Fix to have evcc start with 1 phase charging in auto phase mode

[rafdev18]

EVCC always starts to charge with 3 phases in auto mode. This is not good for smaller solar panel installations as the power available might be below the 3.6 kW for many hours during the day.

When you plug in your car EVCC starts with 3 phases and needs a few minutes til it switches to 1 phase. During this time you consume grid energy.

I do run EVCC in home assistant and implemented the attached automation which solves this problem nicely. When I connect my car EVCC is switched into 1 phase charging mode and after 3 minutes towards auto phases. This works much nicer and avoids the grid loading when you start the car charge.

I know only interesting for a few here ... but I am really happy with the result :)

Automation code:

evcc fix to start with one phase and switch to auto phase after 3 minutes

avoiding net consumption when coming down from 11 kWh

• id: "evcc_start_1p"
  alias: Evcc start 1p
  trigger:
  platform: state
  entity_id: sensor.evcc_connected
  from: "false"
  to: "true"
  action:
  • service: mqtt.publish
    data:
    topic: "evcc/loadpoints/1/phases/set"
    payload: "1"
    qos: 0
    retain: false
  • delay:
    minutes: 3
  • service: mqtt.publish
    data:
    topic: "evcc/loadpoints/1/phases/set"
    payload: "0"
    qos: 0
    retain: false

[GrimmiMeloni]

EVCC always starts to charge with 3 phases in auto mode.

Assuming by "auto" you mean "pv" mode, this is not correct. Evcc simply starts the charge, and depending on the state of the hardware it will then scale phases up or down. Keep in mind, that your hardware could also influence the observed behavior, i.e. your charger could for example automatically switch to 3 phases by default whenever a vehicleis connected.

[rafdev18]

You can be right that my HW - an easee Wallbox might be the trouble maker and always start when phase mode is set in evcc to auto switching with 3 phase charging causing unneeded net consumption.

Several users posted in the past about this problem and even asked evcc to introduce a setting if auto phase switching starts with 1p or 3p. My little workaround works like a charm -

[andig]

EVCC always starts to charge with 3 phases in auto mode.

It doesn‘t afaia