Ludovic BOUÉ

> Working for me on a Waveshare board. Could you share the configuration used for this board?

What's the status of the code review?

Have you been able to identify the cause of this error?

I have a working example for `solar_power` device type: [app_main.cpp](https://github.com/lboue/esp-matter/blob/9c02643be20c2f0e911b218ae1c9e36261fba258/examples/solar_power/main/app_main.cpp). The values are static, but it works. My case is for `ExportedEnergy` feature and `CumulativeEnergyExported `attribute.  I had to...

Now we need to find how to implement a delegate for ElectricalPowerMeasurement cluster.

That's what I'm trying to do here, but for the moment I'm getting an error: https://github.com/espressif/esp-matter/issues/1411#issuecomment-2864013189

Now my ElectricalPowerMeasurementDelegate is working and Accuracy attribute value is OK. I need to find how to use the delegate to update attributes values.

Sure. My code is here: https://github.com/lboue/esp-matter/blob/1497afab4d965c5d4fa338cc93ac790512593c8e/examples/solar_power/main/app_main.cpp#L118-L120

> I assume the HomeAssistant modifications to implement attribute retrieval are at: > > [home-assistant/core#144430](https://github.com/home-assistant/core/pull/144430) This PR for `ElectricalEnergyMeasurement` `CumulativeEnergyExported` attribute: - https://github.com/home-assistant/core/pull/144061 But my issue with delegate is for...

> I understand, however, I've implemented the ElectricalPowerMeasurement cluster and haven't had any issues (without a delegate). I also get the active power (watts), current (amps), and grid voltage (volts)...