Soiling Modelling in Large Grid-Connected PV Plants for Cleaning Optimization

Soiling of PV modules is an issue causing non-negligible losses on power plants, between 3 and 4% the total energy production. Cleaning most common way to mitigate soiling. The impact cleaning activity can be significant, both in terms cost resources consumption. For these reasons, it important monitor predict soiling profiles establish optimal schedule. Especially locations where raining irregular or desert winds carry a high concentration particles, also know how precipitation dust events affect ratio. This paper presents new model based environmental conditions that helps decision-making process was validated by analysis five large grid-connected plants Spain over two years operation, with 200 MW. comparison sensors at included. Excellent results were achieved, mean difference being 0.71%.