The world's tallest wind turbine featuring a steel-concrete hybrid tower has been connected to the power grid in Xinji, north China's Hebei Province, on Wednesday, marking a new breakthrough in China's ultra-high steel-concrete hybrid tower technology and reaching an internationally advanced level.

The turbine has a hub height of 204 meters, equivalent to a residential building of about 70 floors. Its height allows it to better utilize stable, high-quality wind resources at higher altitudes, lowering the wind-speed threshold for developing wind power in low-wind-speed areas to below 4.5 meters per second.

Compared with a turbine of the same scale equipped with a 160-meter tower, the unit is expected to increase annual utilization hours by 220 hours and annual power generation by 6%, according to Liu Kai, an official with the Huadian Xinji Base development and construction headquarters.

The unit is also expected to save an additional 550 metric tonnes of standard coal and reduce carbon dioxide emissions by 1,371 metric tonnes annually, contributing to local green and low-carbon development.

The turbine uses China's domestically developed ultra-high steel-concrete hybrid tower technology. Through an integrated coupling design for the turbine and tower, the system avoids resonance issues at the design stage.

The tower can be assembled in sections, much like building with blocks. The project represents the world's tallest engineering application of a steel-concrete hybrid wind turbine tower and provides a replicable and scalable technical solution for developing wind power in flat areas with low wind speeds.