Optical
Measures dust on collection window, and does not require maintenance
No Maintenance / No Water
Module-Cell-Optical (Bifacial)
Compares soiled in-situ module IV data to soiling-corrected cell irradiance, and does not require maintenance
Module-Cell-Optical (Monofacial)
Compares soiled in-situ module IV data to soiling-corrected cell irradiance, and does not require maintenance