The sun reaches everywhere.
Now power can too.

Athanor builds solar power plants that fly: very large, high-altitude balloons, tethered above your site, delivering electricity within a week, not years.

See how it works

A power plant in the sky.

Each Athanor unit is a very large balloon skinned with solar cells, flown high above the clouds where nothing blocks the sun. A tether keeps it over your site and brings the electricity down to the ground. Scroll to watch one go up.

  1. 1Arrive

    The balloon comes packed down, with a compact ground station. Set it up at your site. There’s nothing permanent to build.

  2. 2Rise

    The balloon inflates and climbs on its tether, up through the clouds and into clear sky.

  3. 3Collect

    Up there, nothing blocks the sun. The solar skin turns sunlight into electricity.

  4. 4Deliver

    Electricity runs down the tether to the ground station and on to your site. Power is on within a week of arrival.

A week, or seven years.

Demand for electricity is outrunning the grid’s ability to connect new places, and equipment for new power plants is sold out for years. A forward base, a flooded town, or a camp at the edge of the map can’t wait that long. Athanor needs no fuel runs and nothing permanent built, and when the job is done, it moves.

  • AthanorUnder a week
  • Solar farm6–14 months to build
  • New gas plantAbout 5 years
  • Grid connection5 to 7+ years
Typical time to first power, on a log scale. Grid: median request-to-operation time over 5 years (Berkeley Lab, Queued Up, 2026), and up to 7 years for large new loads in some regions. Gas: lead time for new combined-cycle plants (BloombergNEF, 2025). Solar: construction only, after permits and interconnection; developer estimates.

Built for places the grid can’t reach in time.

Military and defense

Power forward bases and operations without long fuel supply lines or a fixed footprint.

Disaster relief

Bring hospitals, shelters, and communications back online while the grid is rebuilt.

Remote camps

Mining, research, and construction sites far from any power line.

Waiting on the grid

Start operating now, instead of years from now, while your permanent connection is built.

The athanor was the alchemist’s furnace, built to keep an even heat for as long as the work took, without anyone tending it. We borrowed the name for what we’re building: steady power that keeps itself going, fed by sunlight, wherever the work happens to be.

Need power somewhere hard?

We’re building Athanor for defense, disaster response, and remote operations. Tell us about your site and what it needs.

Or write to hello@tryathanor.com