Fuel Logistics
Because the fuel mass is tiny and partly bred on site, moving and storing fusion fuel is a small-scale operation.
Small mass, simple logistics
A fusion plant's annual fuel throughput is measured in kilograms, not the millions of tonnes a fossil plant burns. Deuterium can be produced near the plant from water, and tritium is bred internally. What must be handled externally is small in quantity, which makes fuel logistics a modest activity rather than a continuous heavy-transport operation.
What still requires care
Small quantity does not mean no handling. Tritium is radioactive and mobile, so it is contained, accounted for, and recovered rather than released. Deuterium and helium-3 are stable and benign. The logistics challenge is precision and containment for tritium, not the tonnage that dominates conventional fuel supply.
- Annual fuel mass is on the order of kilograms
- Deuterium is produced locally from water
- Tritium is bred and recovered inside the plant
- Helium-3 and deuterium are stable and easy to store
Reserves are easy to hold
A small fuel mass means even a long operating reserve occupies little space, reinforcing the security-through-abundance argument. See energy security and fuel storage and handling.
Precision replaces tonnage
The logistics challenge of fusion fuel is not scale but care: the quantities are tiny, so the work shifts from moving mass to containing and accounting for a small, radioactive tritium inventory. That is a fundamentally more tractable problem than a continuous heavy-transport chain. The stable components, deuterium and helium-3, are handled like ordinary industrial gases, adding little burden.