|How will fusion make electricity?|
The fusion of deuterium and tritium creates a charged particle, helium, which in magnetic confinement fusion can be retained in the plasma to keep it hot. It also produces a neutron which can be slowed down in surrounding materials to give up its energy. This energy can then be removed by water or helium coolant and led to a steam or gas turbogenerator to produce electricity. This process is typically 35% or 40% efficient respectively, the remaining energy being rejected as heat usually through cooling towers as in conventional power generation.
It could be that in future, with other fusion reactions, confinement schemes, or with laser fusion, direct conversion of the energies of charged particles produced in fusion may become possible. This would make the overall process more efficient, if the additional engineering requirements can be managed.