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Comparison
Fusion Fuel vs Fission Fuel
Fusion runs on hydrogen isotopes from seawater with no enrichment or proliferation risk; fission runs on mined, enriched uranium with spent-fuel and safeguards burdens.
- Fusion fuel
- Deuterium (seawater) + bred ³He
- Fission fuel
- Mined, enriched uranium
- Proliferation
- Fusion: none / Fission: safeguarded
- Spent fuel
- Fusion: none / Fission: long-lived
The fuel cycles of fusion and fission are worlds apart, and much of fusion's advantage lives here.
| Dimension | Fusion (Kronos) / Fission |
|---|---|
| Fuel source | Deuterium from seawater + bred ³He / mined uranium |
| Processing | None / mining, milling, enrichment |
| Proliferation risk | None (no fissile material) / requires safeguards |
| Spent fuel | None / long-lived, hazardous for millennia |
| Supply security | Domestic, inexhaustible / mined and traded |
Fusion needs no mine, no enrichment plant, and produces no fissile material or long-lived spent fuel — its fuel is effectively inexhaustible and domestic. That's a fundamentally cleaner and more secure fuel story than fission's, and Kronos's low-neutron cycle keeps even the activated-waste side small.