It's not a lie, you just failed to get the point:

Assume, for the sake of the argument, that you have a power plant that always works at 100% capacity and cannot be shut off. To provide energy security, you would have to budget capacity to account for highest possible demand. But if you do so, you will over-produce electricity most of the time, and there are economic incentives against doing so.

> somehow you blame nuclear

I don't blame nuclear energy production, I blame an over-reliance on nuclear energy production.