Energy from Space

Europe’s optical power beaming infrastructure for satellite constellations and high-performance computing in low Earth orbit.

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Sun2x transmitter Client satellite

Power is the bottleneck of low Earth orbit

Satellites carry their own solar panels and batteries. That limits how much power they have, and every extra panel adds launch mass and cost. Sun2x sends the power to them instead.

Today

~1 kW
  • Limited generation. About 1 kW on average is available on current platforms.
  • Eclipses. Half of every orbit is in shadow, so power-hungry loads stop.
  • Launch penalty. More panels and batteries mean more mass and higher cost.

With Sun2x Power-Link

15 kW+
  • Scalable power. Target of 15 kW+ per satellite by 2030 for AI and computing in orbit.
  • No extra hardware. The beam is received by the photovoltaic panels already on board.
  • Full focus. Satellites can dedicate themselves entirely to processing data.

From sunlight to electricity, over a laser link

The Sun2x transmitter collects sunlight, converts it into a modulated infrared laser beam and aims it at a customer satellite, which pays only for the power it uses. Overall, about 14% of the collected sunlight ends up as usable electricity.

  1. 100%Solar arraycollects sunlight
  2. ~40%Fiber laserconverts power to light
  3. 90%Telescope opticsshapes the beam
  4. 95%Pointingkeeps it on target
  5. ~40%PV receiveron the client satellite
  6. ~14%End to endusable electricity
1.07 µmlaser wavelength, with a 10 cm telescope aperture
~0.3 mspot size at 10 km distance (~1.3 m at 50 km)
~1 µradpointing accuracy, already demonstrated
1 USD/Wcost target for our own PV array, against 250–450 USD/W in space today

Built for orbital computing and constellations

Power on demand unlocks compute nodes and constellations that today’s satellite power systems cannot support.

Orbital computing and AI

Projects such as Aethero and Planetek need high computing power without interruption, including during eclipses.

Mass efficiency

Replacing bulky panel structures with power received by laser can cut the client satellite’s total mass by up to 40%.

Operational continuity

Continuous transmission along sun-synchronous orbits maximizes the useful time of commercial payloads.

Longer term, the same technology could beam power at night to existing solar plants on the ground, using a safe, low-density beam.

A staged path from the stratosphere to orbit

Each phase proves one part of the system before the next begins.

Years 1–3

Stratosphere

  • Two stratospheric balloons at 20–25 km altitude
  • 100–1,000 W laser over 10–100 km
  • 3–4 flight campaigns to validate pointing
Goal: 25–75 W of electrical power received
Years 4–5

LEO demonstration

  • Two proprietary satellites in orbit (150 kg and 35 kg)
  • Space-to-space transmission over 10–100 km
  • Solar cell testbed on the receiving satellite
Goal: ≥100 W of optical power transmitted
Year 6 onward

Scale-up

  • Constellation of 20 kW Power-Links
  • Commercial contracts with LEO computing operators
  • Future option of power beaming to Earth
Goal: utility-scale constellation

Strategic independence for Europe

Sun2x is built on a fully European supply chain, free from US export restrictions such as ITAR. This gives space agencies and NATO defense customers a power infrastructure they can rely on and control.

Let’s build Europe’s space utility together

Sun2x enables the next generation of high-power satellites and orbital data centers in Europe. The company is founded by an elite team of techno-industrial leaders in Europe.

info@sun2x.com