Own sensors in utility meter unavailable. Please help

I have a smart plug that gives usage information in this sensor: sensor.moilux_smart_plug_power

Because I want statistics by hour,day week and month I added this to the utility meter platform in configuration.yaml

  dageijks_gebruik_moilux:
    source: sensor.moilux_smart_plug_power
    cycle: daily
  uurlijks_gebruik_moilux:
    source: sensor.moilux_smart_plug_power
    cycle: hourly
  wekelijks_gebruik_moilux:
    source: sensor.moilux_smart_plug_power
    cycle: weekly   
  maandelijks_gebruik_moilux:
    source: sensor.moilux_smart_plug_power
    cycle: monthly 

Unfortunately the result/state I get is “unavailable”. What mistake do I make.

Mine are like this: Your yaml

  dageijks_gebruik_moilux:
    source: "sensor.moilux_smart_plug_power"
    cycle: daily
  uurlijks_gebruik_moilux:
    source: "sensor.moilux_smart_plug_power"
    cycle: hourly
  wekelijks_gebruik_moilux:
    source: "sensor.moilux_smart_plug_power"
    cycle: weekly   
  maandelijks_gebruik_moilux:
    source: "sensor.moilux_smart_plug_power"
    cycle: monthly 

What type of data does the entity provide? It should be kWh, not W.

unit_of_measurement: W
If that is not correct, is there another way to achieve my goal ?

You need an integral sensor to convert the wattage to kWh. See:

Thank you all. Will dive into this