Random energy readings from Ohme Pro charger

[mnbf9rca]

The problem

(moved from home-assistant/core#137612)

I've noticed that my charger is showing sudden large, random jumps in "energy" e.g. here you can see it's unplugged, and the household CT is consistent 3A (until i boil a kettle), so clearly the charger can't have used 65 kWh in 0 seconds...

What version of Home Assistant Core has the issue?

core-2025.2.0

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant OS

Integration causing the issue

ohme

Link to integration documentation on our website

https://www.home-assistant.io/integrations/ohme/

Anything in the logs that might be useful for us?

`cat home-assistant.log | grep ohme` returns nothing

Additional information

No response

[dan-r]

Thanks for raising this here - I'll see what I can do in terms of debugging. It doesn't help that the API is somewhat lacking around energy readings! Potentially I just need to ignore energy readings when unplugged.

[mUbsta]

I think I have had a similar outlier here today.

[dan-r]

So I believe this value is not actually energy used but how much charge Ohme thinks the battery has. Its possible to use the 'integration helper' to provide an energy reading derived from the power sensor, which might be a good interim solution.