It is still not possible to reset or calibrate a created utility meter.
It was created with:
utility_meter:
car_charging_session_energy:
unique_id: car_charging_session_energy
source: sensor.car_charging_total_energy # use template sensor
Also tried within the UI.
Developer tools States:
sensor.car_charging_session_energy_3
State: 0.001 (Was just started)
Attributes:
state_class: total_increasing
status: collecting
last_period: "0"
last_valid_state: "75.294"
last_reset: "2025-12-29T15:29:09.285300+00:00"
icon: mdi:car-battery
friendly_name: car_charging_session_energy
unit_of_measurement: kWh
device_class: energy
Tried to calibrate with:
action: utility_meter.calibrate
target:
entity_id: utility_meter.car_charging_session_energy_2
data:
value: "{{ states('sensor.wifi_power_outlet_1_energy_total') | float }}"
Tried to reset with:
action: counter.reset
data:
entity_id: sensor.car_charging_session_energy