[gottorf]

> cheap nuclear is a fallacy that many fall for (Jevons paradox)

Jevons paradox does not apply here. All of human progress has basically been about being able to use more energy per capita. You're right that people will always need more energy -- if they want to progress.

A call for higher marginal energy prices effectively means that you're declaring that this is as good as humanity will ever be, and nobody would need anything better (in the sense that "640KB ought to be enough").