Four hundred kilometres above Japan, a small satellite tips its panel toward a sun that never sets. No dusk, no clouds, no weather to wait out, just raw sunlight every orbit. It gathers that light, turns it into a beam of microwaves, and aims it at a patch of ground far below. This is space-based solar power, the old dream of harvesting the sun in orbit and sending it home, and in 2026 it stopped being only a diagram.
The amount reaching the ground is tiny, a kettle's worth at best, nothing you would notice on a bill. But a kettle's worth crossing from space on a leash of invisible light is something almost no one has done, and this is the year the teams chasing it moved from slideshows to hardware.
What actually happened
The satellite belongs to a Japanese mission called OHISAMA, run by Japan Space Systems: a roughly 180-kilogram craft with a two-square-metre solar panel, orbiting about 400 kilometres up. Its job was never to power a city, but to close one link in a long chain: collect solar energy in orbit and land it, on purpose, on a receiving station at Suwa in central Japan. The physics has been understood since the 1960s; what was missing was anyone attempting the full sky-to-ground handoff. Now that attempt is underway, with the first numbers landing. Japan's ambition is far bigger: keep scaling until an orbital array delivers a full gigawatt, a serious power station. The demo is a kettle. The dream is a grid.
Why bother leaving Earth
Every panel on the ground fights the same three enemies: night, clouds, and the horizon. Half the day the sun is gone, which is why we bolt mountains of batteries onto the grid. Put the panel in orbit and those enemies vanish: it drinks sunlight almost around the clock and delivers it when you need it, including the dark evenings when ground solar has clocked off. The prize is not more solar, but solar that does not stop.
The proof is piling up
While Japan chases the drop from orbit, other teams spent the past year nailing the pieces on the ground:
China, Xidian University. In May, it sent over a thousand watts across more than a hundred metres, the receiver capturing about 87 percent of the beam, and has sketched a 200-tonne orbital station for the 2030s.
United States, Star Catcher. It beamed more than a kilowatt of optical power onto ordinary solar panels at NASA's Kennedy Space Center in late 2025, beating the 800-watt record set by the defence agency DARPA.
Aetherflux. Founded by Robinhood co-founder Baiju Bhatt, it is building a satellite to beam power down by infrared laser.
None is a power plant. Together they are a field that just moved from PowerPoint to hardware.
How it works, minus the jargon
Strip out the acronyms and it is three steps:
Catch. An array of panels in orbit soaks up sunlight, the same tech as a rooftop panel, parked where the sun never sets.
Beam. It turns that electricity into a tightly aimed beam, usually microwaves (the same family as Wi-Fi), sometimes a laser.
Receive. A ground antenna called a rectenna grabs the beam and turns it straight back into ordinary grid electricity.
By 2026 every link had been shown for real, with OHISAMA now testing the hardest one, the drop from space.
THE HONEST CATCH
This changes nothing by Christmas. These are small efforts: a kettle from orbit at best, a beam crossing a car park, not a country. The leap to a real power station is brutal: hauling structures the size of small towns into orbit and assembling them there, and launch is still eye-wateringly expensive, which is why serious estimates land between the 2030s and 2050s. Treat the flashiest efficiency figures as claims, not gospel. And no, it is not a death ray: the beam arrives spread out and gentle, a warm patch, not a weapon. The harder battles are public trust and cross-border rules, problems of perception and law, not physics.
What it means for you
The weakness this attacks shapes your energy future. Clean power is expensive and battery-hungry because the sun sets and the wind drops; power from orbit bets on electricity that never takes the night off, and can be aimed. A power line takes years and cannot cross an ocean, but a beam can be pointed almost anywhere with a clear view of the sky: a disaster zone with no grid, a ship far from any wire, or a power-hungry AI data centre. That is why, in April 2026, Meta did not just talk about space solar, it signed for it, reserving up to a gigawatt from a startup called Overview Energy, with a demo targeted for 2028 and commercial power for 2030. When a company that size puts its name on a gigawatt, the idea has left the fringe. For most of us it arrives years from now not as a gadget but as one more option for where clean power comes from, the one that ignores the horizon.
EDITOR'S TAKE
For half a century this was the technology of someday, forever ten years away. It is still small, still expensive, still years from lighting your street. But one number turns fantasy into a plan: the cost of launching mass to orbit. As reusable rockets keep driving it down, a giant array in space stops looking absurd and starts looking like a spreadsheet. That is the line to watch. When launch gets cheap enough, the sun that never sets up there becomes a grid we can finally plug into.
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Frequently asked questions
What is space-based solar power?
Solar panels in orbit, where the sun never sets, beaming energy to Earth as focused microwaves or laser light; a receiver on the ground turns it back into ordinary electricity. The appeal is clean power that keeps flowing after dark.
Has anyone actually beamed solar power from space to Earth?
Not fully, but the pieces are falling into place. In 2026 Japan's OHISAMA satellite began sending power from orbit to a ground station, with first results now coming in. On the ground, China's Xidian University beamed over a thousand watts across more than a hundred metres, and Star Catcher set an optical-power record at NASA's Kennedy Space Center.
Is beaming power from space dangerous?
No. The beam is spread out and low in intensity across a wide area, engineered as a warm patch rather than a weapon. The real hurdles are public trust and cross-border regulation, not physics.
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