Fusion startup Xcimer hopes to pick site by year’s end
Nick Scappaticci
January 20, 2026
Fusion startup Xcimer Energy plans to pick a site by year’s end to host what would be the world’s largest laser.
Accelerating the shift to abundant energy.
Xcimer is building the world’s biggest, brightest and most powerful lasers to commercialize the only scientifically validated form of fusion energy on Earth.
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Xcimer Energy
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OUR APPROACH
We’re scaling what works
We use the same approach as America’s National Ignition Facility – the only system in the world to demonstrate fusion ignition. We don’t need to spend time and money to demonstrate unproven plasma confinement physics; we combine NIF’s proven inertial confinement fusion approach with breakthrough laser technology. We’re driving down cost and complexity so we can deliver electricity on a pragmatic timeline and business model.
Approach
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OUR ACHIEVEMENTSValidating and Advancing Commercialization
In early 2025, we completed the first private-sector electron-beam excimer laser – the first of its kind built by any organization in more than 20 years. In May 2025, our KrF laser set world records – and our groundbreaking hardware informs the design of our future systems at scale.