Home Assistant Blueprint: Automate switch based on energy price

priceswitch.yaml

blueprint:
  name: Price Switch
  description: Switch appliance on and off based on electricity price
  domain: automation
  source_url: https://gist.github.com/Cougar/2f7f87ac2dbbe84d892d6928cda898bd
  input:
    electricity_price_sensor:
      name: Electricity price sensor
      description: Electricity price tracking sensor (¢/kWh)
      selector:
        entity:
          domain: sensor
      default: 'sensor.enduser_energy_price'
    target_switch:
      name: Switch
      description: The switch that needs to be automated
      selector:
        entity:
          domain: switch
    switch_on_price:
      name: Switch on price
      description: Switch on when price is below this treshold
      selector:
        number:
          mode: box
          min: 0
          max: 50
          step: 1
          unit_of_measurement: '¢'
      default: 5
    switch_off_price:
      name: Switch off price
      description: Switch off when price is above this treshold
      selector:
        number:
          mode: box
          min: 0
          max: 50
          step: 1
          unit_of_measurement: '¢'
      default: 10
    notify_device:
      name: Devices to notify
      description: Send change notification to this device
      selector:
        target:
          device:
            integration: mobile_app
    notification_message:
      name: Notification message
      description: You can use "{{ target_switch }}", "{{ old_price }}", "{{ new_price }}", "{{ switch_state }}" and "{{ new_state }}" variables
      default: Switch {{ target_switch }} {{ new_state }} after price change ({{ old_price }} → {{ new_price }})

variables:
  old_price: '{{ trigger.from_state.state }}'
  new_price: '{{ trigger.to_state.state }}'
  electricity_price_sensor: !input electricity_price_sensor
  price: '{{ states(electricity_price_sensor)|float(0.0) }}'
  switch_on_price: !input switch_on_price
  switch_off_price: !input switch_off_price
  target_switch: !input target_switch
  switch_state: '{{ states(target_switch) }}'
  new_state: '{% if (price|float) < (switch_on_price|float) %}on{% elif (price|float) > (switch_off_price|float) %}off{% else %}{{ switch_state }}{% endif %}'
  notify_device: !input notify_device
  notification_message: !input notification_message

trigger:
  - platform: state
    entity_id: !input electricity_price_sensor

condition:
  - condition: template
    value_template: '{{ switch_state != new_state }}'

action:
  - service: switch.turn_{{ new_state }}
    data: {}
    entity_id: !input target_switch
  - domain: mobile_app
    type: notify
    device_id: '{{ notify_device.device_id }}'
    message: '{{ notification_message }}'

mode: single