Disable solar panels when export tariff is negative

switch_soloar_production_on_energy_tarrif.yaml

blueprint:
  name: Disable switch when export tariff is negative
  description: >
    Turns a switch off when the export tariff goes below 0, and back on
    when the export tariff is 0 or higher.
  domain: automation

  input:
    export_tariff_entity:
      name: Export tariff entity
      description: Sensor containing the current export tariff / feed-in price.
      selector:
        entity:
          domain: sensor

    controlled_switch:
      name: Switch
      description: Switch to turn off when the export tariff is negative.
      selector:
        entity:
          domain: switch

trigger:
  - platform: state
    entity_id: !input export_tariff_entity

variables:
  export_tariff_entity: !input export_tariff_entity
  controlled_switch: !input controlled_switch
  export_price: "{{ states(export_tariff_entity) | float(none) }}"

condition:
  - condition: template
    value_template: "{{ export_price is not none }}"

action:
  - choose:
      - conditions:
          - condition: template
            value_template: "{{ export_price < 0 }}"
        sequence:
          - service: switch.turn_off
            target:
              entity_id: !input controlled_switch

      - conditions:
          - condition: template
            value_template: "{{ export_price >= 0 }}"
        sequence:
          - service: switch.turn_on
            target:
              entity_id: !input controlled_switch

mode: single