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Xcimer Energy

Company US Private Editorial profile Funding raised: $100M Website

Profile

Laser inertial fusion aiming for a far cheaper, higher-energy excimer laser driver.

Editorial profile — compiled by us from public sources.

Founded
2022
Headquarters
Denver, CO, US
Funding raised
$100M

Current standings

Standings and milestones are always verified by us against primary sources, regardless of who manages the profile.

Roadmap & milestones

Phoenix online — world's largest private laser system

2026-06
Xcimer Energy

Phoenix, a prototype for industrial-scale laser fusion, begins operations — demonstrating end-to-end KrF excimer amplification plus Stimulated Brillouin Scattering (SBS) pulse compression at >1 kJ through a 38 m gas optic (record energy and scale for SBS). First step toward the Vulcan laser and the Athena power plant; the gas-laser path targets lower cost than solid-state drivers.

DOE approves first private fusion-plant design review

2026-06
Xcimer / US DOE

The DOE accepted Xcimer's 724-page preconceptual design and technology roadmap for Athena, its laser-fusion power-plant architecture — billed as the industry's most comprehensive government review of a privately-developed fusion plant, under the DOE Fusion Milestone Development Program.

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