Sadly, while in Germany I could insert a module to allow consumer monitoring the ESB have security tagged that slot.
See page 10 of:
"In OMNIPOWER® single-phase meter, it is possible to mount a CCC module. The module can be used for communication and data exchange with smart home products such as energy displays and external relays. The CCC module is mounted without using tools or breaking the seal of the meter. The mounting may be done by e.g. the consumer himself."
However, there's an IR window that should allow serial comms to the unit. https://wiki.hal9k.dk/projects/kamstrup
I've bought one of these kits and should be able to attached magnetically to the smart meter.
And read basic usage data from a NodeMCU and post to MQTT