Re: Please allow 6 to 8 weeks for delivery
That comment on power factor you quote was mine. And I made the implicit assumption that the metering devices accurately measure current, voltage and phase angle at the supply to correctly calculate kWh. Power factor does affect domestic metering devices but they take it into consideration to produce your kWh units.
I've ready the full text of the study as I have an IEEE subscription. Domestic single phase electronic meters (the ones your energy supplier will install in your home) were tested and the following conclusion reached: The results can be summarized in one sentence: no deviation beyond the specification could be observed; no influence of interference due to interfering or distorted voltage, and no influence caused by interfering currents were observed. Thus, home smart meters do not exhibit the effects described in the article. Dang.
The study is instead looking at commercial premises 3-phase meters, and the influence of sites with non-linear, fast switching devices causing high levels of electromagnetic interference, the example given was a farm with a large solar array plus some motors using drives. For these 3-phase meters, they did not fare well under certain specific conditions, with the Hall-effect sensors under-reading and the Rogowski sensors over-reading. They did not fully identify the root cause but believe it was due to the test-setup causing current saturation in the sensor, which occured if sufficiently fast current pulses were fed to the meter.
So yeah, makes for great headlines, and indeed highlights a problem, but not one that affects the general public at large.