Energy

Star Catcher breaks DARPA's record for beaming power wirelessly

Star Catcher breaks DARPA's record for beaming power wirelessly
Star Catcher wirelessly transmitted a record-breaking amount of optical power to commercial off-the-shelf solar panels
Star Catcher wirelessly transmitted a record-breaking amount of optical power to commercial off-the-shelf solar panels
View 2 Images
Star Catcher's power grid in space will beam concentrated solar energy directly to client satellites' existing solar panels, no retrofit required
1/2
Star Catcher's power grid in space will beam concentrated solar energy directly to client satellites' existing solar panels, no retrofit required
Star Catcher wirelessly transmitted a record-breaking amount of optical power to commercial off-the-shelf solar panels
2/2
Star Catcher wirelessly transmitted a record-breaking amount of optical power to commercial off-the-shelf solar panels

Star Catcher Industries has set a new record for beaming power at a distance. Its Star Catcher Network technology beamed 1.1 kW of power at NASA’s Kennedy Space Center in Florida using off-the-shelf solar panel components.

In 1941, science fiction author Isaac Asimov introduced the public to the concept of beamed solar power from space, decades before it became a serious engineering proposal by Peter Glaser in 1968.

The concept was very simple. Instead of using up land on Earth to collect sunlight that won't be equally available in all parts of the world, would be drastically diminished by the atmosphere and weather, and not available at all at night, why not go for an alternative? That is, put solar collectors in an orbit in space where sunlight is always on tap unimpeded and a collector can be of any size desired. Just collect the energy, convert it to microwaves, and beam it back to power-starved Earth.

Interest in the concept has waxed and waned over the decades, however, recently there have been serious efforts to find a practical application for beamed power. The giant collector stations of Asimov's imagination are still, at the very least, decades away, but engineers are looking to beam power on a smaller scale, not to Earth, but from one spacecraft to another.

Star Catcher's power grid in space will beam concentrated solar energy directly to client satellites' existing solar panels, no retrofit required
Star Catcher's power grid in space will beam concentrated solar energy directly to client satellites' existing solar panels, no retrofit required

This would help to overcome a limitation of current satellite design, which is that the electricity supplied to them by solar panels is a bit limited. That means that any attempt to generate more power requires adding much larger arrays with a corresponding increase in size, mass, and launch costs.

What Star Catcher is working on is similar to DARPA, which holds the previous beaming record of 800 W set in June 2025. Instead of generating microwaves, a grid of solar panels power an optical multi-spectrum laser that can be aimed at a client satellite. These carefully controlled wavelengths are optimized to best suit the target solar panels.

Put simply, this would be like holding a huge magnifying glass on the target spacecraft, greatly increasing the efficiency of the panels without having to enlarge or even modify them. According to the company, the increase in power generation would be between two and 10 times using off-the-shelf panel components.

The latest test used a variety of solar panel designs and was a run-up to a planned orbital demonstration in 2026.

"Our existing Power Purchase Agreements confirm that the market understands both the value and scalability of our technology to revolutionize power delivery beyond Earth," said Andrew Rush, CEO and Co-Founder of Star Catcher. "These real-world results offer definitive proof of the soundness and maturity of our approach to building a resilient orbital power grid."

Source: Star Catcher

7 comments
7 comments
Brian Beban
Pity the article doesnt say over what distances and with what accuracy the laser power was delivered.
paul314
This seems most useful in situations where energy is available essentially for free at the beaning site. Typical semiconductor lasers are no more than 30% efficient, so if you layer that on top of maybe 20-25% efficiency for your solar cells and power supply, that's 10x the solar cell area as would be needed to get the same power at the receiver without any fancy footwork. Sometimes that tradeoff might be worth it.
tekteam26
I wonder if this concept could be used to provide power for lunar settlements, extending the amount of power available when any given part of the moon is in shadow? Then satellites orbiting outside of the lunar shadow could collect solar energy and beam it to receiver stations that are in line of sight with a solar power satellite, but under shadow at the time.
1stClassOPP
Is there no thought given to the effect, all the satellites floating around in space to the sun’s ability to heat the earth? For every action, there must be a reaction, or I was taught.
paul314
@1stClassOPP: Back of the envelope says that for every square mile of panels you put up, you'd reduce the amount of sunlight reaching the earth by something around 1 part in 100 million. Typical solar panels in orbits are in the tens of square meters. So we'd have to amp things up a lot, and probably the atmospheric effects of all the launches would outweigh the shading.
1stClassOPP
@paul314. I do not dispute yours analyses, but wouldn’t that factor be influenced by the distance of the orbit above the earth? My concern is that there are already thousand of structures orbiting around the globe, and if every nation were to deploy huge arrays wouldn’t it collectively have the effect of a giant parasol over the earth?
Ranscapture
Soooo…. What happens if you walk through the beam? Put a skewer in the beam. Pot of water. Pot of corn kernels. Disco ball.?