I think the main draw of using Nuclear for a national power grid is that it frees up fossil fuel resources that previously were essentially wasted on power generation for use in other sectors. With oil and such being eliminated from energy production, lots more is able to be used as fuel or in production of other goods like you mentioned. This is especially important because, while things like cars can be made electric or partially electric (i.e. Hybrid), many very important things cannot be, such as trains (for the most part, anyway), large ships, aircraft, and vitally, military vehicles such as tanks. In many of the aforementioned categories, nuclearization and electrification of these vehicles has either been tried and failed and is, without massive scientific breakthrough, completely impossible.

Obviously the ideal solutions would be to limit the usage of fossil fuels so that they are allocated to the most important consumers of such resources, using nuclear and other forms of power where possible, and improving public services so things like cars are not necessary for most people, as well as researching alternative fuel sources like synthetic fuels. However this would require significant restructuring and coordination that ZOGs are both incapable of and unwilling to do for numerous reasons, and would be a relatively low priority for any nascent Third Positionist/Dissident Right nations that arise in the future, as more pressing matters would certainly be on their plate.