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Why compact fusion?
High-temperature superconductors let a small, high-field machine reach reactor conditions — and smaller means cheaper, faster to build, and manufacturable at fleet scale.
Compactness is the thesis of modern private fusion, and it flows directly from HTS and power density. See can fusion scale fast enough?
Questions & answers
Why build compact fusion machines instead of big ones?
Because size drives cost and speed. High-temperature superconductors let a much smaller, higher-field machine reach the same fusion conditions as a large low-field one — and a smaller machine is cheaper to build, faster to iterate, and, crucially, manufacturable as a repeatable product rather than a one-off megaproject.
What made compact fusion possible?
REBCO high-temperature superconductor. Because fusion power density scales with the fourth power of magnetic field, the high fields HTS enables shrink the machine dramatically. It's the enabling technology behind the whole modern compact-fusion wave.
How does Kronos embody this?
MetroVolt targets gigawatt-class fusion power from a 5.75 m machine using a 24.6 T field — compact for its output, and designed as a manufacturable product to scale via Wright's law.