EEVblog 1390 - NEGATIVE Household Solar Consumption? WHY?

Dave explains a common inherent measurement problem in the solar industry with having two separate solar power systems and monitors on the one house.
Why is Dave's household consumption going NEGATIVE on both his older Solar Analystics system and new Enphase Envoy system?
And why does the consumtion follow the sun?
And what is the easy fix?

Forum: https://www.eevblog.com/forum/blog/eevblog-1390-negative-household-solar-consumption-why/

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