Hi,
I want to calculate the energy consumed for my electric floor heating and show it on the Energy panel.
Now, I have this solution:
Calculate the time how much has been turned on:
sensor:
- platform: history_stats
name: Heating time Living floor
entity_id: binary_sensor.heating_living_floor
state: "on"
type: time
start: "{{ 0 }}"
end: "{{ now() }}"
Then, calculate consumed the energy (based on linear consumption of 2100 W):
template:
- sensor:
- name: "Energy Heating Living floor today"
device_class: energy
state_class: total_increasing
unit_of_measurement: "kWh"
state: "{{ float(states.sensor.heating_time_living_floor.state) * 2.1 }}"
But…:
The entity Energy Heating Living floor worked well for some first days but after some weeks it starts to calculate bad results - see screenshot below:
So, it calculates negative consumption. I think it’s because of those jumps down every day. And I think it’s because of erasure based on recorder.auto_purge. it will probably go wrong heating_time_living_floor sensor. I’m on the right track?
Please how can I correctly calculate this energy consumption (based on time) to work properly on Energy panel?
Thank you!