2. Nuclear waste is not as trivial as you make it sound, especially if you consider the length of time it has to be managed.
However, even present-day renewable technology can apparently provide 80% of project US energy demand of 2050: https://knowledge.wharton.upenn.edu/article/can-the-world-ru... ; and expected to provide 70% of Denmark's demand by next year already (same article) - despite the non-uniform output of Solar and of Wind. And technology marches on.
3. If countries link up their grids, there would be some mitigation of the non-uniformity of Solar and Wind output.
4. Energy storage technology.
5. CO_2 is a big issue. But non-renewable energy sources which run the risk of causing nuclear holocausts - while not entirely out of the question should be considered only to the extent renewable sources cannot be exploited instead.
6. IIANM One can also significantly decrease the amount of CO_2 emissions from fossil-fuel-fired plants through different process technology. It's not clear to me that between that and construction of nuclear plants, the latter wins out (although I don't have a strong opinion on the matter).
2. Nuclear waste is not as trivial as you make it sound, especially if you consider the length of time it has to be managed.
However, even present-day renewable technology can apparently provide 80% of project US energy demand of 2050: https://knowledge.wharton.upenn.edu/article/can-the-world-ru... ; and expected to provide 70% of Denmark's demand by next year already (same article) - despite the non-uniform output of Solar and of Wind. And technology marches on.
3. If countries link up their grids, there would be some mitigation of the non-uniformity of Solar and Wind output.
4. Energy storage technology.
5. CO_2 is a big issue. But non-renewable energy sources which run the risk of causing nuclear holocausts - while not entirely out of the question should be considered only to the extent renewable sources cannot be exploited instead.
6. IIANM One can also significantly decrease the amount of CO_2 emissions from fossil-fuel-fired plants through different process technology. It's not clear to me that between that and construction of nuclear plants, the latter wins out (although I don't have a strong opinion on the matter).