
China’s Upgraded High-Altitude Wind Power Project Completes Test, Targeting Clean Energy From the Stratosphere
China has completed a full flight test of its upgraded S4000 Stratosphere Airborne Wind Energy System. The system uses a flying device to capture high-altitude wind and generate electricity. Its maximum operating altitude reaches 4,000 meters, and it has a planned service life of 20 years. The test covered ascent, station-keeping, power generation, and recovery, bringing the technology closer to engineering deployment.














