sensor:

      suma_fazy:

        friendly_name: Phase summ

        unit_of_measurement: "W"

        value_template: "{{ states('sensor.0_electricity_meter_power_active_phase_1') | float | round(0) + states('sensor.0_electricity_meter_power_active_phase_2') | float | round(0) + states('sensor.0_electricity_meter_power_active_phase_3') | float | round(0) }}"