Marathon Fusion

Component Supplier Fusion Technology Developer

Supply Chain Offerings: 1 Funding (Investment): 1 Funding (Nondilutive): 3 Publications: 2

Founding Year

2023

Location

San Francisco, California, United States

Website

www.marathonfusion.com

Marathon Fusion develops fuel cycle technologies for fusion machines. Their areas of interest include metal foil pumps, plasma centrifuges, and isotope transmutation.

Publications

Physics basis for the reference flat-top plasma scenario in the ST–E1 fusion power plant

Jul 10, 2026 • Nuclear Fusion

The impact of kinetic and global effects on ideal ballooning 2nd stable pedestals of conventional and low aspect-ratio tokamaks

Jul 1, 2026 • Nuclear Fusion

Supply Chain Offerings

Supply chain category

Direct Internal Recycling

Product offering

Direct Internal Recycling

Funding Received (Investment)

July 17, 2024

roundSeed

$5,900,000

Funders1517 Fund Climate Capital

+ 1 More

AnnouncementSeed

Funding Received (Nondilutive)

January 14, 2025

programVision OPEN 2024

$3,630,998

FundersAdvanced Research Projects Agency-Energy (ARPA-E)

AnnouncementVision OPEN 2024: Partial Ionization Plasma Centrifuge Enabling Differential Pumping for Fusion Energy

August 7, 2024

programINFUSE

FundersFusion Energy Sciences (FES)

AnnouncementINFUSE: Testing of Engineered Membranes in Fusion-Relevant Metal Foil Pumps

September 24, 2023

programCREATE

$449,065

FundersAdvanced Research Projects Agency-Energy (ARPA-E)

AnnouncementCREATE: Advanced Metal Foil Pumps and Integrated Test Environment for the Fusion Fuel Cycle