Renewables
CASC tests solar UAV in northwestern China
China Aerospace Science and Technology Corp has successfully tested a solar-powered unmanned aircraft designed for continuous long-duration flights.
Key points
- The Light Cavalry UAV completed its first flight on November 11.
- The aircraft features an eight-metre wingspan and integrated wing solar cells.
- Developers target commercial uses such as infrastructure and pipeline inspections.
What happened
According to pv magazine, the 11th Research Institute under the China Aerospace Science and Technology Corp. conducted the initial flight test of its Light Cavalry solar-powered unmanned aerial vehicle. The event took place at an unspecified airfield located in the northwestern region of the country.
The prototype features an eight-metre wingspan alongside a maximum takeoff mass of 45 kilograms. Its payload threshold exceeds five kilograms. Designers intend for the machine to remain airborne for up to 30 hours continuously at elevations reaching 7,000 metres. Furthermore, the system relies on a vehicle-based launching mechanism that bypasses the need for traditional runways and requires roughly 20 minutes of preparation before deployment.
Energy collection relies entirely on photovoltaic cells embedded directly within the wings. These panels distribute power to the propulsion setup during daytime hours while simultaneously recharging onboard battery storage. Once sunlight fades, the stored energy sustains operations overnight without requiring conventional fuel inputs. In-house development covered core elements including flight controls, avionics, and energy regulation.
What comes next
Project planners intend to deploy the platform across various commercial domains. Primary use cases include monitoring railway routes, assessing pipeline integrity, and checking power transmission grids over distances spanning several hundred kilometres. Additional operational areas could involve disaster management, atmospheric observation, and telecommunications support.
Despite completing this initial assessment, developers have not published a formal schedule for regulatory certification, commercial manufacturing, or unit pricing. Further trials will be necessary to establish operational reliability and secure official approvals before the platform enters standard commercial circulation.
Why it matters
Advances in unmanned aviation highlight the growing intersection between aerospace engineering and renewable energy integration. For energy investors and infrastructure operators, high-endurance solar aircraft offer a potential alternative to conventional fuel-powered helicopters or short-range multirotor drones for monitoring extensive linear assets like transmission lines and pipelines.
While industrial applications for solar propulsion are expanding globally, emerging markets must balance these technological innovations against infrastructure priorities. According to World Bank figures from 2024, global electricity consumption stands at 3,708.5 kilowatt-hours per person, while global access to electricity reaches 91.9 percent. Adopting specialized aerial monitoring tools will depend heavily on cost efficiencies and regional operational requirements rather than technical capability alone.
Original reporting
This article draws on the following reports. Read them in full on the publishers’ sites.
Context from CEII
Renewables are the fastest-growing part of the world’s energy system. The COP28 goal is to triple capacity by 2030, and solar mini-grids are the fastest route to power for millions of people without electricity.
28.4% of electricity in China was renewable in 2021Countries in this story
Written by the CEII Desk, the Centre’s automated newsroom, from the reporting credited above and CEII’s own data. Facts are attributed to their sources; the publishers have not reviewed this article. Spotted an error? Tell our editors.
