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Xcimer Energy

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Excimer-based laser fusion architecture to commercialize safe, affordable fusion energy while advancing national security.

Denver, United StatesFounded 2021Energy
Valuation $250–500M Last recorded · 2024
Headcount 100–500 Current team size
Total funding $100–500M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Xcimer Energy and the history behind them.

About Xcimer Energy

Xcimer.net is a pioneering startup in the energy sector, aiming to make fusion power a reality within the next decade. The company is developing the world's highest-energy laser system, utilizing laser technology initially designed for missile defense to create an economical 10+ megajoule class laser. This technology will be used to ignite hydrogen fuel capsules, resulting in a fusion reaction that can be harnessed for power generation.

The company's target market is the energy sector, specifically power generation. Their business model revolves around the development and commercialization of their Inertial Fusion Energy (IFE) technology. This technology has been studied in government laboratories for decades, but Xcimer is taking a unique approach by combining three essential components in a groundbreaking way.

The company's revenue model is likely to be based on the sale of their fusion power technology to energy companies and utilities. They may also generate income from licensing their technology to other companies, or from government contracts for further research and development.

Xcimer's IFE architecture includes a 10+ MJ KrF Laser, Fusion Target, and HYLIFE Chamber. The laser delivers light at a significantly lower cost and higher energy than existing technologies. The Fusion Target is a consumable fuel capsule containing hydrogen, which is ignited by the laser to create a fusion reaction. The HYLIFE Chamber, developed at Livermore National Lab and UC Berkeley, uses a liquid flow of lithium salt to absorb the fusion output and protect the structural wall, allowing for a 40-year lifetime and less waste than other concepts using DT fuel.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2021
Headquarters
Denver, United States
Employees
131
Open positions
None listed
Dealroom signal
91.8/100
Industry
Energy
Sub-industry
Clean Energy
Sector
Energy, Sustainable Development Goals, Nuclear Fusion, Climate Tech, Hard Tech, NIF defense security and resilience, NIF Energy Security and Climate Change, DT and LS, science-based
Technology
Hardware, Deep Tech
Business model
Manufacturing
Client focus
b2b

Funding history

4 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES AOther financing Jun 2024 $100M $400M Breakthrough Energy Ventures · Lowercarbon Capital · Gigascale Capital · Prelude Ventures ↗
GRANTOther financing Dec 2023 $0 — US Department of Energy ↗
Showing the latest 2 of 4 recorded eventsBook a demo for the full funding history →

Growth signals

Xcimer Energy website traffic

Latest recorded traffic for Xcimer Energy is 5.1K monthly website visits, up 1940% over the last three months. Xcimer Energy's team grew 22.4% over the past year.

Latest monthly visits5.1K 3-month web change+1940% 1-year team growth+22.4%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

Closest operating peers by Dealroom taxonomy

Company identity and context are open; selected comparison metrics preview what is available on the platform.

CompanyHeadquartersStatusEmployeesTotal fundingValuation
Renaissance FusionRenaissance Fusion builds on the success of stellarator experiments, makes them reactor-ready by quadrupling the magnetic field and simplifies them using proprietary High-Temperature Superconductors manufacturing and flowing liquid-metal walls Fontaine, France Operational 104 $52M $141M
General FusionCommercializing clean energy with Magnetized Target Fusion technology Richmond, Canada Operational
Gauss FusionIndustrial-scale stellarator fusion power plant development Hanau, Germany Operational
Novatron Fusion GroupCost-effective fusion energy solution using stable magnetic mirrors Stockholms kommun, Sweden Operational
FuseThe next generation of pulsed power fusion Napierville, Canada Operational
Crossfield FusionCrossfield Fusion has been developing a novel compact fusion reactor targeting carbon free heat and power generation. The company adopted a new approach to building fusion reactors based on patented technology called the Epicyclotron London, United Kingdom Operational
Avalanche EnergyAvalanche Energy is developing a 5kWe fusion power pack called the “Orbitron” in a form-factor the size of a lunch pail. The compact size is a key enabler of scaling for applications including micro-grids, long haul trucking, maritime shipping, aviation and space power and propulsion Seattle, United States Operational
First Light FusionInspired by the only natural example of inertial confinement on Earth, First Light Fusion is developing a practical pathway to fusion energy using the simplest machine possible Yarnton, United Kingdom Operational
Showing 8 of the closest matchesCompare every metric →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

8 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed1 investor entered at this stage

  • US Department of Energy

Series A7 investors entered at this stage

  • Starlight Ventures
  • Hedosophia
  • Breakthrough Energy Ventures
  • Lowercarbon Capital
  • Gigascale Capital
  • Prelude Ventures
  • Emerson Collective
Team profiled 13 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 4 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
1 countries with
team presence
🇺🇸 United States100%
1 country shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Xcimer Energy on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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