MQTT sensor as source for Energy measurement dashboard

Configuration
1

Hello,
I am newbie and I would really appreciate your support. I am trying to add on the Energy measurement dashboard the total energy used by my house.
I am reading with Tasmota the number of kWh and with MQTT the information is available on the HAS, I have created an sensor and a template, however the sensor does not pick the information from the template:

# Energy management
mqtt:
  sensor:
    - name: "Haus_used_energy"
      device_class: energy
      state_class: total
      state_topic: "home/power/consumptionkWh"
      unit_of_measurement: "kWh"
      force_update: true

template:
  - sensor:
    - name: "Zaehler_Haus_used_energy"
      state: "{{ states('sensor.tasmota_haus_total_in') }}"
      unit_of_measurement: 'kWh'
      device_class: energy
      state_class: measurement
      attributes:
          last_reset: '1970-01-01T00:00:00+00:00'

Developer tools > state:

sensor.zaehler_haus_used_energy
Zaehler_Haus_used_energy
	3753.0 	state_class: measurement
unit_of_measurement: kWh
device_class: energy
friendly_name: Zaehler_Haus_used_energy
last_reset: 1970-01-01T00:00:00+00:00


sensor.haus_used_energy
Haus_used_energy
	unknown 	state_class: total
unit_of_measurement: kWh
device_class: energy
friendly_name: Haus_used_energy

A hint will be appreciated,
Thanks,
J.D.