Home Assistant sensors can be used as the input source. To access the sensors, you have to create an access token in Home Assistant and configure the uni-meter with that access-token and the URL of your system.

Also, with this input, the input source can operate in two modes. Either in a mono-phase mode, where the power and/or the energy data is provided as a single value for all three phases, or in a tri-phase mode, where the power and/or the energy data is provided as a separate value for each phase.

Depending on the chosen phase mode, the sensors to be used can be configured by the following properties:

• Power mono-phase
  • power-sensor - sensor providing the total current power
• Power tri-phase
  • power-l1-sensor - sensor providing current power phase 1
  • power-l2-sensor - sensor providing current power phase 2
  • power-l3-sensor - sensor providing current power phase 3
• Energy mono-phase
  • energy-consumption-sensor - sensor providing total energy consumption
  • energy-production-sensor - sensor providing total energy production
• Energy tri-phase
  • energy-consumption-l1-sensor - sensor providing energy consumption phase 1
  • energy-consumption-l2-sensor - sensor providing energy consumption phase 2
  • energy-consumption-l3-sensor - sensor providing energy consumption phase 3
  • energy-production-l1-sensor - sensor providing energy production phase 1
  • energy-production-l2-sensor - sensor providing energy production phase 2
  • energy-production-l3-sensor - sensor providing energy production phase 3

If you have a setup where the power values are split up between power production and power consumption, you can additionally specify the sensors for the production.

• Power mono-phase
  • power-production-sensor - sensor providing the current production power
• Power tri-phase
  • power-production-l1-sensor - sensor providing current production power phase 1
  • power-production-l2-sensor - sensor providing current production power phase 2
  • power-production-l3-sensor - sensor providing current production power phase 3

The current power values are then calculated as

current power = power-sensor - power-production-sensor

or

current power Lx = power-Lx-sensor - power-production-lx-sensor

So the simplest /etc/uni-meter.conf file reading the data from Home Assistant sensors could look like this:

uni-meter {
  output = "uni-meter.output-devices.shelly-pro3em"

  input = "uni-meter.input-devices.home-assistant"

  input-devices {
    home-assistant {
      url = "http://192.168.178.51:8123"
      access-token = "eyJhbGciOiJIUzI1Ni...."

      power-phase-mode = "mono-phase"
      energy-phase-mode = "mono-phase"

      power-sensor = "sensor.current_power"
      energy-consumption-sensor = "sensor.energy_imported"
      energy-production-sensor = "sensor.energy_exported"
    }
  }
}