[import]

For people who are interested in this, there is an esp32 component (and works awesome) https://esphome.io/components/sensor/dsmr/

There are also several cheap hardware sold with p1 port connection and home assistant integration.

[robinvdvleuten]

If you are really into the hardware stuff, you can combine this package quite easily with Elixir’s nerves and make your own esp32 p1 reader yourself!