Xcimer Energy Expands Denver Footprint and Prepares to Double Its Workforce

Leading laser fusion company adds 16,000 square feet of office space to support rapid growth

DENVER, CO (May 13, 2026) — Xcimer Energy today announced the expansion of its Colorado operations with the addition of approximately 16,000 square feet of office space in Denver, effective June 1. 

The new space at 4880 Havana Street complements Xcimer’s existing 74,000-square-foot headquarters and laser facility at 0325 East 47th Ave. and reflects the company’s accelerating growth as it advances toward building the first laser fusion power plant.

Xcimer employs nearly 200 people and plans to double its workforce over the next year, adding engineers, program managers, and business professionals across its energy and defense programs. The expansion provides the office infrastructure to support that hiring while the company’s primary facility continues to house its laser systems — including “Phoenix,” the largest privately owned laser system in the world, now operating in Denver.

“We moved from California to Colorado in 2024. Denver has been a welcoming home for this team and this technology ever since,” said Brent Gill, Chief Operating Officer of Xcimer. “Adding space nearby means we can keep growing without losing the tight-knit culture that makes Xcimer work.”

Xcimer’s roadmap 

Funded by the world’s leading energy investors and the US Department of Energy, Xcimer is advancing through a four-phase development program:

• Phoenix (2026): Largest privately owned laser system in the world. The goal of Phoenix is to demonstrate key excimer laser, pulsed power, and optical technologies at fusion-relevant scale, including the largest e-beam-pumped excimer amplifier built in 30 years.
• Anvil (2028): Full-scale commercial amplifier modules integrated into a complete two-sided beamline delivering 200 kJ to target. Expected to include the largest single laser amplifier ever built.
• Vulcan (2031): World’s highest-energy laser system, delivering 4 MJ initially and upgradeable to 12 MJ. Designed to achieve wall-plug breakeven and serve as the bridge to Xcimer’s first power plant.
• Athena (2035): Xcimer’s first fusion pilot plant, producing ~400 MWe of continuous clean energy using fuel derived from seawater and lithium. Athena is built on proven fusion physics and scalable engineering to achieve a fundamentally lower operating cost and complexity than other fusion approaches.

Learn more about Xcimer’s technology. 

Fusion: from scientific research to industrial sector

Xcimer’s growth comes as the fusion energy industry expands from scientific research to an industrial sector. A recent analysis identified more than 1,000 open roles across fusion companies in early 2026, with engineering and operations positions now outpacing physics roles — a sign of an industry crossing from laboratory to commercial reality.

Denver’s advanced manufacturing ecosystem, proximity to national laboratories, and deep talent pipeline in aerospace and defense have made it a natural hub for Xcimer’s operations. The company expects to continue expanding in Colorado and in other states.

About Xcimer Energy: Xcimer is building the industrial infrastructure for scalable laser fusion and next-generation high-power energy systems. The Denver-based company is developing an excimer-based laser fusion architecture to enable commercial fusion power while advancing energy resilience, advanced manufacturing, and national security. Founded in 2022, Xcimer is backed by leading investors and selected for U.S. Department of Energy funding. Visit xcimer.energy.

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