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alexmayr81 asked

Consumption in VRM portal wrong

Since a few month I have a running ESS with MPII GX, a SMA Solar Inverter and a Elgris Smart Meter as Grid Meter (in EM24 compatible mode):


If I now compare the history values from VRM portal to my internally calculated values bases on grid meter and solar inverter values, all values beside the consumption looking fine:


Seems, that the VRM Portal has a special way to calculate the Consumption or my system is not configured correctly. I calculate the Consumption in that way:

Consumption = From Grid + (Solar - To Grid)

Could anybody explain me, what's the difference here? Thanks in advance!

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