Dave W wrote:

Steve Walker wrote:

http://www.theregister.co.uk/2017/03...ers_prove_dim/

That website says that a 'Rogowski Coil' is used to measure the current, and
gives a link to a description of this

That seems the sort of clip-on sensor from devices like the Owl or
CurrentCost. In an electronic meter (be it smart or dumb) I'd have
thought a current shunt would be more likely, as it's already sitting
between the incomer and the CU?

I'd imagine the frequency of sampling in order to send volts*amps to see
the power drawn by "odd shaped" loads like SMPSUs and dimmers and
integrate it properly to register energy is where the report found
weaknesses.