F
First Light Fusion
Energy · Yarnton, United Kingdom · Founded 2011
Inspired 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 MoreLess
First Light Fusion is a groundbreaking startup that operates in the energy sector, specifically focusing on fusion power. Their unique approach, known as projectile fusion, aims to provide a simpler, more energy-efficient solution to fusion power. This technology has been proven through a world-first result, demonstrating fusion with a projectile for the first time.
The company's mission is to create the simplest machine possible to solve the problem of fusion power. They aim to develop a technology that can scale and fit with existing power plant engineering. Their unique target designs, consisting of an amplifier and a fuel capsule, are the key to their technology. The amplifier increases the pressure of the projectile impact and creates convergence, focusing shockwaves onto the fuel capsule.
To test their target designs, First Light Fusion uses two-stage gas guns. However, to achieve higher velocities, they rely on electromagnetic launch, similar to a railgun, achieved with their pulsed power machines. Their research is supported by simulation tools that allow for rapid design optimization, and they place a strong emphasis on verification and validation.
Their power plant concept uses a liquid first wall, with pure natural lithium as the working fluid. This approach can be built with existing nuclear technology and avoids some of the significant engineering challenges of fusion, like neutron damage and producing enough tritium.
In terms of their business model, First Light Fusion is a research and development company. They make money by developing and potentially licensing or selling their technology to larger energy companies or governments interested in cleaner, more efficient power sources.
Keywords: Fusion Power, Energy Efficiency, Projectile Fusion, Power Plant Engineering, Target Design, Electromagnetic Launch, Pulsed Power Machines, Design Optimization, Liquid First Wall, Nuclear Technology.
Company overview
First Light Fusion company information
The essential company record, classifications and operating signals in one place.
- Status
- Operational
- Founded
- 2011
- Headquarters
- Yarnton, United Kingdom
- Employees
- 82
- Open positions
- 3
- Dealroom signal
- 70.1
Valuation & funding
First Light Fusion funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| LATE VCOther financing | Apr 2026 | $34M | $225M | IP Group · Hostplus · UK Atomic Energy Authority · East X Ventures | ↗ |
| SERIES COther financing | Feb 2022 | $45M | $180M | IP Group · Tencent · Hostplus · Bravos Capital | ↗ |
| SECONDARYOther financing | Jun 2021 | $0 | — | Salica Investments | — |
| LATE VCOther financing | Dec 2020 | $25M | $100M | IP Group · Hostplus · Oxford Science Enterprises | ↗ |
| LATE VCOther financing | Nov 2017 | — | — | Oxford Science Enterprises | — |
| LATE VCOther financing | Sep 2015 | IP Group | — | ||
| SERIES BOther financing | Oct 2013 | Parkwalk Advisors | — | ||
| FundingOther financing | Jul 2011 | IP Group · Parkwalk Advisors | — | ||
| SPINOUTOther financing | Mar 2011 | Oxford University Innovation · University of Oxford | — |
Financials
Revenue, earnings and profit over time
Reported history and available estimates. Estimated years are marked “E”; sparse fields are left blank rather than inferred.
| Year | Revenue | Growth | EBITDA | Margin |
|---|---|---|---|---|
| 2026 | $5K | 0% | −$19M | -413760.1% |
| 2025 | $5K | 0% | −$19M | -413760.1% |
| 2024 | $5K | +2207.1% | −$19M | -413760.1% |
| 2023 | $197 | -99.9% | −$19M | -9545885.8% |
| 2022 | $275K | +1.5% | −$12M | -4518.8% |
| 2021 | $271K | — | −$12M | -4518.7% |
Growth signals
First Light Fusion website traffic
Latest recorded traffic for First Light Fusion is 7K monthly website visits, up 4.5% over the last three months. First Light Fusion's team declined 4.7% over the past year.
Hiring
Open positions at First Light Fusion
Current openings linked to this company in Dealroom.
Comparisons
First Light Fusion compared with similar companies
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Talent graph
First Light Fusion's talent
Source: Dealroom Talent Intelligence.
Global footprint
Where First Light Fusion has talent and traffic
team presence
In the news
Latest news about First Light Fusion
Recent press, funding announcements, and product moves mentioning First Light Fusion — open to read from the original sources.
Market sentiment
What the market is saying about First Light Fusion
An AI-synthesized read of the highest-engagement posts about First Light Fusion on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.
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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