Nuclear has gone the other direction. Nuclear power is more expensive now than it was when it began, and is only getting more expensive.
Ask why? don't just stay with oil companies PR talk points. Nuclear is expensive because innovation has been artificially stifled. A huge part of this, is the insistence to forbid newer designs and more modern improvements, and instead force new plants to use old technologies and models that rely on on-site bespoke construction, as well as arcane and arbitrary administrative processes. Nuclear power is expensive (in the US), because it was made expensive by refusing it all the factors that typically reduce costs of technologies. Nuclear power never got to take advantage of the things that made solar and wind power cheaper, because oil companies lobbied with a shit ton of money to prevent it.
It doesn't matter though. Nuclear power could've help us survive climate change…40 years ago. It's too late now anyways. Even if we covered the whole planet with solar power and stopped every single combustion engine in existence, we are already on the way to living in a hellscape. We must focus on survival of the species now.
Your ape's first anthropogenic climate disaster.