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Xcimer Energy logo — Powering the future with cost-effective, abundant, and carbo...

Xcimer Energy

Powering the future with cost-effective, abundant, and carbon-free energy through innovative fusion technology.

Founded 2021 11-50 employees Series A Total: $117.75M Energy, Energy Efficiency

General Information

Company Name Xcimer Energy
Founded Year 2021
Employees 11-50
Industries Energy, Energy Efficiency
Funding Stage Series A
Social

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About Xcimer Energy

Xcimer Energy, founded in 2021 in Redwood City, California, is revolutionizing the energy sector with its focus on delivering carbon-free, cost-effective, and abundant energy through its innovative fusion technology. The company's slogan, "Powering the future with cost-effective, abundant, and carbon-free energy through innovative fusion technology," encapsulates its mission to leverage inertial fusion combined with excimer laser technology and the HYLIFE reaction chamber concept.

Xcimer Energy is positioned at the intersection of the Energy and Energy Efficiency industries. Its recent $100.00M Series A investment in June 2024 was backed by prominent investors including Prelude Ventures, Breakthrough Energy Ventures, Emerson Collective, Lowercarbon Capital, Starlight Ventures, Hedosophia, and Gigascale Capital. This funding round signals significant confidence in Xcimer's approach to overcoming the longstanding challenges of practical fusion power and underscores its potential to make profound impacts on global energy infrastructure.

Business keywords: Fusion Energy, Inertial Fusion, Laser-driven Fusion, Excimer Laser Technology, HYLIFE Reaction Chamber, Inertial Fusion Energy System, Carbon-free Energy, Energy Innovation, Affordable Energy Solutions, Energy Technology, Sustainable Energy, Energy Infrastructure, Energy Marketplace Transformation

Services & Products

Development of Inertial Fusion Energy Systems
Advancement of Laser Technologies for Energy
Construction of Fusion Power Plants
Engineering of Scalable Energy Solutions

Target Customers

Energy Sector Operators Investors in Clean Energy Government and National Laboratories Scientific and Research Institutions Environmental Advocates

Funding Rounds & Investors (4)

View All
Funding Stage Amount Investors Lead Investors Date
Series A $100.00M 7
Prelude Ventures, Breakthrough Energy Ventures +5
04 Jun 2024
Grant Undisclosed 1
US Department of Energy
07 Dec 2023
Grant $9.00M 1
US Department of Energy
31 May 2023
Convertible Note $8.75M 1
Starlight Ventures
01 Dec 2022

Xcimer Energy Alternatives & Competitors

View All Alternatives
Xcimer Energy vs
ENG8 Energy
ENG8 Energy Gibraltar

Powering the future creating positive loops with clean, abundant energy for all.

Seed
6 employees
Energy, Industrial
Xcimer Energy vs
First Light Fusion
First Light Fusion United Kingdom

The world’s leading inertial fusion company. Our mission: Fusion power by the simplest means possibl...

Series C
93 employees
Energy, Renewable Energy
Xcimer Energy vs
Realta Fusion
Realta Fusion United States

Developing compact, scalable, modular - CoSMo fusion(TM) energy systems for the production of indust...

Series A
62 employees
Energy, Industrial

FAQ About Xcimer Energy

Powering the future with cost-effective, abundant, and carbon-free energy through innovative fusion technology.
Xcimer Energy was founded in 2021.
Xcimer Energy operates in Energy and Energy Efficiency. Its work centres on Fusion Energy, Inertial Fusion, Laser-driven Fusion and Excimer Laser Technology. Its customers include Energy Sector Operators, Investors in Clean Energy and Government and National Laboratories.
Xcimer Energy has approximately 11-50 employees.
Xcimer Energy has completed 4 funding rounds, raising a total of $117.75M. The latest funding stage is Series A.
Xcimer Energy offers: Development of Inertial Fusion Energy Systems, Advancement of Laser Technologies for Energy, Construction of Fusion Power Plants, Engineering of Scalable Energy Solutions.
Top alternatives and competitors to Xcimer Energy include ENG8 Energy, First Light Fusion, Realta Fusion, Aquarius Energy, inewa. These companies operate in related industries and serve comparable markets. You can compare them side by side on Bounce Watch.
Xcimer Energy and ENG8 Energy are both companies in similar industries. Compare their funding, team size, growth signals, and market position on Bounce Watch to see which one fits your needs.

Source: BounceWatch company record for Xcimer Energy, https://bouncewatch.com/company/xcimer-energy, updated 18 August 2025. When citing, please name BounceWatch and link this page.

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