LPPFusion Chief Scientist Eric Lerner compares and ranks the results of all the world’s leading fusion efforts, using three objective yardsticks. Comparing the ratio of fusion energy out to total energy into the device, LPPFusion’s, $5-million-dollar Focus Fusion-1 (FF-1) device comes in a close second to the largest functioning tokamak device, the Joint European Torus (JET), which has cost nearly a thousand times more.

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