core: Energy cost sensors reset during HA restart even though the energy sensor they track do not.
The problem
In the energy dashboard, when adding a “price per kWh” sensor to an energy sensor, HA automatically creates a new costsensor. They both reset at midnight, which is fine.
However, if you restart Home Assistant, the cost resets to zero, even if the energy sensor does not. Below, I have restarted HA at ~13:00
Energy sensor (keeps increasing):
Cost sensor (has been reset):
What version of Home Assistant Core has the issue?
core-2022.9.7
What was the last working version of Home Assistant Core?
NA
What type of installation are you running?
Home Assistant OS
Integration causing the issue
Energy
Link to integration documentation on our website
https://www.home-assistant.io/docs/energy
Diagnostics information
No response
Example YAML snippet
No response
Anything in the logs that might be useful for us?
No response
Additional information
A link to the community post discussing this.
About this issue
- Original URL
- State: closed
- Created 2 years ago
- Reactions: 15
- Comments: 23 (1 by maintainers)
This issue is unresolved as at 2023.12.2 Cost sensor resets to zero on system restart.
@hajo62 :
State_class of the monetary sensor is
totalwhile the sensor for the energy measurement istotal_increasingWhile the sensors with state class
totalshould have a reset timestamp, thetotal_increasingsensors don’t have.It needs to be discussed, if it is supposed that the monetary sensor is
total- compared to the energy measurement sensor. Here, some explanation might be usefull why it is set to the state_class…Workaround: Creating a Utility_Meter with the source of the monetary sensor could be used to create a sensor that never resets (or on a specified value (weekly, monthly, quarterly, yearly, etc.)
[EDIT] - wrongly mentioned the utility_meter would need a state_class: total_increasing here, which was wrong.