Nabrawind, Comansa, Tetrace and Vors Control develop an innovative system for crane-less onshore wind turbine installation
Navarre-based companies Nabrawind, Comansa, Tetrace and Vors Control have developed Skylift, an innovative system for the installation of wind turbines without the need for cranes, even under extreme wind conditions. The Skylift, patented by Nabrawind, is based on Nabraflit technology, a self-erected tower solution developed and patented by Nabrawind. During this project, the consortium of companies developed various solutions that were integrated into the existing technology.
This pioneering, market-unique solution enables the complete installation of a wind turbine in just one week, opening new possibilities for the development of wind farms in remote or hard-to-access locations.
This project has been supported by the Government of Navarra through a grant co-financed at 40% by the European Regional Development Fund (ERDF), within the framework of the ERDF Operational Programme 2021–2027 of Navarra. The funding has enabled progress on a unique market solution with high potential impact on the deployment of clean energy in complex environments.
A unique solution based on proven technology
The Skylift system builds on previously developed and validated technology by Nabrawind, which enables the self-erection of wind turbine towers without the need for large-scale cranes. This new development expands the capabilities of Nabralift, adapting it to conventional tubular towers and equipping it with resistance to adverse weather conditions, such as wind speeds of up to 15 m/s.
The system is compatible with any standard wind turbine model. Its main strength lies in its ability to complete the entire installation process in a short time without relying on heavy equipment, significantly reducing costs, risks and logistical constraints.
A system designed for demanding environments
Skylift is specially designed to operate in high-wind areas such as green hydrogen parks or remote zones with no access to the power grid—where conventional cranes cannot operate efficiently or safely. In these scenarios, the system’s advantages are maximized, enabling the deployment of wind energy in previously unfeasible locations.
A collaborative development with high added value
Each of the consortium companies contributed essential technological capabilities to the development of Skylift:
- Tetrace led the structural design of key lifting components: struts (top lifting), radials (bottom bracing), the Laos System (ovalization prevention), as well as the skidding systems for guiding tower sections. It also defined the assembly processes and operational layouts with a focus on safety, precision and efficiency.
- Comansa, traditionally focused on tower crane development, successfully embraced the challenge of entering a new sector. This project represented a strategic opportunity for the company to diversify its technical expertise and open new business lines.
- Vors Control developed the system’s dynamic physical model, based on real-world equations and parameterized using operational data. This model ensures structural balance of the Skylift system during lifting, as well as even load distribution across the platforms.
The technology developed within the Skylift framework not only addresses current challenges in the onshore wind sector, but is also aligned with the future needs of the market.
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