So . . . I was sitting here wondering what the minimum power draw of a house could be. And that made me wonder how much power does a Smart Meter pull and who pays for it.
Of course, in the end, it's all passed down to the user . . .
The old mechanical "spinning disc" type ones take about 2 watts for the "voltage" coil, and up to about the same again for the current coil (although that one varies with load, obviously).
The voltage coil is generally on the "supply" side, not the "metered" side, so you don't directly pay for that. (Of course, it goes into their overhead costs, which you all pay, so you still pay it - just not "directly")
The newer "smart" meters I've seen take less than the mechanical ones, although they may have brief periods where they take more (while sending data, for example)