RWE on Track to Construct Thor Wind Farm with CO2-Reduced Steel, RecyclableBlades

Why It Matters

The deployment demonstrates that large‑scale offshore wind can further shrink its embodied carbon, setting a new industry benchmark for sustainable supply chains and circular‑economy practices.

Key Takeaways

• RWE uses Siemens GreenTower steel with 63% lower CO₂ emissions.
• 40 turbines will carry 120 recyclable composite blades.
• Thor will deliver 1.1 GW, powering over 1 million Danish homes.
• Full operation expected 2027; half towers built from low‑carbon steel.
• Joint venture: RWE 51%, Norges Bank Investment Management 49%

Pulse Analysis

RWE’s decision to equip the Thor offshore wind farm with Siemens Gamesa’s GreenTower steel and RecyclableBlade technology marks a tangible step toward reducing the embodied carbon of renewable infrastructure. The GreenTower steel is manufactured in renewable‑powered furnaces and incorporates a high proportion of scrap, cutting CO₂ emissions by at least 63 % compared with conventional steel. Meanwhile, the recyclable composite blades can be disassembled and repurposed for casting in automotive or consumer‑goods applications, turning what was once a waste stream into a secondary raw material. Together, these innovations lower the life‑cycle footprint of each 15‑MW turbine.

The Thor project, a 1.1‑gigawatt offshore park off Denmark’s west coast, will host 72 turbines, half of which will feature the low‑carbon steel towers and 40 turbines will carry the 120 recyclable blades. Installation is on schedule, with foundations and the offshore substation already in place and turbine erection progressing toward a 2027 commercial start‑up. When fully operational, Thor is expected to generate enough electricity for more than one million Danish households, reinforcing Denmark’s ambition to source the majority of its power from wind by the end of the decade.

RWE’s partnership with Siemens Gamesa and Norges Bank Investment Management signals that major investors are willing to back circular‑economy solutions in the energy sector. By proving that low‑emission steel and reusable blades can be deployed at scale, the Thor farm sets a benchmark that could accelerate similar retrofits across Europe’s growing offshore pipeline. Regulators may soon incorporate embodied‑carbon metrics into permitting processes, while turbine manufacturers are likely to expand recyclable‑blade portfolios to meet demand. Ultimately, these advances help align offshore wind’s already low operational emissions with a greener, more sustainable supply chain.