“The goal is to achieve ignition – a point at which the energy generated by the fusion process exceeds the total energy input.”

“The experiment, conducted on 8 August, fell just short of that mark; the input from the lasers was 1.9 megajoules [vs 1.3MJ output]. But it's still tremendously exciting, because according to the team's measurements, the fuel capsule absorbed over five times less energy than it generated in the fusion process.”

Good! Now we need a steady 5% surplus, then the surplus steadily transformed into electricity.

Extraordinary proof required.

The fuel itself had mass to begin with then energy was added so there's no mystery, just increased efficiency being achieved and reported.