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40% of US electricity is now emissions-free
(arstechnica.com)
This is a most excellent place for technology news and articles.
It does not make sense to compare the price of energy storage (lithium batteries), with the price for generating electricity (nuclear energy), or do you mean something else?
People have a hard-on about nuclear being "baseload" power and renewables being intermittent. Solar/wind plus batteries to add dispatchability is a valid comparison to nuclear if you only want to talk about baseload.