Energy flow issue with upstream devices

[Masterz69]

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

Energy dashboard energy flow chart looks fine while no upstream devices configured:

As soon one device have configured upstream device:

• energy flow chart starts to looks weird:

Describe the behavior you expected

Expect to see smth like this, f.e. - with more columns in chart:

Steps to reproduce the issue

1. configure upstream device for energy meter
2. check how energy flow looks like

What version of Home Assistant Core has the issue?

2025.9.4

What was the last working version of Home Assistant Core?

No response

In which browser are you experiencing the issue?

Google Chrome Version 140.0.7339.128 (Official Build) (64-bit)

Which operating system are you using to run this browser?

Windows 10 Pro 22H2 build 19045.6332

State of relevant entities

Problem-relevant frontend configuration

JavaScript errors shown in your browser console/inspector

Additional information

No response

[karwosts]

This is the intended behavior.

If you have no device hierarchy, flow is categorized by area.
If you have any device hierarchy set, flow is categorized by device hierarchy.

Your flowchart is pretty sparse as you have no energy generating sources, so there's not much for it to build on.