The United State Department of Transportation (DOT) is establishing 48 national electric vehicle charging corridors, which it’s saying cover nearly 25,000 miles, in 35 states.
I can’t find a map and am awaiting DOT response so I don’t know what, if any, New Hampshire coverage is involved. I’d guess that I-95 up the coast is a certainty, but otherwise who knows? I’m also awaiting details of type of charger and pricing, although I suspect those are yet to be worked out.