Wind towers
Our tower division is present in strategic markets with state-of-the-art facilities with the goal of providing our customers with a global and efficient service. We are a global player in tower manufacturing with more than 60k sections produced with an installed capacity of 9000+ per year.
Towers
Offshore Towers
Our experience, industrial capacity and commitment to innovation made us start our activity in offshore wind in 2017 with the opening of the Seville plant, a pioneer in southern Europe in the production of offshore towers.
In 2025, we expanded our industrial capacity with a new plant in Gdansk, Poland, with direct access to the Baltic Sea. The factory is equipped with state-of-the-art technology and designed to meet the highest standards of quality, automation and efficiency in the industry. We have the capacity to manufacture towers up to 11M in diameter and 500tons per section. The combined capacity of both factories is +1000 offshore sections per year.
Onshore Towers
With the acquisition of Ganomagoga in 2008, GRI entered the renewable energy value chain. With a focus on standardization, continuous improvement and sustainability, it has established itself as a global leader in onshore tower manufacturing with a global industrial network that guarantees customer proximity, logistical efficiency and responsiveness. Developing an international production platform with 12 operating plants in Europe, America, Asia and Africa.
WINDTECHNIC
With over 20 years of international experience in various types of concrete towers, Windtechnic Engineering S.L. positions itself as a key strategic partner to successfully implement the optimal solution—whether a concrete or hybrid tower—in your projects.
From design and technology transfer to turnkey manufacturing, Windtechnic adapts to the specific needs of each client, thanks to the flexibility of its business model, the expertise of its team, and a solid network of local suppliers and partners.
Our work includes
- Tower design and certification.
- Technology transfer.
- Tower manufacturing.
- Technical assistance in the field.
- Tower inspection.
Our hybrid towers
Through Windtechnic, GRI provides hybrid tower solutions (Steel and Concrete) up to 200m high, designed to support the loads of the latest onshore wind turbine models. These structures are easily scalable and customizable according to customer, market and project needs, while optimizing logistics and encouraging the use of local content.
Our services include:
Tower design and certification.
Technology transfer.
Tower manufacturing.
Technical assistance in the field.
Tower inspection.
Our concrete towers
Precisely designed, built to the highest quality standards, and ready to face future challenges—this is what defines our hybrid towers.
Discover why our innovative hybrid concrete tower concept is revolutionizing the wind energy sector:
Mature, robust, and reliable technology
Validated in hundreds of towers installed worldwide.
No height or turbine power limits
With a solution easily scalable to the needs of each project.
Local production
Close to the wind farm, promoting the economic development of the area.
Optimized logistics
With standard and short-distance road transport.
Use of local materials
With less exposure to global price volatility.
Presence in 9 countries