Electricity consumption Share of PV system

Third party integrations
1

Hello everyone,

I have a domestic hot water heat pump Stiebel Warmwasser-Wärmepumpe WWK 300 and a PV system.

Using evcc, I have integrated a Shelly 1 which switches on the heat pump when there is a PV surplus. This also works without any problems.

I have plugged a Plug S in front of the heat pump so that I can measure my electricity consumption.

Unfortunately, I can now only see how much electricity I consume, but not what comes from the PV system and what comes from the “socket”.

Is there a way to count the power consumption when the Shelly 1 is switched on (i.e. PV surplus). I could then calculate total consumption - PV surplus and thus have consumption from the “socket”.

Thanks for your help

Greetings Diver

2

You need to add another electricity meter

3

Hello Miwyf
Thank you for your reply.
What kind of electricity meter do I still need?
I have the “electricity meter” from Solaredge, which counts what comes from PV and what comes from the grid.

However, I have the Plug S, which also indicates how much electricity I have consumed. Now I thought it might be possible to create an “automation” that starts a second count when the Shelly1 is switched on by evcc.
Unfortunately, I am not familiar enough with yaml programming to be able to do this on my own. :slight_smile:
Maybe someone has already “tinkered” something like this for their whale box, because I would also like to implement this, but I thought I would start with the smaller Shelly first.
Then the go-E charger Gen3 wallbox would be next.

Thanks for your help.
Unfortunately, everything is full of snow at the moment, so I’m not even getting 1 watt from the PV system. :slight_smile:

Snowy greetings Diver

4

If you have an “electricity meter” from Solaredge, you don’t need another meter. Here is a yaml example you can refer to:

sensor:
  - platform: template
    sensors:
      energy3:
        friendly_name: "Energy3"
        value_template: "{{ states('sensor.energy1') | float - states('sensor.energy2') | float }}"
        unit_of_measurement: "kWh"
        device_class: energy
5

Hello Miwyf,
i tried it with this Sensor

Blockquote

sensor:

  • platform: template
    sensors:
    pv_ueberschuss_verbrauch:
    value_template: “{{ state_attr(‘switch.shelly_shsw_1_e8db84d27ec8’, ‘consumption’) }}”

Blockquote

and tried a automation like this:

automation:

"

  • alias: “PV-Überschuss-Verbrauch messen”
    trigger:
    - platform: state
    entity_id: switch.shelly_shsw_1_e8db84d27ec8
    to: “on”
    action:
    - service: sensor.update_state
    data:
    entity_id: sensor.pv_ueberschuss_verbrauch
    value: “{{ state_attr(‘switch.shelly_shsw_1_e8db84d27ec8’, ‘consumption’) }}”

Blockquote

but i always get this message:

Message malformed: extra keys not allowed @ data[‘automation’]

what do i wrong?

6

This switch.shelly_shsw_1_e8db84d27ec8 contains sensor data?

7

ok, sorry and what does this means? :frowning:

8

switch.shelly_shsw_1_e8db84d27ec8 Isn’t this a switch? Does it also contain some photovoltaic data?

9

Hello an a happy new year.
Sorry that i anwere just now, but Christmas and so on. you know. :slight_smile:
Oh man i got crazy with this automation.
I just wanted Homeassistant to count the power consumption of the Shelly plug-s when the Shelly 1 has the status “on”, but somehow I can’t get it to work.
Maybe someone can help me, I have tried the following.
alias: Stromzähler Warmwasser bei PV überschuss
trigger:

  • platform: template
    entity_id: switch.shelly_shsw_1_e8db84d27ec8
    state: “on”
    action:
  • service: homeassistant.update_state
    data:
    state: {{ state_attr(“sensor.stromzahler_warmepumpe_warmwasser”, “last_reading”) }}

than i get this error message:
Message malformed: extra keys not allowed @ data[‘entity_id’]

Thanks for your help
Diver