Pacific Fusion
Fremont, US · 220 employees on LinkedIn · 12 known investors
Pacific Fusion is developing a high-gain pulsed magnetic inertial fusion system designed to achieve net facility gain, using a modular fast electric pulser, a meter-scale fusion chamber, and small fuel containers. The company aims to produce affordable, on-demand fusion power to meet global energy demand and address climate change.
Founders & leadership
Investors · 12
Company profile
researched Aug 2026Pacific Fusion is a fusion energy company working to build a high-gain pulsed magnetic inertial fusion system intended to achieve net facility gain — producing more fusion energy output than the total stored energy input. In pulsed magnetic inertial fusion, a fuel container is rapidly compressed by a powerful magnetic field generated by driving a large, fast-rising electrical current across it; the compression heats and inertially confines the fuel so hydrogen fuses into helium, releasing energy. The company describes the cycle as repeating continuously, comparable to a piston engine.
The company frames its approach as building on advances made by the US National Laboratories in 2022, which reported major gains in inertial fusion performance using both pulsed lasers and pulsed magnetic drivers, and also demonstrated a more efficient method of generating large, fast electrical current pulses suitable for driving pulsed magnetic fusion. Pacific Fusion positions its work as combining established science, practical engineering, and affordable manufacturing so that fusion can be commercially viable, with the stated goal of supplying affordable, reliable, on-demand power to meet growing global energy demand and address the climate crisis.
Latest developments
The company is recruiting for open roles as it works to construct its high-gain pulsed magnetic fusion system.
▸Full profile — market position, technology, go-to-market, geography
Market position
Pacific Fusion is pursuing commercial fusion energy via the pulsed magnetic inertial fusion route, an approach it describes as known for decades but previously lacking a clear path to commercial power generation.
Technology
Pacific Fusion's system architecture has three principal elements: a fast electric pulser assembled from thousands of identical parts, a meter-scale fusion chamber, and many centimeter-scale fuel containers. The design is described as highly modular to enable affordable manufacturing and rapid iteration, and it relies on common materials to simplify supply chains. The underlying physics approach is pulsed magnetic inertial fusion, in which a fast-rising electrical current generates a magnetic field that compresses and inertially confines the fuel. The company cites two enabling advances from US National Laboratory work in 2022: improved inertial fusion performance with laser-driven and magnetically driven drivers, and impedance-matched Marx generators as an efficient means of producing large, fast electrical current pulses.
Go-to-market
The company targets global electricity demand, aiming to deliver affordable, reliable, on-demand fusion power.
Geography
Headquartered in Fremont, United States.
Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Founder mafia
2 people who came through Pacific Fusion went on to found or lead other companies.
Competitors · 4
by search overlap
Companies competing with Pacific Fusion for the same Google search keywords, organic and paid, via search-intersection analysis.
In the news
Billion-dollar machine aims to set a fusion-energy record — and study nuclear weapons | Naturenature.com · Aug 2026
Every fusion startup that has raised over $100M | TechCrunchtechcrunch.com · Aug 2026▸Research sources · 1
primary sources listed
- Pacific Fusionpacificfusion.com · web
1 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Pacific Fusion do?
- Pacific Fusion is developing a high-gain pulsed magnetic inertial fusion system designed for net facility gain.
- Who founded Pacific Fusion?
- Pacific Fusion was founded by Keith LeChien, Will Regan.
- Who are Pacific Fusion's investors?
- Pacific Fusion's investors include Acario Innovation, Alumni Ventures, Basecamp Fund, Berkeley Frontier, DCVC (Data Collective), Leitmotif, Lightspeed Venture Partners, LOWERCARBON and 4 more.
- Where is Pacific Fusion headquartered?
- Pacific Fusion is headquartered in Fremont, US.