Development
A private fusion prototype burns D-T fuel past 150 million degrees
Claim
Helion raised $465 million at a $15.5 billion valuation after its prototype, the first private machine to burn deuterium-tritium fuel, passed 150 million °C, while Antares achieved the first private non-light-water reactor criticality in the US in forty years.
Reported metric: 150M °C / $15.5B
Reporting date: (not necessarily the event date)
Sources
Attribution and reporting linked by this record; links do not imply independent verification.
- Welcome to June 5, 2026 (theinnermostloop.substack.com)
Knowledge graphopen in browser →
Reported in
Cite or correct this record
Suggest a correction — opens a GitHub draft for you to review and submit.