HA Shelly pro 3EM Electricity

[G0thm]

How can I add the power consumption for P1P2 to Home Assistant?
I have a Shelly Pro 3em that shows me the power consumption through the Shelly integration.
I just can't get the mqtt to run additionally.

Can anyone help me with this?

[jirkaherzig]

Hi,
I have got this integrated, not sure if correctly, but this is the way:
in shelly PRO3EM console, in Scripts, I have a script like this:

// set this to >0 then log is activ
let log = 0;

// set this to false to stop publishing on MQTT
let MQTTpublish = true;

//published variables
let lastPublishedMQTT_Total_Act_Power = "";


// query the MQTT prefix on startup
let SHELLY_ID = undefined;

///
Shelly.call("Mqtt.GetConfig", "", function(res, err_code, err_msg, ud) {
    SHELLY_ID = res["topic_prefix"];
});

///
function timerHandler(user_data) {
    let em = Shelly.getComponentStatus("em", 0);
    if (typeof em.total_act_power !== 'undefined') {

        // a act power
        let value = em.total_act_power.toFixed(1);
        if (value !== lastPublishedMQTT_Total_Act_Power) {
            MQTT.publish(
                "P1P2/P/meter/U/9/Electricity_Power",
                value,
                0,
                false
            );
            lastPublishedMQTT_Total_Act_Power = value;
            if (log > 0)
                print("Total_Act_Power: " + value);
        }       
    }
}

Timer.set(3000, true, timerHandler, null);

this will publish energy consumption to your MQTT broker to P1P2 topic.

For me, the "HC_Power Consumption_Heatpump" is changing over time.
Unfortunately, no P1P2 meters are working for me.

Maybe someone else will help.
Jirka

[Arnold-n]

Thanks for your script!

Does your system have any counters which are visible via Daikin's wall room thermostat? If so, a log during a manual action when entering that menu could be helpful.