While comparing my own enphase data with PVOutput data, I found a difference in the energy used data. Root cause is the data at 00:00 from the Enphase API.
This data is about the last interval of the previous day!
It is a timestamp issue for interval data: 00:00 at some date should actually be 24:00 at some date -1.
This is a known problem for timestamps. The concept of 24:00 is not implemented.
I corrected for this problem and thus see a difference for used energy. There is no problem for produced energy, nothing produced at 24:00.
This is not a big problem of course, there is no used energy lost, just moved in time…