Sonoff POWR320D very slow measure and not accurate after HA core update 2026.1

[autourdupc]

The problem

Measures returned from POWR320D sonoff comes slowly or inaccurate after last Home Assistant core update 2026.1.

Got at night 18w measure on solar panels even after disconnecting panels.

Same today, measures not reliable.

What version of Home Assistant Core has the issue?

Core-2026.1.0

What was the last working version of Home Assistant Core?

Core-2025

What type of installation are you running?

Home Assistant OS

Integration causing the issue

Sonoff
It was perfect since last core update.

As you can see, got 15 watt production at night till midnight. At midnight it comes to 0.

Nothing to provide

Example YAML snippet

Anything in the logs that might be useful for us?

Additional information

No response

[Mahoniz]

I have exactly the same issue.

After updating to Home Assistant Core 2026.1, my Sonoff POWR320D also reports delayed and inaccurate power values (for example showing power usage at night when there is no load).
Everything worked correctly before the update.

[wrrnsnw-sys]

Have a similar issue if I open the eWeLink app on my phone it sometimes works ok. This is a huge problem as I use the power draw to automate my 2 geysers run one at a time.
If I restore a backup will it solve the problem.

[autourdupc]

@wrrnsnw-sys @Mahoniz
When you got the phantom power, got to ewlink software and read the value... Is it good or false ?
Then go back to HA... Still bad or good ?

In my case seem that reading from ewlink reset the bad measurement of power.

[wrrnsnw-sys]

The power reading is good in eWeLink. When I turn off the geyser in HA it then shows power draw. So it’s reversed then not. So not stable.

[AlexxIT]

#1707

[izp2]

Reverting to the previous version of Home Assistant doesn't help; the measurements still don't work. I've tried this myself.
There's an error on the HA side or on Ewelinka's side.

[Mahoniz]

I’m experiencing the same issue.

eWeLink itself works perfectly fine in the official app at all times. In Home Assistant, the values only update correctly after I remove the integration and add it again. After that, it works for a short time, but then the values stop updating again.

The values are not always null — in many cases they just stay at the last known value and never change, even though the device state has clearly changed in the eWeLink app.

Updating the integration sometimes helps briefly: after an update, the values start updating again for a few seconds, but then the problem returns.