The S4000, the world's first 4,000-meter-class floating wind power system, has completed its maiden urban flight in Yueyang, Hunan Province—marking the first time a system of this class has been deployed in an urban setting. The system measures 67 meters in length, 40 meters in width, and 23 meters in height. It can reach altitudes of up to 4,000 meters, delivers an output voltage ranging from 10 kV to 35 kV, and has a designed service life of 20 years. The test validated grid-connection performance, system reliability, and the feasibility and completeness of engineering delivery in urban areas, laying the groundwork for airworthiness certification and scenario-based demonstrations.
