Important step towards more efficient generation of wind energy

Covestro receives DNV certification for polyurethane resin in Europe

  • Worldwide support for rotor blade production
  • A cost-efficient, durable, and sustainable solution

With innovative material solutions, Covestro wants to push the boundaries of wind energy technology to boost the profitability and performance of wind turbines and support the further expansion of this renewable energy. The company has now received the important DNV certification for a polyurethane (PU) infusion resin that will be marketed in Europe, The Americas, Middle East and Africa. The unique resin allows for a cost-effective production of rotor blades. A few years ago, a PU resin developed by Covestro in China also passed the audits of the DNV Society. The classification is recognized worldwide and eases market access.

"The certification brings us one big step closer to our goal of making wind power generation more efficient," says Dirk Soontjens, who coordinates the global wind power program at Covestro. "At the same time, we are underscoring our global reach and desire to help wind turbine manufacturers around the world adopt this cost-effective, durable, and sustainable solution. For this purpose, we operate expert laboratories in Shanghai and Leverkusen and are currently scaling up more production capacity for the newly certified resin."

Advantages over epoxy resins

"The rotor blades are manufactured from the PU infusion resin and fiberglass meshes under vacuum in a process we developed together with our partners," explains Klaus Franken, who is responsible for the development of processing technologies. "Due to the high infusion speed combined with faster curing and significantly lower heat release of the PU resin compared to the commonly used epoxy resins, the productivity of rotor blade production can be significantly increased."

The DNV certification mark also confirms the good mechanical properties of the resin in rotor blades for wind turbines. This opens up opportunities for design optimization to produce lighter and longer blades.

Working with customers in the wind power value chain, Covestro offers materials that not only inspire innovation in wind turbine design, but also help boost the efficiency of wind farms on a larger scale. In addition to polyurethane resins, these include raw materials for protective coatings, including those for leading edges of rotor blades, and elastomers for guiding submarine cables.

A pillar of the circular economy

Renewable energy sources such as wind energy are becoming an increasingly important alternative to fossil fuels. In addition to developing innovative material solutions for wind turbines, Covestro aims to continuously enhance its production processes and energy systems to pave the way for a climate-neutral future. This is also a key pillar of a global program to fully align the company with the circular economy.

This also includes securing Covestro´s own energy supply from renewable sources. That's why the company has signed a supply agreement with the energy provider Ørsted to supply its German sites with green electricity starting in 2025. A contract has now also been signed with the Belgian utilities company ENGIE to supply the Antwerp site from its wind turbines, starting as early as April 1, 2021.


About Covestro:

With 2020 sales of EUR 10.7 billion, Covestro is among the world’s leading polymer companies. Business activities are focused on the manufacture of high-tech polymer materials and the development of innovative, sustainable solutions for products used in many areas of daily life. In doing so, Covestro is fully committed to the circular economy. The main industries served are the automotive and transportation industries, construction, furniture and wood processing, as well as electrical, electronics, and household appliances industries. Other sectors include sports and leisure, cosmetics, health and the chemical industry itself. At the end of 2020, Covestro has 33 production sites worldwide and employs approximately 16,500 people (calculated as full-time equivalents).

Forward-looking statements

This news release may contain forward-looking statements based on current assumptions and forecasts made by Covestro AG. Various known and unknown risks, uncertainties and other factors could lead to material differences between the actual future results, financial situation, development or performance of the company and the estimates given here. These factors include those discussed in Covestro’s public reports which are available at www.covestro.com. The company assumes no liability whatsoever to update these forward-looking statements or to conform them to future events or developments.