In a landmark demonstration that could redefine global energy distribution, Overview Energy successfully transmitted power wirelessly from a moving aircraft in November. The test, conducted over Pennsylvania, marks a pivotal step toward the ambitious goal of space-based solar power – harvesting the sun’s energy in orbit and beaming it back to Earth.
The Dawn of Airborne Power Beaming
The November flight, involving a Cessna turboprop navigating challenging 70-knot crosswinds at 5,000 meters, wasn’t about delivering substantial wattage. It was about proving a concept: that reliable, directed energy transfer is achievable from a dynamic platform. Ashburn, Virginia-based Overview Energy, the startup behind the feat, emerged from stealth mode to announce the breakthrough, signaling a new era in wireless power transmission.
Space-Based Solar Power: A Long-Held Vision
The idea of collecting solar energy in space isn’t new. For decades, scientists and engineers have envisioned satellites equipped with vast solar arrays, continuously bathed in sunlight, beaming clean energy down to Earth. The challenge has always been how to efficiently and safely transmit that energy over vast distances. Traditional approaches, like microwaves, face spectrum allocation issues and safety concerns. Overview Energy proposes a novel solution: near-infrared waves.
“The fact is,” explains Paul Jaffe, Head of Systems Engineering at Overview Energy, “if you somehow magically had a fully operational solar power satellite that used microwave power transmission in orbit today—and a multi-kilometer-scale microwave power satellite receiver on the ground magically in place today—you could not turn it on because the spectrum is not allocated to do this kind of transmission.” Jaffe, formerly a program manager at DARPA and a three-decade veteran of the U.S. Naval Research Laboratory, joined Overview Energy after being convinced by CEO Marc Berte’s vision.
“This actually sounds like it could work,” Jaffe recalls thinking after hearing Berte’s presentation. “It really seems like it gets around a lot of the showstoppers for a lot of the other concepts.”
Infrared: A Safer, More Accessible Spectrum
Overview Energy’s strategy centers on utilizing less-dense, wide-field infrared waves. This approach offers several advantages. Existing solar farms, already designed to capture sunlight, can be readily adapted to receive the beamed energy. Furthermore, the infrared spectrum is less congested than the microwave bands, avoiding potential interference with critical communication systems like 5G. The company’s technology aims to address the critical power density problem – balancing safety with efficiency.
Recent advancements in wireless power transmission demonstrate the growing feasibility of this technology. Caltech’s Space Solar Power Project successfully transferred power in space using microwaves in 2023, and DARPA achieved a record-breaking 800 watts over 8.6 kilometers using a laser beam in July 2025. DARPA’s achievement highlights the rapid progress in this field, but Overview Energy’s airborne test is unique in its demonstration of power beaming from a moving platform.
The company’s initial tests utilized the same components and techniques planned for their space-based satellites. “Not only is it the first optical power beaming from a moving platform at any substantial range or power,” says Overview CEO Marc Berte, “but also it’s the first time anyone’s really done a power beaming thing where it’s all of the functional pieces all working together.”
Looking ahead, Overview Energy plans a prototype demonstrator in low Earth orbit, with the ambitious goal of beaming megawatts of power from GEO satellites by 2030, scaling to gigawatts in the following decade. However, significant hurdles remain, including the cost of launching and maintaining these complex systems and ensuring their resilience against orbital debris.
What role do you envision for space-based solar power in addressing the global energy crisis? And how can we balance the potential benefits of this technology with the need for responsible space stewardship?
The success of Overview Energy’s airborne test represents a significant leap forward in the pursuit of space-based solar power. While challenges undoubtedly lie ahead, the company’s innovative approach and the growing momentum in the field suggest that a future powered by the sun, harvested from space, may be closer than we think.
Frequently Asked Questions About Space-Based Solar Power
What is space-based solar power?
Space-based solar power involves collecting solar energy in space using satellites and transmitting it wirelessly to Earth for use.
Why use infrared waves for power beaming?
Infrared waves offer a safer and more accessible spectrum compared to microwaves, and existing solar farms can be adapted to receive them.
What are the biggest challenges to implementing space-based solar power?
The primary challenges include the high cost of launching and maintaining satellites, ensuring resilience against orbital debris, and achieving efficient power transmission.
How does Overview Energy’s approach differ from other space-based solar power projects?
Overview Energy focuses on using infrared waves and has successfully demonstrated power beaming from a moving platform, a first in the field.
When does Overview Energy anticipate beaming significant power from space?
Overview Energy aims to beam megawatts of power by 2030 and gigawatts by the end of the decade, pending successful prototype demonstrations.
Is wireless power beaming safe for the environment and human health?
Using lower-density beams, like those planned by Overview Energy, minimizes the risk of concentrated energy exposure, enhancing safety for both the environment and human populations.
Disclaimer: This article provides information for general knowledge and informational purposes only, and does not constitute professional advice.
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