Water and Fusion
Thermal power plants use water for cooling; we treat water draw as a real constraint and a design choice, not an afterthought.
Water is not free
Most thermal power plants — fossil, fission, and thermal fusion alike — reject heat to the environment, and many do so using water. In water-stressed regions this is a genuine environmental constraint. Any honest clean-energy program has to name its water demand rather than assume it away.
Design choices affect the draw
- Cooling method: once-through, wet-tower, dry, or hybrid — each trades water for efficiency and land
- Siting: coastal and industrial sites change what water is available and at what ecological cost
- The burner's direct energy conversion converts part of the output without a full thermal cycle, which can reduce the heat that must be rejected
The burner (Aegis / MetroVolt) uses D-3He with a direct-energy-conversion stage, so a portion of its output bypasses the steam cycle. That structurally reduces the thermal load compared with a purely thermal machine of the same output, though it does not eliminate cooling needs. The breeder (Hyperion) is a thermal machine and would follow conventional thermal-plant water practice.
We report no plant water figures, because no plant exists. The commitment here is to treat water as a first-class constraint in siting and design — part of stewardship as engineering.