Re: RET plan
The CO2 emissions from a Coal vs Nuclear powerstation over their lifetimes are orders of magnitude in difference. Don't forget, you have to build and decommission a coal fired power station too. Even if processing nuclear fuel produces CO2 you are only looking at a few tonnes a year as opposed to hundreds of thousands of tonnes of coal per year.
This chart shows overall lifecycle emissions for most common forms of power generation:
In addition, burning coal pumps radioative particles into the atmosphere:
We are not in any danger of running out of Uranium any time soon. It would make sense to use this as an interim step for low CO2 baseload generation until a better option comes along (renewables with efficient storage, thorium reactors, depleted uranium reactors, fusion, whatever).