Ørsted has conditionally named Siemens Gamesa Renewable Energy as the preferred turbine supplier for two offshore wind projects in the German North Sea. The projects have a total capacity of 1.142 GW
Siemens Gamesa will supply its new SG 11.0-200 DD offshore wind turbines at both projects – the 900-MW Borkum Riffgrund 3 and 242-MW Gode Wind 3 windfarms – and has also been awarded a five-year service and maintenance agreement.
The award is subject to certain conditions, including Ørsted’s final investment decision, which itself is subject to the projects receiving final grid dates and final consents from German authorities.
Borkum Riffgrund 3 will be the largest offshore wind project in Germany to date.
The final number of turbines for both projects remains to be determined.
Ørsted expects installation of Gode Wind 3 to begin in 2023 with commissioning completed in 2024. Installation of Borkum Riffgrund 3 is expected to begin 2024, with commissioning completed in 2025.
The SG 11.0-200 DD has a 200-m diameter rotor utilising the 97-m Siemens Gamesa B97 IntegralBlade blade. The B94 blade design has been re-used and extended to reach the new length, whereas the generator capacity remains at 11 MW, as per the SG 11.0-193 DD Flex.
The upgraded machine with 200-m diameter rotor provides an increase of 9% in annual energy production compared to the SG 10.0-193 DD offshore wind turbine, which has a 193-m diameter rotor.
Extensive research and development has gone into developing the new blade, with a focus on keeping the increase in weight below 3.5%, even as the rotor diameter increases by 3.5%.