Needham: A 400MW fusion plant runs for life on half a room of deuterium
Rick Needham · The tape that led to a fusion breakthrough · Jun 18, 2025 · at 41:43
Rick Needham, CCO of Commonwealth Fusion Systems, explains the energy density and fuel requirements of fusion power plants to an audience at Transition AI.
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“To fuel a 400 megawatt power plant would use, like, gas canisters of deuterium that fill up less than half this room, and then you shut the door. It's fueled for life. There's no fuel input into the plant beyond that”
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