Private fusion machine hits 150 million degrees

Helion reported its Polaris prototype became the first private fusion machine to use deuterium and tritium fuel and reached 150 million degrees Celsius.

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Polaris fusion milestone · Helion

WHY THIS MATTERS

It is progress toward fusion power plants that could make clean electricity without long lived waste.

Our interpretation of possible significance, not a promised outcome.

What happened?

Helion reported its Polaris prototype became the first private fusion machine to use deuterium and tritium fuel and reached 150 million degrees Celsius.

What changed?

Helion said this beat its previous private industry record of 100 million degrees set by an earlier prototype.

What has been checked?

Company announcement

Helion gave no energy gain figures, and the results were not peer reviewed or measured by a third party.

Can I use it today?

This entry covers a research result. Consult the original publication for released code, data, access conditions and experimental limitations.

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Source materials checked Oct 7, 2026. Leapscope has not independently replicated this result.

Original announcement or research