Helium-3 sits on both sides of the family ledger: it is the fuel the burners must consume and the co-product the breeder quietly makes. Understanding the fuel cycle means understanding that one machine's output is another's input.
The burners run on a D-3He mix and consume helium-3 at commercial scale (28-54 kg/yr per unit). Hyperion produces helium-3 two ways: as the decay product of the tritium it breeds, and as a direct D-D breeding channel in the plasma. The breeder's decade of production is what seeds the helium-3 the burners will need.
This coupling is the strategic core of the programme. It means the burners' fuel dependency is not purely external — part of it is manufactured in-house by the breeder — while the remainder is stated honestly as a supply bet. The cycle turns a weakness into a sequence.
| Helium-3 role (burners) | fuel (consumed) |
| Helium-3 role (breeder) | co-product (made) |
| Breeder sources | tritium decay + D-D breeding |
| Link | breeder output seeds burner input |
| Remainder | external supply, stated as a bet |