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DOE Approves Xcimer's Laser Fusion Power Plant Design

DOE Approves Xcimer's Laser Fusion Power Plant Design

First seen 11 Jun 2026, 05:55 UTC

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ThreatCluster AI
ThreatCluster June 12, 2026 at 05:37 UTC
  • The DOE approved Xcimer Energy's Athena fusion power plant design.
  • Xcimer aims for laser costs under $100 per joule with simplified technology.
  • Phoenix, Xcimer's prototype, is the largest privately owned laser system worldwide.

The Department of Energy has approved the preconceptual technical design for Xcimer Energy's Athena fusion power plant. This marks a significant step for the Denver-based company in developing economical laser inertial confinement fusion technology. Xcimer aims to simplify and reduce costs associated with laser systems, targeting costs under $100 per joule. The company has completed earlier program milestones under the DOE's Milestone-Based Fusion Development Program. Xcimer's prototype, Phoenix, is the largest privately owned laser system globally and serves as a proof of concept for their fusion architecture. The project is backed by venture capital and technical expertise from the U.S. Naval Research Laboratory. The Athena design includes a molten salt fusion chamber and two beamlines, enhancing scalability and efficiency. The approval allows Xcimer to proceed with subsystem testing and engineering validation for an integrated plant demonstration.

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Timeline

2022-01-01
Xcimer Energy founded
Xcimer Energy was established to develop economical laser inertial confinement fusion technology.
ANS
2022-12-01
National Ignition Facility achieves net energy gain
The NIF demonstrated net energy gain from inertial confinement fusion using solid-state glass lasers, validating laser fusion physics.
ANS
2026-06-10
DOE approves Athena design
The DOE approved Xcimer's Athena fusion power plant design, allowing further development and testing.
ANS

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