Tokamak Energy
Fusion · United Kingdom · Founded 2009 · private
Tokamak Energy's Demo4 magnet system hit 11.8 tesla in November 2025 (the first complete high-temperature superconducting magnet set to reach fusion-power-plant field strengths) and its ST40 tokamak then pushed to 1 MA of plasma current.
The record
5 figures · 2 rounds · 8 backers · 5 feed items
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