A little fact checking here:
Nuclear's share of global generation (kwh) is decreasing. Yes, there are a number of nuclear plants under construction in Russia, China and India. There are 5 being built in the US. Nuclear;s share of global generation declines over time. It does not increase.
New large nuclear plants require significant transmission enhancements in most US congested transmission networks. No credible system planner who will tell you there is no need for massive, and I mean massive, transmission infrastructure to accommodate a GW or two of new generation (regardless of technology) anywhere in most of the US grids.
The jury is out on whether nuclear plant decommissioning is paid for. It depends on the plant, although real data is now available indicating that it is much more costly than present fund target amounts. Vermont Yankee, for example, has $500 million in its fund. Recent experience decommissioning plants of that age and size indicate at least a billion is necessary. Go ask Exelon how adequate the funds are.
Nuclear is second only to oil as the most subsidized form of energy on the planet. Can a wind farm limit is liability to one third the capital cost of the installation if it causes harm, leaving the remainder to the federal government? Do solar manufacturers make free use of government facilities that cost the taxpayers billions? Over the last 25 years the biggest recipient of federal R&D funds was nuclear, followed by fossil. Renewables are a distant third. Combine new nuclear PTC with CWIP in rate base and convert that to cents/kwh and then compare. But stop! Comparing the two makes no sense. See next comment.
Until large scale economic energy storage becomes available, anyone who compares large nuclear plants- or any other form of central baseloaded generation - to renewables is advertising that they don't understand how electricity delivery systems function. When you can adequately aggregate intermittent generation through storage, then maybe a comparison could be made, as long as the incremental grid infrastructure is included in the equation. The question, of course, is whether the central generation model is still viable in all regions.