solar_light.yaml

blueprint:
  name: Solar Light
  description: Change the colour of a lamp based on the amount of power being imported or exported from the
  domain: automation
  input:
    net_current_consumption:
      name: Net current consumption sensor
      description: Negative for exporting, positive for importing
      selector:
        entity:
          domain: sensor

    target_light:
      name: Light
      description: The light you wish to use as the indicator
      selector:
        target:
          entity:
            domain: light

trigger:
  - platform: state
    entity_id: !input net_current_consumption

action:
  - variables:
      spot_price: "{{ trigger.to_state.attributes.spot_per_kwh }}"
      customer_price: "{{ trigger.to_state.attributes.per_kwh }}"
      low_price: !input importing
      high_price: !input exporting

  - service: light.turn_on
    target: !input target_light
    data:
      color_name: >
        {% if net_current_consumption > 0 %}
          red
        {% if net_current_consumption <= 0 %}
          green