Re: Modern, safe nuclear power as a baseload / backstop is a possibility
It's utterly essential, and let's not kid ourselves otherwise. There is absolutely no way at all that renewables could provide the kind of steady baseload most countries need to operate normally.
Even technical issues of ultra-long-distance transmission could be solved, we're still talking about an unprecedented level of international cooperation to ensure the power flows unhindered. Just imagine the political leverage over countries whose power flows through yours... no nation would ever submit to such risks.
The only realistic option is local generation, perhaps trading across immediate borders with neighbouring countries. Therefore that local generation needs to be constant, reliable and fully adequate for current and future needs, lest the natives start getting tetchy after a few weeks of rolling blackouts and being unable to wash their laundry or take a shower when they dare to want to (the end game for so-called smart meters... far cheaper and easier to get the public to pay through increased bills for their own personal remote off switches than have the utilities actually build enough generating capacity).