Italian Open Meter 2.0 and Chain 2 protocol

Hi all,
I just read something about the possibility, in Italy, to read values directly from the power meter using the “Chain 2” communication protocol.

For what I can see, it is still experimental, but some companies are already selling a domestic device able to talk to a smartphone app about energy consumption, real-time energy draw, alerting when the drawn power exceeds the maximum contractualized power.
Any italian here tried to use those new devices and integrate with Home Assistant?
The company “MAC Srl” is publishing the data sheets of two products, a plug device and a DIN rail device, that seem interesting:

They support Wi-Fi and BLE, MQTT, Websocket, REST API…

Anyone has experimented those devices?

Lorenzo

You need to be an “authenticated” company/entity to have access to the Chain 2 specs and be able to read the values from the Open Meter counter.
There is an Italian company that sells a device able to do so and that can be integrated into HA:

https://www.alfabysinapsi.it/home-assistant/

I can confirm Alfa works pretty well! I have been using it to monitor my Meter for the last 12 months, in both directions (I have PV)

Do you have the Alfa device integrated in Home Assistant?

– EDIT
Dumb question, I just opened the link posted by @110hs and there are configuration snippets there.

Good to know, thanks!

Any news on this topic? Is the alfa device the only purchasable one to do this?

The https://www.chain2gate.it/ site I cited above also shows a final product but I don’t know if it is available to buy.

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No, not directly purchasable. I think you should contact them first.

Is anybody in Italy using chain2 protocol for the energy dashboard?
I get it and it’s really working good with the app Afa, but i need help to use the data from chain2 protocol into the energy dashboard…

I’m planning to use it. And i think reading data via modbus (using the suggested config from the official web site) would work ok with the energy dashboard.
alfabysinapsi.it/wp-content/uploads/2025/configuration.yaml

I already installed it and it’s working good. The only thing i still don’t understand is what these sensors do and what is their meaning:

      - name: Pot Att Prel Quart Media
        device_class: power
        unit_of_measurement: W
        state_class: measurement
        data_type: uint16
        address: 9
      - name: Pot Att Imm Quart Media
        device_class: power
        unit_of_measurement: W
        state_class: measurement
        data_type: uint16
        address: 19

I think is the mean value in last 15 min

There is an integration available from HACS.
I have tri-phase system with solar panels and batteries. I tried using it and it has an issue, when the batteries are charging, Alfa looses the connection with the power meter (contatore). I assume there is an interference on the eletrical network when batteries are using energy produced by solar panels. Just an info for those who plan to use it.

Which is this integration?
Actually i am using modbus as Alfa adviced…

alexdelprete/ha-sinapsi-alfa: HA Custom Component for Sinapsi Alfa energy monitoring device

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Thanks, already installed, configured and working… only little problems getting in frontend values of the F1,F2,F3 tariffs…