided into two phases: Valdejalón, which includes the El Cabezo (49MW) and Portillo II Phase I (45.6MW) and Phase II (38MW) wind farms, and Valdejalón Oeste, composed of Virgen de Rodanas I (49.4MW) and Virgen de Rodanas II (49.4MW).

GES has been in charge of the complete BOP (Balance of Plant), both the civil works, with more than 60 kilometres of roads and the 61 foundations and platforms for the 85-meter wind turbines; and the electrical works, which include the underground medium voltage network with more than 55 kilometres of trenches and the 132 kV evacuation line of almost 50 kilometres, connecting the two new substations with an already existing interconnection substation.

In addition, GES, as integral supplier, has carried out the installation of 54 turbines of this cluster, with a total installed capacity of 205 MW, as well as the crane management.

Santiago W.F.
Location: Guanajato (México)
Power: 105 MW



The wind farm, with an installed capacity of 105 MW, has 50 turbines of 2.1 MW. The scope of works included the construction of 50 foundations and a total of 46 kilometres of roads, as well as the wind farm's medium voltage network.

Dolores W.F.
Location: Nuevo León (México)
Power: 244 MW


Muxia W.F.
Location: Muxia (Spain)
Power: 68 MW
Execution schedule : 11 months



The implementation of the wind farm was carried out in winter in the rainiest area of Galicia. The knowledge of the reality of climatology and of materials behavior under these wheather conditions, allowed to take decisions, that led to the execution of the works in term in spite of being one of the rainiest winters since there are climatological records. The logistics for the transport of external materials were taken into account, in order to reaffirm the roads in the most adverse weather conditions, as well as the adoption of special designs for breakwaters and geotextiles.

There were rural nuclei scattered throughout the construction site. A Multidisciplinary team, native of Galicia with more than 15 years of experience in execution of wind farms in Galicia, connoisseur of theware of the idiosyncrasy of the inhabitants was key thanks to reached complicity and collaboration with them, so the project could be carried out in harmony with the local community.

the work had strong archaeological restrictions with more than 31 remains catalogued, sensitization and information to all staff of the location and treatment that should be done in the areas of the archaeological remains. There was daily coordination with the archaeological monitoring team.

In addition, the works were managed to avoid any kind of interference to pilgrims on the way to Santiago, limiting the speeds of vehicles and with absolute respect for pedestrians. Collaboration with pilgrims who often get lost in the mountains, guiding them.

The existence of more than 1500 owners, entailed a dedication of a person in exclusive for the treatment and the attention to the owners. Absolute respect to the parcels, collaboration with the property in the execution of boundaries and in the realization of project modifications in order to affect the smallest possible number of owners. In addition, logging was carried out on more than 400,000 m2 and the management of the wood was coordinated.

Coahuila W.F.
Customer: EDPR
Coahulia (México)
Power: 199 MW
Execution time: Enero 2016 – Enero 2017



One of the most advanced wind farms in the world


This is the first wind farm in the Coahuila state in Mexico. The project has obtained all the environmental permits for the construction and operation of the wind farm. With the construction of this wind farm, Coahuila contributes to the development of the renewable energies in Mexico, to fulfill the international agreements for the mitigation and adjustment of the climate change.

Is was a huge project with a very tight time schedule, almost a year.The area is near the municipalities of General Cepeda and Ramos Arizpe in Coahuila. There was no wind farm constructed in the area until now. This was the first project EDPR constructed in Mexico. The utility trusted GES for this strategic project.

The execution was speeded up, thanks to the previous engineering work, which led to several foundation optimizations and the customization of the geotechnical study, opting to construct the different kinds of foundation. Simultaneous work at different areas of the wind farm to get things done faster. Resources coordination was key for a time optimation. An intermediate logistic center was needed to get the material faster for each of the areas. Successful management of the CFE (Mexican electric entity) for the coordination of the power outage and the construction. The project could be executed in a positive environment with the community and unions. GES cooperated with EDPR to develop the safety conditions.

Renaico & Los Buenos Aires W.F.

Power: 112 MW
Execution schedule: November 2015 – November 2016



Cooperating with the local community


Both wind farms were placed in Mapuche territory, native Araucanians. Accesses to the wind farms were complicated. There was a flooding area in Los Buenos Aires, that made the foundations works very hard. Expediting procedures of the customer and some deadlines in the equipment deliveries made the schedule compliance difficult. Three new subcontractors have been hired to work at the substation. More experienced companies were overflow, due to the high demand of the market. Crane movements between platforms needed to be done with partial or total crane dismantling.

GES worked together with the community. Sand and gravel were bought at the local quarry and a Mapuche women cooperative was created for the services at the dining room. It was necessary to build two bridges to access the site. Water was pumped 24 hours a day to make the foundation works possible at the flooding area. Equipment deadlines have been renegotiated with suppliers and air transport was used to shorten deadlines. A very strength coordination was necessary to work with substructure to ensure the quality of the work. Road survey was continuously done, always trying to reduce the number of hours for the crane movements.

Successfully completion of the wind farm without accidents and with satisfactory quality standards.

Negrete W.F.
Client: Mainstream
Los Ángeles (Chile)
Wind turbine: Goldwind 1500 KW Wind Turbine Generator System
Power: 33 MW
Execution time:  December 2012 – December 2013

Minimizing the local impact through cooperation with the community



  • Se tata de un gran proyecto que incluye: obtención de permisos, estudio geo-técnico, ingeniería de detalle, trabajos civiles, trabajos eléctricos, subestación y edificio de control y puesta en marcha.
  • Los plazos de ejecución eran fueron muy ajustados, debido a retrasos en el diseño de las cimentaciones.
  • Ejecución de los trabajos de obra civil durante el invierno en una zona de Chile con complicada metereología.
  • Parque eólico situado en el medio de una comunidad agrícola donde las familias residen dentro de los campos de trabajo, lo que implicó una mayor atención a las medidas de H&S.


  • Se aumentaron los recursos destinados al proyecto para poder cumplir los plazos de ejecución, que fueron prolongados debido al retraso en el diseño de las cimentaciones.
  • Las medidas de H&S se aplicaron estrictamente siguiendo los estándares de GES para conseguir un lugar de trabajo seguro y evitar cualquier intromisión en la vida de la población local.
  • GES colaboró para mantener una relación amistosa con la comunidad, ayudando a la población, para tratar de minimizar el impacto del proyecto.
  • Continua interrelación entre el equipo local de GES y el departamento de ingeniería de GES en España y el cliente en Chile e Irlanda, para conseguir una óptima coordinación del proyecto.


  • El resultado en terminos de calidad fue excelente. Se mantuvieron los plazos de ejecución, pese a las dificultades y se realizaron acciones de mejora continua durante todo el proyecto, lo que se reflejó en los buenos resultados obtenidos en las auditorias. Este fue un proyecto clave para dar a conocer la labor de GES en Chile, un mercado en pleno crecimiento por aquel entonces.
Talinay W.F
Client: Vestas
Ovalle (Chile)
Wind turbine:  15 V100 2MW T80 + 30 V90 2MW T80
Power: 90 MW
Execution time : June 2012 – December 2012

A record project


Talinay is the first Wind Farm that GES has built in Chile. Construction of 25km of access roads required for the site built in various terrain and ground conditions. The project goal for construction and commisioniong was under tight deadlines for completion. The main milestone was to have all the turbines ready for commissioning before the 31st December 2012.

A comprehensive programme was established to ensure each turbine line with the required production of each phase and the necessary resources to complete all tasks within the required timeframe. We installed a Ready mix Concrete plant on-site for the supply on all turbine foundations, within the wind farm, which resulted in greater flexibility and control. A detailed logistical survey was completed prior to project commencement (to decide between sea or air transport) assisting the procurement and lead in times of required materials in accordance with programme requirements resulting in avoidance of potential delays. Some of the tasks were overlapped such as the concrete paving and the Medium Voltage grid to complete the project within the timeframe. BOP was accomplished within the contractual scope and GES successfully assembled and installed the 45 turbines on time. The project was completed in a record time of 6 months and with no accidents.

Sierra Gorda W.F.
Client: ENEL Green Power
Calama (Chile)
Power:  112 MW
Execution time: June  2016 – December 2016



Efficient solutions to deal with climatic difficulties


One of the main issues in the project was the "chusca" in this region ground, a fine sand which must be mitigated with water to comliance with the enviromental regulation of the area. Water must be carry on from Calama, the nearest city. Weather conditions made it dificult for the concret to harder. GES was in charge of the construction from the work area facilities for all suppliers working in the plant.

To avoid the chusca inconveniences, the ground was stabilized with quarry material. To compliance the project schedule, GES needed to install two work plants, to have an extra time for the harder of the concret. Electric installation of the working facilities was made with an hybrid system: 3 mini-wind turbines form 1 kW and 44 solar panels from 300 W/ each, with a capacity of 13,5 kW. termal solar power was used for the water. This was the first time an installation alike was installed in a temporary construction.

Despite all the issues and the bad weather conditions during the execution, the project was completed in time applying GES Quality and Health and Safety standards.

Oaxaca-I W.F
Client: Vestas
Location: Santo Domingo del intenio (Oaxaca, México)
Power:   101 MW
Wind turbiner: V-902 MW0 MW
Schedule: September 2010 – July 2012

Succeeding with the first phase of a huge new 400 MW wind farm in Mexico


Unos vientos fuertes y constantes implicaban que el montaje de los componentes de la turbina eólica sería particularmente complicado. Con el fin de establecer una buena relación de trabajo con el personal local, era vital una clara comprensión de la cultura indígena. Debido al terreno, a su aislamiento y a su mezcla social, esta área de México es un entorno notoriamente difícil en el que trabajar, siendo objeto de retrasos prolongados muchos proyectos de ingeniería civil.

Con el fin de cumplir con los ajustados plazos, completamos gran parte del montaje por la noche, cuando amainan los fuertes vientos. Trabajamos particularmente duro para aprender acerca de esta región de México, con el fin de comprender la cultura local y el punto de vista de las poblaciones indígenas. Presentamos gradualmente al personal local el proyecto, y trabajamos estrechamente con los técnicos locales con el fin de transferir con éxito nuestros conocimientos y habilidades. Trabajamos duro en crear colaboración y relaciones en el equipo ampliado, asegurándonos de que pudieran recurrir al nivel de recursos adecuado.

Debido a la velocidad y eficiencia de nuestros procesos de montaje, fuimos capaces de completar el proyecto más rápido de lo previsto, lo que llevó a un ahorro sustancial en el coste del alquiler de grúas. Además, el proyecto se completó sin accidentes. Y ahora podemos contar con que el parque eólico proporcione más de 4.000 horas de viento cada año.

1.     Información legal

1.1.  En cumplimiento del artículo 10 de la Ley 34/2002, de 11 de julio, de servicios de la sociedad de la información y de comercio electrónico (LSSICE) presentamos la siguiente información:


Dirección: Parque Tecnológico Bizkaia Edificio 407-48170 Zamudio– Vizcaya (España).

C.I.F.: A82509779

Teléfono: (+34) 944 712 131


Datos de la inscripción en el Registro Mercantil Vizcaya Folio: 142  Tomo: 5471

2.     Protección de datos

2.1.  Completando el formulario de registro o de contacto, enviando un correo electrónico, o llamando por teléfono, sus datos personales pasarán a ser responsabilidad de la empresa cuyos datos se relacionan en el apartado 1. Información Legal.

Además, el usuario es informado de que sus datos profesionales y de contacto serán proporcionados para su tratamiento, a otras entidades pertenecientes al Grupo de GES y a sociedades participadas por cualquiera de las sociedades que conforman el Grupo de GES.

2.2.  Estos datos se utilizan para responder a su solicitud o consulta a la mayor brevedad posible y para comunicarnos comercialmente, porque usted nos los proporciona informada y libremente con esas finalidades.

Si usted nos proporciona un currículum sus datos se utilizarán para incorporarlo a presentes y futuros procesos selectivos en nuestra empresa y para comunicarnos con usted incluso por medios electrónicos en relación con su candidatura.

Para otros tratamientos o finalidades relacionados con la prestación de nuestros servicios o el desarrollo de nuestra actividad, usted puede solicitar más información en nuestra dirección de contacto.

2.3.  Los datos personales recogidos en nuestra página web son tratados cumpliendo con las exigencias del Reglamento (UE) 2016/679 del Parlamento Europeo y del Consejo, de 27 de abril de 2016, relativo a la protección de las personas físicas en lo que respecta al tratamiento de datos personales y a la libre circulación de estos datos.

2.4.  Así mismo, garantizamos que los datos personales son tratados de manera lícita, leal y transparente, y son recogidos con fines determinados, explícitos y legítimos, manteniéndose limitados a dichos fines y actualizados si fuera necesario. No se permitirá la identificación de los interesados durante más tiempo del necesario y se garantizará su seguridad mediante las medidas técnicas y organizativas adecuadas.

2.5.  Una vez los datos no sean necesarios para los fines con los que fueron recogidos,  se conservarán a disposición de las administraciones públicas competentes durante los plazos legales de conservación, es decir mientras una ley nos pueda exigir que los presentemos. Expirados estos plazos serán suprimidos.

2.6.  Puede ejercer los derechos de acceso, rectificación, supresión, oposición así como los demás derechos que le otorga la normativa de protección de datos sobre los datos de carácter personal presentando una copia de un documento identificativo en GES – Parque Tecnológico Bizkaia Edificio 407 – 48170 Zamudio – Vizcaya (España).

2.7.  Puede encontrar más información sobre sus derechos o presentar una reclamación ante la autoridad de control competente en la Agencia Española de Protección de Datos – C/ Jorge Juan, 6. 28001 – Madrid (901 100 099 – 912 663 517).

3.     Limitación de Responsabilidades

3.1.  GES proporciona el sitio web corporativo como medio de dar a conocer sus productos y servicios, y permitir el contacto con los clientes. La información de la página web se presenta de modo meramente orientativo o divulgativo y en ningún momento será considerada vinculante. Para la contratación de los productos o servicios de la entidad se estará a lo dispuesto en presupuestos y contratos debidamente formalizados.

3.2.  La entidad no se responsabiliza sobre los posibles daños informáticos que pueda sufrir el usuario mientras visita nuestra página web entendiendo que aquellos no puedan ser imputables a la entidad.

3.3.  La entidad tampoco se responsabiliza del contenido de los sitios gestionados por terceros que se enlacen desde la página web, así mismo dichos enlaces no implicarán la existencia de algún tipo de relación por parte de GES con esos terceros.

4.     Propiedad Intelectual

4.1.  Todos los contenidos de esta página web entendiendo como tales los textos, dibujos, gráficos, fotografías, imágenes, vídeos, música, código, el propio diseño de la misma y cualquier otra creación son propiedad de GES o de sus respectivos titulares mediante la correspondiente licencia, autorización o cesión sobre los derechos y están protegidos en función de la legislación sobre la Propiedad Intelectual e Industrial.

4.2.  En ningún caso se entenderá que la puesta a disposición del público de la página web constituye renuncia, cesión o licencia de los derechos que GES tiene sobre los contenidos de la misma.

4.3.  Queda prohibido cualquier uso de los contenidos de nuestra página web incluida la modificación, copia, reproducción, transmisión, etcétera sin la previa autorización por escrito de la entidad.