Home Assistant script setting the wallbox and smart switch combination for the target charging power

EMS - EV set wallbox power.yaml

alias: EMS - EV set wallbox power 🚗
fields:
  new_value:
    name: Watts
    required: true
    description: |
      Watts (0-1400 = off, 1400-3840 = 1f, 4320-11520+ = 3f)
    example: 2400
    selector:
      number:
        min: 0
        max: 11520
        unit_of_measurement: Watt
        step: 10
sequence:
  - if:
      - condition: state
        entity_id: sensor.wallbox_phases
        state: "0"
    then:
      - service: switch.turn_on
        data: {}
        target:
          entity_id:
            - switch.wallbox_l1
      - delay: "00:00:10"
  - alias: Turn off charging if small power
    if:
      - condition: template
        value_template: >-
          {{ (new_value < 1600 and
          is_state('switch.wallbox_pause_resume','off')) or (new_value < 1400)
          }}
        alias: Less than minimal power
    then:
      - if:
          - condition: template
            value_template: "{{ is_state('switch.wallbox_pause_resume','on') }}"
            alias: Wallbox is on
        then:
          - service: switch.turn_off
            data: {}
            target:
              entity_id:
                - switch.wallbox_pause_resume
      - stop: ""
  - variables:
      current_phases: "{{ states('sensor.wallbox_phases') | int(0) }}"
      new_phases: |-
        {%if is_state('timer.wallbox_phases_changed','idle') %}
          {%if (current_phases == 3 and new_value >= 4000) or new_value >= 5000 %}
            3
          {% elif (current_phases == 2 and new_value >= 2400) or new_value >= 2500
          %}
            2
          {% else %}
            1
          {% endif %}
        {% else %}
          {{ current_phases }}
        {% endif %}
    alias: >-
      Define variables current_phases and new_phases (elif second condition
      reduced from 3600 to 2500 W)
  - if:
      - condition: template
        value_template: "{{ new_phases != current_phases }}"
    then:
      - if:
          - condition: state
            entity_id: switch.wallbox_pause_resume
            state: "on"
        then:
          - service: switch.turn_off
            alias: Stop charging
            data: {}
            target:
              entity_id:
                - switch.wallbox_pause_resume
      - service: number.set_value
        target:
          entity_id: number.wallbox_maximum_charging_current
        data:
          value: |-
            {{ max(6,min(16,(new_value / 240 / new_phases |
                        int(1)) | round(0) )) }}          
        alias: Set the new charging current before turning wallbox off
      - delay: "00:00:05"
      - service: switch.turn_off
        data: {}
        target:
          entity_id:
            - switch.wallbox_l1
            - switch.wallbox_l2
            - switch.wallbox_l3
      - delay: "00:00:05"
      - choose:
          - conditions:
              - condition: template
                value_template: "{{ new_phases == 3 }}"
            sequence:
              - service: switch.turn_on
                data: {}
                target:
                  entity_id:
                    - switch.wallbox_l1
                    - switch.wallbox_l2
                    - switch.wallbox_l3
          - conditions:
              - condition: template
                value_template: "{{ new_phases == 2 }}"
            sequence:
              - service: switch.turn_on
                data: {}
                target:
                  entity_id:
                    - switch.wallbox_l1
                    - switch.wallbox_l2
        default:
          - service: switch.turn_on
            data: {}
            target:
              entity_id:
                - switch.wallbox_l1
      - service: timer.start
        data: {}
        target:
          entity_id:
            - timer.wallbox_phases_changed
      - delay: "00:00:15"
    alias: Switch between 1, 2f and 3f
  - variables:
      max_current: >-
        {{ iif(is_state('sensor.wallbox_phases','3') or
        states('input_select.ev_charging_mode') != 'Solar'
        ,16,iif(is_state('sensor.wallbox_phases','2'),12,10)) }}
      charging_current: >-
        {{ max(6,min(max_current,(new_value / 240 /
        states('sensor.wallbox_phases') | int(1)) | round(0) )) }}
  - if:
      - condition: template
        value_template: >-
          {{ states('number.wallbox_maximum_charging_current') | int(0) !=
          charging_current  }}
        alias: New charging current different
    then:
      - service: number.set_value
        target:
          entity_id: number.wallbox_maximum_charging_current
        data:
          value: "{{ charging_current }}"
        alias: Set charging current
  - if:
      - condition: state
        entity_id: switch.wallbox_pause_resume
        state: "off"
    then:
      - delay: "00:00:20"
      - service: timer.start
        data: {}
        target:
          entity_id:
            - timer.ev_charging_triggered
      - service: switch.turn_on
        alias: Start charging
        data: {}
        target:
          entity_id:
            - switch.wallbox_pause_resume
  - service: automation.trigger
    alias: >-
      Set the invertor mode to prevent charging from backup when power == max
      and PV output < 11kW
    data:
      skip_condition: true
    target:
      entity_id: automation.handle_battery_charging_mode_ev_meteoalarm
    enabled: true
mode: queued
icon: mdi:ev-plug-ccs2
max: 3