Energy Dashboard 0 / Pseudo negative value

[Loic691]

Checklist

• I have updated to the latest available Home Assistant version.
• I have cleared the cache of my browser.
• I have tried a different browser to see if it is related to my browser.
• I have tried reproducing the issue in safe mode to rule out problems with unsupported custom resources.

Describe the issue you are experiencing

Hi all
From many years, I find strange behaviour on pseudo negative value in energy Dashbord.
I saw negative value on global view. But when disabling all other source sensor, I saw most variation on 0 level...
In sensor historic, I saw I positive but slow, slow variation...
Do you have an idea of this behaviour ?
Heres's screen capture of the relevant date / time sensor.
We can saw on images an pseudo 0 variation... I don't understand why it be displays as negative variation/value

And global result with 1 month slot instead of starting Y axis with 0

Describe the behavior you expected

No negative variation inside +0 and -0 range

Steps to reproduce the issue

...

What version of Home Assistant Core has the issue?

core-2025.9.3

What was the last working version of Home Assistant Core?

none

In which browser are you experiencing the issue?

Last chrome

Which operating system are you using to run this browser?

Windows 11

State of relevant entities

Problem-relevant frontend configuration

JavaScript errors shown in your browser console/inspector

Additional information

No response

[karwosts]

Energy just displays the data it gets from statistics. If your statistics has minute negative values in it, then energy will also show that.

If you want this to be looked at as a frontend bug, then you need to bring data to show that these values are not present in your statistics, but I'm sure you'll find that they are there.

Debugging how those values got there is not a frontend concern, you'll have to look for support elsewhere for that.