Most people who have itron meters don’t have actual smart meters, but AMR-enabled meters. These are basically “dumb” meters with an add-on transmitter that broadcasts the serial number and usage detail with about a 5 minute granularity, if somebody happens to be listening when the broadcast goes out.
The AMR meters transmit without encryption on public ISM frequencies, do not receive commands and can’t remotely turn off your electricity. These also do not in of themselves enable time-of-day or demand billing.
There is an open source project to decode AMR transmissions.. The most common models used in the USA look like this:
