Home Assistant - Poweropti / powerfox powermeter integration

configuration.yaml

sensor:
# Powerfox
- platform: rest
  name: powerfox_meter_energy
  # friendly_name: "Powerfox Stromzähler"
  resource: https://backend.powerfox.energy/api/2.0/my/main/current?unit=kwh
  username: !secret powerfox_username
  password: !secret powerfox_password
  json_attributes:
    - A_Plus
    - Watt
    - Timestamp
  value_template: "{{ value_json.A_Plus }}"
  unit_of_measurement: kWh
  # icon: mdi:transmission-tower-import
  # last_reset: 2019-01-01T00:00:00+00:00
  device_class: energy
  state_class: total
- platform: template
  sensors:
    powerfox_meter_power:
      friendly_name: "Powerfox Stromzähler power"
      value_template: "{{ state_attr('sensor.powerfox_meter_energy', 'Watt') }}"
      # icon: mdi:transmission-tower
      device_class: power
      unit_of_measurement: W
      # state_class: measurement