I have had solar on the roof for quite a few years. I have had 3 meters since I started. The original old one at the start of my solar installation, a new one which was not smart ?? and then when the Gov bought in the current (soon to finish) scheme I had to fit a new smart one. Only the last one I had to pay for the installation.
The last meter has facility for reading the home usage from the grid and the exported power to the grid. It also has time of use programing for the three metering schedules, peak, shoulder and low rates. The same inverter continued to operate through all this and still works the same. The smart meter is read by the company by a wireless reader but the readings are not able to be interperated by me the owner !! How stupid is that but what would the owner need to know about what is happening
Perhaps newer ones may be more revealing. There are readouts on the face but are not directly readable !
Just for your information my old meter board was considered suspect at the time by some contractors who would not do the install, but the local energy supplier came and inspected it and pronounced it OK for the new smart meter to be installed and did the installation also. My house is 100 years old and also has a flat with additional old metering installed.