From Lab to Field: Modelling Bifacial and Back-Contact Modules with SunSolve

This presentation walks through SunSolve’s vertically integrated simulation pipeline — from wafer-level optics and cell-level equivalent circuits through to module digital twins and full system energy yield. Malcolm demonstrates how lab measurements can be projected into real-world conditions using forward ray tracing, spectral modelling, and an extended thermal model validated at multiple field sites.

Key topics covered include:

• Creating a digital twin of your module using SunSolve’s vertically integrated simulation — from wafer optics through to system-level energy yield
• Differences between STC lab conditions and real-world operating conditions
• Forward ray tracing, thermal modelling, and spectral correction for accurate yield forecasting
• Unit-system approach with SPICE solving for array-level IV curves
• Validation of POA sensor simulation against NREL/FTC Solar field measurements
• Back-contact finger optimisation and its impact on bifaciality and series resistance
• Tandem cell (perovskite-silicon) yield simulation and bifacial gain analysis
• Using SunSolve to calculate calibrated inputs for PVsyst reports, enhancing bankability

Full proceedings – bifiPV Workshop Yiwu 2025

Thanks to Dr Radovan Kopeček, ISC Konstanz, Aiko and the Bifi PV Workshop organising committee for hosting the conference and inviting our team to speak.

This project received funding from the Australian Renewable Energy Agency (ARENA) as part of ARENA’s Advancing Renewables Program.