It’s usually an optional service you can sign up for. The electric Co
I had in CA had it. I had to pay $5 per month for a special meter and
electricity during “off peak” was cheaper than the normal rates BUT if
you used it during “peak” hours then it was more expensive than normal
rates.
So be sure to ask when peak hours are and be sure you can avoid running
dishwasher, washer, A/C during those hours. KarenMO