Energy dashboard and entity reading mismatch

Hello,

I am using a wifi usb stick to readout my growatt inverter. Then I have added the lifetime solar energy to the energy dashboard. I am noticing that there is a difference in values from the dashboard and the entity.

For example the energytoday says 2 kWh produced. And the dashboard is saying only 1.1 produced.

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Does anyone have any pointers on where to look for the difference?
Appreciated