China achieves 20-meter distance kilowatt-level power transmission

https://www.bignewsnetwork.com/news/270966417/china-achieves-20-meter-distance-kilowatt-level-power-transmission

"microwave radio transmission prototype... passed the acceptance of the State Grid... general transmission efficiency reached 25.5 percent... can serve in conditions of limited wire transmission such as the continuous power supply of high-altitude drones, wireless sensor network charging and power supplies under special geographical conditions"