[IEEE 2016 13th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON) - Chiang Mai, Thailand (2016.6.28-2016.7.1)] 2016 13th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON) - The impact of atmospheric conditions on the sustainability of a PV system in a semi-arid region: A case study from South Africa