When inverters are assigned an overpower, this change does not affect the efficiency curve, which automatically drops off to zero starting at the nominal AC power, even if efficiency values are added above the nominal power value. Whether or not this is a bug, it does not reflect inverter operation accurately. In addition to this, inverters with a high difference between nominal power and maximum power seem to have high and unreasonable inverter overpower losses. The system page predicts a 0.1% overload loss and the actual losses are 3.0%.
You can see in this curve that the efficiency drops off at the nominal power of 45 kVA, not at the maximum power of 50 kVA, even though the manufacturer reported a normal efficiency for 50 kVA.
The new version of PVsyst (version 7.0, released today) does not have support for tracking orientations on sloping terrain. We were hoping that would be included in this revision. Do you have a schedule for when tracking on sloping terrain will be supported? We have a number of sites like this and we need to be able to model their performance.
