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In offshoreWIND.biz ‘s 2024 annual wind turbine overview , you could have read about the first 16 MW floating wind platform installed offshore and a 26 MW prototype under construction, both in China, and a 21 MW prototype being assembled in Europe. Wind turbine generator (WTG) technology did not stop progressing in 2025, with Chinese OEMs still leading capacity-wise, while in Europe, first offshore wind farms are now featuring 15 MW turbines and a 21+ MW model was installed onshore for testing.
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Dongfang Installs ‘World’s Largest Single-Capacity’ Offshore Wind Turbine for Testing
In September 2025, Dongfang Electric Corporation (DEC) said that it had completed the installation of a 26 MW offshore wind turbine, which the Chinese company claims is the world’s largest in terms of single-unit capacity and rotor diameter.
The offshore wind turbine was installed at the Wind Power Equipment Testing and Certification Innovation Base in Dongying, Shandong province, China.
The unit features a rotor diameter of 310 metres and blades that measure 153 metres in length. It stands nearly 200 metres tall with a rotor sweep of 77,000 square metres, and is equipped with advanced anti-corrosion and typhoon-resistant technology.
Comprising over 30,000 components, the turbine utilises third-generation fully integrated semi-direct drive technology that combines the shaft system, gearbox, and generator. It is fully sealed to prevent salt spray corrosion and incorporates dual internal and external cooling systems.
The unit is engineered for offshore areas experiencing medium to high wind conditions, typically exceeding 8 metres per second, according to its developer.