China is making great strides in renewables and investing in nuclear (and in electrification of transport). It can be energy independent in not too distant future.
India has geography for solar, and the human/industrial capability for nuclear.
Southern Europe can go solar as well.
Northern Europe has it tougher (except Norway, with its abundant hydro). Nuclear could work. Or long range DC cables from South Europe or North Africa (if ever Europe helps them to put their act together - not easy or fast, but definitely in their best interest).
Northern Europe, at least Scandinavia, is already at 90%+ non carbon electricity generation. (88-100%)
Central and Eastern Europe have it tougher.
This is already happening [1]. I think even an UK connection is in works.
[1] https://en.wikipedia.org/wiki/Spain-Morocco_interconnection