No one has even come close to Q=1 on D-T with magnetic confinement yet. The big result last year was “Q>1” on ICF when you ignore 99% of the energy used to power the lasers because it doesn’t go into the fuel. D-He3 requires 8x higher temperatures to reach the same reactivity, which both increases radiative losses and makes it harder to maintain enough density (and the reaction rate is proportional to density squared)

D-He3 is so much harder than D-T that they'd have to be commercially mass producing D-T reactors before I'd take any of their D-He3 plans seriously.

Before 2026, or by the end of 2026?

@jack I interpreted it as “before”, but I’m not sure that’s what Altman meant… it might be more likely that he meant “by the end of”.

@NcyRocks That sounds fine, as long as it's clear what we are using for this market. The close date matches, but I wasn't sure whether you actually set it or whether it was auto-generated.

@jack I think I set it, so we'll go with that.

"Will Helion achieve breakeven deuterium-helium-3 fusion by 2026?"