I am currently working on an ongoing research project that involves analyzing decomposition and transposition models for Nordic climates.
Our results show that the default decomposition and transposition models in PVsyst yield higher uncertainties compared to alternative models for several of the analyzed locations. Specifically, the current options in PVsyst (Erbs and Perez) yield significantly higher uncertainties (rRMSD of 12,9% and rMBD of 4,3%) compared to other options with almost no bias in terms of rMBD and rRMSD below 10%.
Would it be possible to provide an option to perform the decomposition and transposition step separately and import a custom file containing not only GHI, but also DNI, DHI, and POA to PVsyst?
Alternatively, could you add more decomposition models and transposition models to choose from in PVsyst?
