CASSIOPeiA
Proposed satellite that beams solar power to Earth nonstop
Space Solar
UK company designing CASSIOPeiA, a solar power satellite meant to beam energy to the ground by radio. It has demonstrated a 360-degree power-beaming transmitter and is adapting the same tech to power high-altitude aircraft. (1 product in the atlas)
Headquarters and funding rounds are not stated on the company's site.
Products, by altitude
Low Earth orbit · 160–2,000 km
Announced
Milestones
- Sep 2026 Won a GBP 1.3 million ARIA contract (Project HAWK) to beam 5.8 GHz power from the ground to a wing-mounted receiver on BAE Systems' PHASA-35 high-altitude aircraft. Company statement1
- Apr 2024 Demonstrated HARRIER, a retrodirective phased-array transmitter that steers a power beam through 360 degrees, at Queen's University Belfast. Company statement2
Sources
Updated Oct 22, 2026 · How we source facts · Suggest a correction