I question the rigor of this reporting. I read the story, and it's a series of "on the other hand" setups that generally tells you you don't have a story on your hands.
Basically:
Is "AI" cheaper? Depends. Does it have wider reach? Depends. Is it more effective? ...
You see where this is going. Down that road lies conjecture and anecdote.
Very near term, not bad. I have a bed in fixed housing for the night with my house batteries charging off mains ahead of the first major cold snap of the year. Beyond that is another question.