Can I use multiple inverters in PV Designer?

Yes, PV Designer 4.30 and later supports multiple inverters for each design, and if there are multiple strings, they can be assigned to multiple inverter inputs. It is also possible to simulate the combination of multiple designs (and therefore multiple inverters or multiple array orientations) using the Combine mode in the Results Area. Create individual designs, each with its own inverters and orientation and then combine the results.