Shelly 3EM 3-phases Energy sensor

[123 (Taras)]

@pfrock42

problems due to (apparently) occasional unavailability of the EM3 causing the float filter to produce a 0 value

Use the availability option to suppress reporting a value when any of the three sensors is unavailable. tom_l provided an example here:

Template sensors that shouldn't be updated on reboot - energy consumption

You should add availability templates to prevent the glitching: energy_consumed: value_template: "{{ ((states('sensor.energy_consumed_phase_1') | float + states('sensor.energy_consumed_phase_2') | float + states('sensor.energy_consumed_phase_3') | float) /1000) | round(1) }}" availability_template: > {{ not ( is_state('sensor.energy_consumed_phase_1', 'unavailable') or is_state('sensor.energy_consumed_phase_2', 'unavailable') or is_state('sensor.energy_consume…

Try this version:

  - sensor:
      - name: "house_energy_kWh"
        unit_of_measurement: "kWh"
        state_class: measurement
        device_class: energy
        state: >
          {{ [ states('sensor.shellyem3_40F52000EDD0_channel_a_energy'), 
               states('sensor.shellyem3_40F52000EDD0_channel_b_energy'),
               states('sensor.shellyem3_40F52000EDD0_channel_c_energy') ]
             | map('float') | sum }}
        attributes:         
          last_reset: '1970-01-01T00:00:00+00:00'
        availability: >
          {{ not 'unavailable' in 
             [ states('sensor.shellyem3_40F52000EDD0_channel_a_energy'), 
               states('sensor.shellyem3_40F52000EDD0_channel_b_energy'),
               states('sensor.shellyem3_40F52000EDD0_channel_c_energy') ] }}