Nuclear, even if we were happy to throw all the money we have at it, is not a climate solution because it can not be deployed quickly enough. In addition to its economic costs in terms of labor and materials, it has huge time costs, and it's now too late to try to build something that may or may not be able to scale. We have zero examples in the West of being able to build nuclear in a scaleable manner within the past 30 years. It's all failure after failure. And the only reason that any utility has tried again is 1) regulatory capture to put all the economic risk on ratepayers, and 2) intensive lobbying of utility executives to make the bad economic decision to try nuclear once again.
SMRs are literally the only hope for nuclear in the US, and even their best predictions don't look that great.