All nuclear plants are expensive at this point. Until you get modularized reactors that don't face political/public backlash, you'll not see many nuclear facilities built outside of China. Even the nuclear plants we have built in the USA, they are expensive to maintain but provide carbon-free energy, so some true climate hawks are for subsidizing them. As far as new-builds go, look at the absolutely terrible debacle in South Carolina, where the project will costs billions extra and all of the extra comes from the rate payers, not from those who ignorantly assumed they'd be able to pull off a cost-effective nuclear plant today.

Not totally carbon free. Mining uranium still emits carbon, so too the rest if the fuel cycle. It certainly is very low carbon.

What I meant with my comment is I suspect they don't consider solar seriously either, it might just be a PR issue. 3% in 12 years is seriously not much.