I don't know, but I doubt it, and what you're stating is essentially the opposite, fossil fuels are far more energy dense than any other form of energy, you can't run long haul diesel trucks on batteries, not without an insane network of battery swap stations. The grid infrastructure alone needs to grow at least 4x to manage this.

I can't find the source, but it was in a video presentation by Kevin Anderson, a senior research fellow at the Tyndall Centre for Climate Change Research.

400 nuclear plants isn't actually that many in terms of numbers, but constructing them is an enormous task.