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Nuclear energy is more expensive than renewables, CSIRO report finds
(www.abc.net.au)
This is a most excellent place for technology news and articles.
There are tons of options for that, mainly energy storage such as batteries, hydro, and green hydrogen. Nuclear is not needed and too expensive among other things.
Hydo is limited in where it can be used and where it can be used if often already is. Batteries can't yet provide a grid level base load. I don't know much about green hydrogen but there's usually a loss of energy when converting from one medium to another.