Which fusion news this week is real progress — and which is just a claim?

General Fusion has a measured milestone, Type One has funding, and ENN's hydrogen-boron result remains an unverified company claim.

Rank the news by evidence. Measured progress: General Fusion says its LM26 machine heated electrons to 1.1 keV, about 12.6 million °C, in a magnetized-target compression experiment measured with UKAEA co-authors using Thomson scattering; a paper is being submitted for peer review. Real financing: Type One Energy raised a $200 million Series B for its stellarator program, Infinity One prototype, and a proposed 400 MWe plant at TVA’s Bull Run site—money that funds engineering, not proof of net power.

Unverified company claim: ENN says its EXL-50U spherical torus sustained more than 100 million hydrogen-boron reactions per second, but no independent lab has confirmed it. Independent replication and peer review matter because fusion measurements are difficult, companies choose what to disclose, and a hot plasma or reaction count is still far from a reliable power plant.