Hi,
I have a utility meter that counts daily power consumption.
It is based on a sensor that counts total power consumption (no resets or similar, just increasing).
If I look at todays and yesterdays value, it looks good.
But if I look at other time frame it looks very strange.
Is this expected behaviour that I don’t understand, or is there something wrong with the sensor?
Notice the scale of the second graph. Something strange happened on December 27th. Please post the graph of the utility meter’s source sensor.
Hellis81
December 29, 2021, 2:40pm
3
How long do you save records in database?
Hi,
Here is the 24h graph:
Here is a 4 days graph, which shows that something weird has happened. I will investigate it and see what the issue might be. Maybe the physical meeter is reporting 0 values sometimes which is screwing up everything.
Hi!
As far as I know, I have not changed such setting. So whatever the default value is
Just like you were mentioning, for some reason, the physical sensor has sent “0” instead of the correct value during 27th of December.
I will look in to filtering these messages, so that the reported value must be >0 in order to be accepted.
Btw, I’m using a Shelly 3EM for monitoring.
tom_l
December 30, 2021, 10:23am
7
You should use an availability template.
See:
I have a similar issue with my SMA solar inverter. Every week or so it goes offline momentarily in the middle of the night (no idea why - it has non persistent logs!) and this changes the kWh counter to a low value then 0, then back up to the normal > 4000kWh count when it comes back online. This introduces a massive spike in energy use in home assistant. I have created a filtered version of the raw sensor (sensor.total_yield) to fix the issue:
template:
- sensor:
- name: "total_yield_f…
1 Like
Thanks tom!
I will look in to it and make more use of it in the future to better track sensors
