摘要：This study investigated the effect of dust to the performance degradation of PV street lights deployed at several areas (coastal, urban, industry, and village) in Kupang city. Results showed that maximum power output (P max ) of all modules decreased by 9 % to 14 %. Short circuit current (I sc ) was the parameter strongly affected by dust compared to open circuit voltage (V oc ). Performance of the PV modules increased back to their initial conditions after cleaning. This was indicated by the increasing of Isc and Voc of the modules that leading to the escalating of their Pmax values. The worst effect of dust was exhibited by PV modules installed at coastal area. A simple analysis revealed that the module would lose 87.75 Wh of energy d –1 . This study suggested that dust derating factor applied for PV street light design in Kupang should be higher than the standard (5 %).
