Power Sankey Card: Make MIN_POWER_THRESHOLD configurable

[Revilo91]

Describe the enhancement

In the Energy Dashboard's Power Sankey Card, any power consumption below 0.01 kW (10W) is currently filtered out and not displayed. This causes smaller consumers (e.g., standby devices) to not appear as individual devices, and their consumption is added to the "untracked consumption" instead.

Use cases

Make the MIN_POWER_THRESHOLD configurable in the card settings (e.g., 0W, 1W, 5W, 10W, or completely disable filtering). This would allow small constant consumers to be visible and make "untracked consumption" more accurate.

Perhaps it could be implemented like this?

• Group small consumers together (e.g., "Other small consumers: 48W")
• Per-card threshold setting instead of global

Visual examples

No response

Anything else?

Perhaps this could be a starting point?

In src/panels/lovelace/cards/energy/hui-power-sankey-card.ts:

const MIN_POWER_THRESHOLD = 0.01;
if (value < MIN_POWER_THRESHOLD) { return; }

[Mincka]

I think this limit was put to avoid dealing with multiple small lines of text that would be bigger than the size of the colored line.
It's already trying to reduce to reduce the font size when there are large differences between loads.

However, I agree that excluding them with an arbitrary value is a bad choice.
I think the main issue is having a fixed height on the div with lot of lost space on desktop.

Funny thing, I just discovered that the power flow is horizontal on mobile app Android for some reason, making the presentation even worse.

There's an issue here, but not in the correct repo since it's the frontend code as you pointed it out:
home-assistant/core#160123

[Mincka]

FYI, logic in 2026.2.0 is now:

// Minimum power threshold as a fraction of total consumption to display a device node
// Devices below this threshold will be grouped into an "Other" node
const MIN_POWER_THRESHOLD_FACTOR = 0.001; // 0.1% of used_total

So if you charge your car with 8 kW, you should still be able to see individual devices using as low as 8 watts.