True, it’s not that simple; you’re absolutely right. But the problems revolve more around capital than around technology.
Energy storage is effectively a solved problem at grid scale. If you’re in flatland or an arid environment (and thus can’t use 19th century Tesla type pumped storage) you can get a 100MW battery pack set up in less than 100 days, and clear a profit on it in less than a year. You can even spot batteries all over the place, in waste land left by the death of American factories for example, and thus extend the life of existing, undersized grids.
EDIT: In case you haven’t seen my many posts on the subject, I personally am an advocate of carbon-neutral sustainable methane, which is the most practical and socially responsible energy future I can see for the USA. I see wind and solar as adjuncts to that, not as primary energy sources.
EDIT2: I can’t reply to your post below due to the topic closing, but I did not ever say “storage is so cheap and widely available” I said it is readily available and quite profitable to implement, which is provably true. I have also made no reference to the price of electricity in European countries although I suspect the regulatory differences between those countries and the USA are the primary differentiators of their respective energy costs (the USA actively subsidizes nuclear fission with tax dollars, for example, and allows nuclear plants to disobey decommissioning setaside rules .
