Does anyone know whether nuclear fusion energy gain numbers contain energy requirements for keeping the magnets cooled and the vacuum at high quality?
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Not really, counter intuitively. If you need aux heating to get to ignition, then all you are doing is having that aux heating sitting around doing nothing, and capex and finance costs more than the electricity consumed. The whole thing is driven hugely by capex, not opex...
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Which is ultimately why I got out... I don’t think fusions technical merits translate economically. You can’t build economically competitive 4th gen fission because it’s a long term bet on interest rates, electricity prices and your plant lifetime...
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