1. Severe Power Generation Losses

Dust, sand, bird droppings and other attachments block sunlight on PV panels and reduce the light transmittance of panel glass. According to industry tests, 10 grams of dust per square meter of PV module will cut power generation efficiency by 5%~8%. In heavily dusty areas, the overall power output can drop by 10%~30%. Large-scale PV power stations will suffer continuous power losses, resulting in huge economic losses over time. This is a typical hidden cost that is often overlooked in PV operation and maintenance.

2. Hot Spot Effect & Permanent Damage to PV Modules

Uneven dust coverage causes partial shading on PV panels. The shaded areas cannot generate power normally and act as loads to consume electricity, forming hot spots. The temperature of hot spot areas is 30~50℃ higher than normal areas. Long-term high temperature will carbonize module backsheets, burn solar cells and crack panel glass, greatly shortening the service life of PV panels. In severe cases, it may trigger circuit failures, fire hazards and cause irreversible damage to the power station.