There are technology (reactor) demonstrations planned within the next 2-3 years, so not quite but very close. A lot of active R&D work going on right now for specific designs at a lot of companies.
So you admit they do not exist?
The technologies on which these reactor designs are based have been demonstrated previously. The specific designs are in progress and well on their way. AGR, EBR-II, and MSRE are examples.
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From how they argue, I get the impression that most of them are victims of astroturfing campaigns by the nuclear lobby tbh. The nuclear industry hates the idea to become redundant because of renewables, so they spread lies about being the solution to climate change. Like they ever gave any shits about the ecosystem, lol.
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Maybe those are the ones running the astroturfing campaigns?
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More or less directly for the nuclear lobby I would assume. Or did I somehow misinterpret your question?