The effect of saharan dust on PV system yields in the tropical environment of barbados

Abstract

Saharan dust migration increases atmospheric dust concentrations in Barbados, which can settle onto solar photovoltaic (PV) module surfaces and reduce power output. Accumulation rates are further increased as systems are installed at lower tilts. Monthly yields of four commercial sized PV systems (greater than 100kWp) within the period February 2014 to January 2015 were obtained. These values were investigated during three periods, highest Saharan dust concentration, wet season and dry season, are investigated. Highest yields occurred during the dry season, which was also the period of lowest dust concentrations even though higher ambient temperatures were experienced.