[SoftTalker]

Exactly the "too cheap to meter" claims that were made about fission energy.

The problem is that though the marginal cost of the next watt-hour of electricity may be low you still have to pay the very real (and likely huge) costs of constructing and maintaining the reactors and generating plant. Investors will need to earn a return; the bonds payments will need to be made.

[kdamica]

Of course there are still costs; the point is that we would be able to generate more and more energy without increasing carbon emissions.

[SoftTalker]

We have been able to do that that with fission reactors for the last 60 years, but we mostly don't.