John, thanks for that summary. In conclusion, we are some way off from getting an open source zigbee connection to the SMETS2 meters?
It seems that someone way back decided to put zigbee into the spec, but the manufacturers have done nothing to make this accessible. I can plug in a £20 smart plug and start reading power flow instantly over a zigbee link, but for a £420 smart meter that isn’t the case.
In July 2019, on this thread, Ben Aylott estimated £150K to develop software to access SMETS2, which suggests there is something very wrong with SMET2.
If a home owner were to use software to access their smart meter, would they need some certification?
As with a lot of IoT, there seems to be a trend to force users to go via cloud links to get their own data. This can be access via “n3rgy”. Does this provide semi “Real-Time” data?
Meanwhile, the OEM EmonTX is quick to install and reads all this data without hassle. Are we stuck with that for the next decade?