Power

This integrationIntegrations connect and integrate Home Assistant with your devices, services, and more. [Learn more] provides automation triggers and conditions for entities with the power device class, like sensors and number entities. Use it when you want to react to how much power a device or circuit is using right now. There are no configuration options for this integration.

Power and energy

• Power is the rate of energy use at a specific moment. It is usually shown in units like W or kW. Use the triggers and conditions in this integration when you want to react to a live load change, such as a washing machine finishing or a heater starting.
• Energy is the total amount used over time. It is usually shown in kWh. If you want to track accumulated usage, use an energy sensor or the Energy dashboard.

List of triggers

The Power integrationIntegrations connect and integrate Home Assistant with your devices, services, and more. [Learn more] provides the following triggers. Each link below opens a dedicated page with examples, fields, and a step-by-step UI walkthrough.

• Power changed (power.changed) Triggers after one or more power values change.

• Power crossed threshold (power.crossed_threshold) Triggers after one or more power values cross a threshold.

For an overview of every trigger across all integrations, see the triggers reference.

List of conditions

The Power integrationIntegrations connect and integrate Home Assistant with your devices, services, and more. [Learn more] provides the following conditions. Each link below opens a dedicated page with examples, fields, and a step-by-step UI walkthrough.

• Power value (power.is_value) Tests the power value of one or more entities.

For an overview of every condition across all integrations, see the conditions reference.

Power automation examples

Here are a few ways you can use power automations in Home Assistant.

Automation: notify when the washing machine finishes

When the washing machine power drops below 3 W for 5 minutes, send a notification so you know the cycle is done.

• Trigger: Power crossed threshold
  • Target: Washing machine power sensor
  • Threshold type: Below 3 W
  • For at least: 00:05:00
• Action: Send a notification message
  • Target: My Device (notify.my_device)

alias: "Notify when the washing machine finishes"
triggers:
  - trigger: power.crossed_threshold
    target:
      entity_id: sensor.washing_machine_power
    options:
      threshold:
        type: below
        value:
          number: 3
          unit_of_measurement: "W"
      for: "00:05:00"
actions:
  - action: notify.send_message
    target:
      entity_id: notify.my_device
    data:
      message: "The washing machine cycle is finished."

Automation: only turn on the water heater boost when power use is low enough

At 02:00, turn on the water heater boost switch only if the current household power use is below 2500 W.

• Trigger: Time: 02:00
• Condition: Power value (below 2500 W)
  • Target: Main power sensor
• Action: Turn on switch
  • Target: switch.water_heater_boost

alias: "Turn on water heater boost when power use is low enough"
triggers:
  - trigger: time
    at: "02:00:00"
conditions:
  - condition: power.is_value
    target:
      entity_id: sensor.main_power
    options:
      threshold:
        type: below
        value:
          number: 2500
          unit_of_measurement: "W"
actions:
  - action: switch.turn_on
    target:
      entity_id: switch.water_heater_boost