Some key insights from the article:
Basically, what they did was to look at how much batteries would be needed in a given area to provide constant power supply at least 97% of the time, and the calculate the costs of that solar+battery setup compared to coal and nuclear.
Not where I live. By far. Not to mention that it doesn’t even cover winter months at all. Battery or no battery it doesn’t cover even the usage most of the time when the sun is out, let alone charge the battery.
Edit: care to explain the downvote?