How do I model the boost from bifacial modules?

SolarNexus doesn't currently offer an automated way to calculate the boost from bifacial panels; this is something you'll need to estimate using a formula or tool provided by the manufacturer, typically as a function of the panel orientation/pitch and the mounting surface albedo. However, you can manually input the estimated boost into SolarNexus.

When a PV system uses bifacial modules, enter the estimated boost to yield on the PV Output Modeling dialog, available from the Systems screen. If you enter a boost of 10%, for example, the annual PV output and system offset % will be increased by 10%, and this will be reflected in the financial analysis on the Analysis screen and proposal.