https://spc.jst.go.jp/news/260103/topic_3_02.html

China completed the lifting and installation of a 20 MW offshore wind turbine in the waters off Fujian Province.

The turbine was installed more than 30 kilometers offshore, in waters exceeding 40 meters deep. During construction, the company faced challenges such as a short work window due to the monsoon season, complex sea conditions, and risks associated with working at height. The construction team deployed a fourth-generation wind turbine installation vessel with a maximum lifting capacity of 2,000 tons, utilizing high-precision positioning technology and an intelligent pile-driving control system. The three giant blades, each measuring 147 meters in length, were steadily and steadily lifted 174 meters into the air and precisely attached to the hub. This resulted in the assembly of a large rotor with a diameter of 300 meters and a sweeping area equivalent to nearly 10 standard football fields.

The 20MW turbine is part of a national key research and development program. In addition to achieving 100% domestic production of key components, it also achieved a major breakthrough in the lightweight design of the entire turbine, reducing the weight per MW by more than 20% compared to the industry average.

Once connected to the grid, each unit is expected to generate more than 80 million kilowatt-hours (kWh) of electricity annually, enough to meet the annual electricity needs of approximately 44,000 households. This is equivalent to saving approximately 24,000 tons of standard coal and reducing carbon dioxide emissions by approximately 64,000 tons.

Photo: The lifting site of the world’s first 20MW offshore wind turbine. Photo by Zhou Junwei