I have noticed that the power figures in the app appear to be accurate but the energy generation figures are completely wrong. This is fairly obvious when like today it's a sunny day, and the energy figures just don't seem to make sense.
I have taken a closer look and it looks like the energy data is one day behind, but power data is up to date. By looking at the 5-minute power generation figures in the GivEnergy API, I've been able to estimate the energy generation figures and it's clear the portal and app are a day out. I also have Enphase microinverters, which means I have the benefit the Enphase Enlighten portal. This confirms the figures from the GivEnergy API.
I've submitted a bug report, and I doubt it's just me but it would be interesting to know if this is just my setup. Is anyone else experiencing the same?