Researchers Designed New Satellite Energy Harvesters
The international POWERSAT project has created antennas to capture radio waves and infrared light for spacecraft power.
Updated on Oct. 12, 2026 in Energy
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European researchers are developing specialized devices known as rectennas to harvest stray radio energy and infrared sunlight. This technology aims to increase satellite power efficiency by up to 10 percent by capturing energy typically lost in space.
Why it matters
Spacecraft currently face strict limitations on mass and volume for power systems, making improved energy recovery essential. By capturing spillover energy, these devices could significantly extend the operational capabilities of future satellites.
The proposed antennas aim for conversion efficiencies of 80 percent or more, significantly outperforming the 30 percent efficiency typical of conventional solar panels. The research involves designing millions of micro-antennas to harvest infrared light.
The players
European Innovation Council
This body provides financial and strategic support for the POWERSAT initiative across seven countries.
Thales Research
Headquartered in France, this organization is a key industrial partner involved in the research.
The details
The POWERSAT project uses rectennas on spacecraft surfaces to convert radio wave spillover and unused infrared light into electrical power. This approach addresses critical energy loss issues inherent in current satellite design.
Timeline
Late 2026: Researchers plan to demonstrate microwave solar-energy harvesting.
End of 2027: The research project is scheduled to conclude.
Up to 10 years: Estimated timeframe for the technology to reach operational orbit.
The Big Picture
The POWERSAT project represents a shift from traditional single-source solar power systems toward hybrid energy capture in space. This research moves beyond legacy solar panel limitations to unlock new possibilities for autonomous spacecraft power.
This breakthrough could eventually lead to more powerful telecommunications and Earth-observation satellites that provide better data to ground-based systems. It suggests a future where spacecraft can operate longer and more efficiently without increased mass.
The takeaway
Advancements in energy harvesting highlight how optimizing existing waste can solve critical hardware limitations. Implementing these micro-antenna systems may redefine how spacecraft manage energy efficiency in vacuum environments.
What happens next
The research team is scheduled to hold a demonstration of microwave solar-energy harvesting by late 2026.
Further reading
Learn more about the latest innovations in space power by visiting our Energy section.
Live Poll
Should governments prioritize funding for experimental technologies designed to increase satellite energy efficiency?
