Mitigating soiling losses on PV projects with soiling measurement technology

By Kelly Pickerel Photovoltaic modules collect more than just sunlight after they are installed. Depending on the siting location, particles ranging from dust to snow can accumulate on a PV module’s surface, reducing its performance and ultimately leading to significant power losses. This build-up–commonly referred to as soiling–can be compounded by such weather parameters as wind speed, relative humidity and ambient temperature, as well as localized activities near or around the PV plant.
To address and ideally avoid power losses caused by soiling, the new IEC 61724-1:2017 standard for PV system performance monitoring suggests that operators of utility-scale and large PV projects measure soiling

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