> Some reactors JT-60 have been energy positive[3] but are not yet self sustaining. Nitpick: I don't believe the JT-60 has actually gone energy positive. They

> Some reactors JT-60 have been energy positive[3] but are not yet self sustaining. Nitpick: I don't believe the JT-60 has actually gone energy positive. They achieved a point where they would be power positive if they had been able to use a 1:1 ratio of D-T fuel instead of their D-D fuel but handling D-T fuel is very complicated and the JT-60 facility doesn't have those capabilities.