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> Nuclear isn't a good match for PV and wind, as those are cheaper when they're on. So you have a huge capital investment but only a low realized capacity factor.

That's the wrong conclusion. In a grid made of unreliables and nuclear power, electricity is worthless during the day and priceless at night. If you assume[^] cheap batteries, electricity is worthless in summer and priceless in winter.

[^] But remember, if you assume, you make an ASS out of U and ME.

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