At least the ones I have seen are not. I am able to read the all the power meters in my building with a cheap USB SDR and this software. https://github.com/bem

At least the ones I have seen are not. I am able to read the all the power meters in my building with a cheap USB SDR and this software. https://github.com/bemasher/rtlamr https://github.com/bemasher/rtlamr I have not gotten around to figuring out which one is mine or a good way to system to store/display the data but I certainly can read the date. In the grand scheme of things it is a minor to medium security flaw, power usage could be used to infer which houses contain valuable items and when people are home. I'd say medium at most since a lot of other things Visible curbside indicate this as well (lights, cars in the driveway, etc.). On the other hand, electronics are pretty efficient. A wealthy house with all the lights on is still using less electricity than a small apartment using an electric stove. But I guess if you were really interested in stealing electric cars then it would be really useful.