Nuclear reactors across the US and Europe have been a complete project management omnishambles and consequently have been massively costly and massively late.
SMRs are vapourware and are similarly economically uncompetitive.
Just build solar, wind, and batteries, and we'll worry about solving for the last 15% of electricity demand when that is actually a live problem (for which there are solutions that don't involve nuclear power and don't rely on magic beans being invented).