 This study examined the impact of various factors on photovoltaic, PV, module performance across Eurasia and Africa. It found that shallow angle reflectivity has a minimal effect on PV performance, while spectral effects can vary significantly depending on location and module type. Additionally, the study showed that irradiance and module temperature can have a significant impact on PV performance, ranging from minus 20% to plus 5%. This article was authored by Thomas Hulled and Anna M. Gracia Amillo.