Home Assistant automation blueprint to perform actions when a device starts and stops as detected by a power sensor

appliance-power-events.yaml

blueprint:
  name: Appliance power events
  description: Do something when an appliance (like a washing machine or dishwasher) has started or finished as detected by a power sensor.
  domain: automation
  source_url: https://gist.github.com/B4dM4n/aa1bde301f49a7a79bdb5da8d311387e
  input:
    power_sensor:
      name: Power Sensor
      description: Power sensor entity (e.g. from a smart plug device).
      selector:
        entity:
          domain: sensor
    starting_threshold:
      name: Starting power threshold
      description: Power threshold above which we assume the appliance has started.
      default: 10
      selector:
        number:
          min: 1
          max: 1000
          unit_of_measurement: W
          mode: slider
          step: 1
    starting_hysteresis:
      name: Starting hysteresis
      description: Time duration the power measurement has to stay above the starting power threshold.
      default: 30
      selector:
        number:
          min: 1
          max: 600
          unit_of_measurement: sec
          mode: slider
          step: 15
    finishing_threshold:
      name: Finishing power threshold
      description: Power threshold below which we assume the appliance has finished.
      default: 10
      selector:
        number:
          min: 1
          max: 1000
          unit_of_measurement: W
          mode: slider
          step: 1
    finishing_hysteresis:
      name: Finishing hysteresis
      description: Time duration the power measurement has to stay below the finishing power threshold.
      default: 30
      selector:
        number:
          min: 1
          max: 600
          unit_of_measurement: sec
          mode: slider
          step: 15
    start_actions:
      name: Start Actions
      description: Actions to run when the appliance has started
      selector:
        action: {}
    stop_actions:
      name: Stop Actions
      description: Actions to run when the appliance has stopped
      selector:
        action: {}
trigger:
  - platform: numeric_state
    entity_id: !input "power_sensor"
    for:
      seconds: !input "starting_hysteresis"
    above: !input "starting_threshold"
condition: []
action:
  - choose: []
    default: !input "start_actions"
  - wait_for_trigger:
      - platform: numeric_state
        entity_id: !input "power_sensor"
        below: !input "finishing_threshold"
        for:
          seconds: !input "finishing_hysteresis"
  - choose: []
    default: !input "stop_actions"
mode: single
max_exceeded: silent