gistfile1.txt

sensor:
  - platform: template
    sensors:
      pzem_kwh:
        unit_of_measurement: kWh
        value_template: "{{ states('sensor.pzem_004t_v3_energy') | float / 1000 }}"

utility_meter:

  daily_energy_pzem:
    source: sensor.pzem_kwh
    cycle: daily

  daily_energy_pzem_tariff:
    source: sensor.pzem_kwh
    cycle: daily
    tariffs:
      - day
      - night

automation:
  - alias: Set day tariff
    trigger:
      - platform: time
        at: "07:00:00"
    action:
      - service: utility_meter.select_tariff
        entity_id: utility_meter.daily_energy_pzem_tariff
        data:
          tariff: day

  - alias: Set night tariff
    trigger:
      - platform: time
        at: "23:00:00"
    action:
      - service: utility_meter.select_tariff
        entity_id: utility_meter.daily_energy_pzem_tariff
        data:
          tariff: night