Power company can turn off your power even if you have a dumb meter. Since they have to come out to read the dumb meter anyway, it's not that much additional effort. Plus it could be more of a pain to get it turned back on.
Not sure how it is out there, but here PG&E has to give notice that it is going to turn off the power... so me missing a payment by 2 days or 10 days or whatever isn't enough... they have to send me a past due notice, stating that if the payment isn't received by x date then they will turn off power on y date. No difference if it is a smart meter or a dumb meter in that case. If they turn off power without doing the notice, they open themselves up for a lawsuit.
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