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Siemens Gamesa’s new thorough qualification process will verify that only a maximum of 0.7 t of CO2-equivalent emissions are permitted per tonne of steel, while maintaining the same steel properties and quality. “Wind power is one of the cornerstones of the green energy transition. With more than 600 GW of new capacity to be installed worldwide in the next 5 years, it is important for the wind industry to reduce its carbon footprint. Our project to address emissions with greener steel is one such solution. With the launch of the GreenerTower, Siemens Gamesa leads the efforts to further push wind circularity and net-zero emissions,” said Maximilian Schnippering, head of Sustainability at Siemens Gamesa. Today, tower production accounts for more than 1/3 of all wind-turbine-related CO2 emissions. If all towers installed by the company in a year were exchanged with GreenerTowers, it would be the same as removing more than 466,000 cars from the roads in Europe for a year. This new CO2-reduced tower will be available as an option for both onshore and offshore wind turbines for projects to be installed from 2024 onward. “Offshore Wind already has one of the lowest life-cycle carbon footprints of power generation technologies. At RWE we are fully committed to working towards circularity and net-zero emissions. We are already testing the world’s first recyclable wind turbine blades by Siemens Gamesa under real-life conditions. By piloting the GreenerTower at our Thor offshore wind farm, RWE is now once again taking the lead by helping to significantly reduce the carbon footprint of wind turbines,” said Sven Utermöhlen, CEO RWE Offshore Wind. The German steel manufacturing company Salzgitter AG, with its heavy plate mill Ilsenburger Grobblech GmbH, is the first supplier to be qualified, something which has also been reinforced by 3rd-party certification. The process to produce greener steel entails increased use of scrap steel, less energy-intensive steel manufacturing processes, and an increased use of renewable energy sources. As one of the measures to decarbonize steel production, for example, the electric arc furnace will be fed with green electricity from offshore wind projects. On average, 1.91 t of CO2 are emitted during the manufacturing process for every ton of steel. By setting an ambitious threshold of 0.7 t CO2-equivalent emissions per tonne of steel, Siemens Gamesa significantly reduces the footprint of the largest component in terms of CO2-equivalent emissions.
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Siemens Gamesa Leads Wind Power Circularity With the Launch of a Tower Made of Greener Steel
The GreenerTower has already closed its first order. RWE and Siemens Gamesa have agreed to introduce 36 GreenerTowers at the 1,000-MW Thor offshore wind power project in Denmark. In total, 72 SG 14-236 DD offshore wind turbines are planned to be installed starting in 2026.
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