Post-Tensioning for Wind farms

Concrete reinforcement for stability and durability

Concrete wind towers are built taller and stronger to support larger rotors and capture more wind. Post-tensioning is a key structural reinforcement method that enhances stability and durability of concrete towers throughout their service life. VSL provides an external post-tensioning system developed specifically for wind towers, with European Technical Approval and field-proven performance for onshore and offshore sites.

Why post-tensioning for wind towers?  

Wind towers face high forces from wind and rotor motion over decades of operation. Concrete and hybrid towers offer durability and stability, but require reinforcement to withstand dynamic loads and long-term effects without loss of performance. Post-tensioning strengthens the concrete shell by applying compressive forces that support internal loads and limit deformation. This reinforcement also helps control cracking and enhances overall durability.

Post-tensioning reinforces the concrete shell. This support improves resistance to wind and operational loads throughout the tower’s service life.

Compression forces reduce cracking and long-term degradation. This helps maintain performance over time.

The system suits both land-based and offshore installations. It meets specific technical conditions for different sites.

The VSL external system is ETA-approved. This approval reflects compliance with stringent quality and safety standards.

Tendons can be re-stressed or released when required. This allows adjustment after initial installation for maintenance or performance needs.

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VSL’s Post-Tensioning Services

VSL provides a complete post-tensioning offering tailored to wind tower projects. Our approach supports structural design, supply, installation and logistic coordination on site.

Technical support for post-tensioning design integration

Supply of external multi-strand vertical tendons

Installation supervision and quality control

Coordination with tower construction activities

Support for re-stressing requirements when needed

Why Choose VSL for Post-Tensioning

  • Post-tensioning expertise

    VSL has deep experience in designing and applying post-tensioning systems across major structures worldwide.

  • Proprietary technology

    The external system for wind towers is developed by VSL and optimized for site use.

  • Compliance and performance

    The system holds European Technical Approval, supporting reliable long-term structural behavior.

  • Onshore and offshore capability

    VSL adapts solutions to both land-based and offshore wind tower conditions.

FAQs about post-tensioning in wind farms

These are some of the most common questions we receive. Got another one? Reach out to us!

It is a reinforcement method that applies compressive forces to concrete towers using high-strength tendons. This supports structural behavior and durability

Yes. VSL’s external system for wind towers holds European Technical Approval.

Yes. Tendons can be re-stressed or released as needed during service life.

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Planning a wind tower project with concrete reinforcement needs?

Contact VSL to discuss post-tensioning solutions tailored to your project.