EZ1-M accuracy

[Marcwa19197]

Hi,

first of all: Thank you for the very nice integration!

Im using the inverter since a few days now. Does someone know how accurate the production data is?
On the outlet where the inverter is connected to i also use a Shelly Plus 1PM which shows different data. So what data tells the truth?

Which data is more accurate? Shelly or the inverter itself?

Example:
Shelly shows 0,006399 kWh of total generated energy.
Inverter shows 0,02218 kWh of total generated energy. (Reading sensor.apsystems_nameofdevice_lifetime_production)

Thanks!

[mawoka-myblock]

I really think that this is negligible. If you'd have a calibrated trustworthy device to measure against, I'd understand it, but I wouldn't consider the Shelly plug a trustworthy measuring device, especially not with low currents.

[Marcwa19197]

Yes - i also read that shellys are not accurate. But is the data from the inverter more accurate? Im just asking to add the correct sensor data to the Energy-Dashboard in HomeAssistant...

or other question... if inverter data is "more accurate": Does it make sense to have the shelly in between? Maybe for an "Kill Switch" for remotely resetting the inverter?

[mawoka-myblock]

I can't say anything about the accuracy of the inverter, but I personally would trust the inverter more.

[Marcwa19197]

Okay - thanks! Will the "daily data" resets every 24h to 0? So which one is the best to use in energy-dashboard?

[mawoka-myblock]

Just use the daily production. That works. I don't know when it resets, but that also doesn't really matter, since it's, when the inverter is offline.