Most installations of electronic meters have been done in the past two to three years. It's easy enough to see if readings skyrocketed after the installation (mine didn't).
(I'm presuming electronic == smart)
(I'm presuming electronic == smart)
I've seen once little screw for bulbs it said on the box that it corrects wave so it's stable. It said that it extends life of bulbs. Not sure if it would help or not as the problem seems to be coming from appliances having chaotic usage wave patterns, but who knows maybe those work both ways, anybody knows?
The most expensive would of course be to put CT's on each circuit in the house.
Least expensive would be to source a meter for the main.