Dust accumulation is the build-up of airborne mineral dust on PV equipment. On module glass, it reduces the amount of light reaching the cells, which lowers array current and energy yield. Losses on the modules show up as granular dust soiling losses. These build up during dry spells and mostly recover after rain or cleaning. Dew and humidity can cement dust onto the glass. Sandstorms or frequent cleaning can wear down the glass surface and its anti-reflective coating. Dust that collects on inverter air filters, air inlets and heat sinks blocks cooling. This can cause inverter overheating, temperature derating, shutdown and electronic failures. Exposure is worst in arid, windy and desert areas with little rain, on modules with low tilt, and near agricultural land. Exposure can be reduced by cleaning on a schedule matched to how fast dust builds up, cleaning right after dust storms, using anti-soiling coatings, and tilting modules more steeply. On inverters, clean the enclosure, air inlets and outlets, and filters regularly, and keep monitoring the temperature in inverter areas.
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typical_power_lossc1 verified · fact 5–20 PERCENT
Conditions: Annual energy yield loss from soiling, varying with module location
sec=2.3.6 h=a3dffa29110fverified by: review-workflowverified on: 2026-10-20review note: reviewer: the compiler-flagged conflict is a different scenario or source, not disagreement
c2 verified · fact nominal 4.4 PERCENT
Conditions: Mean daily production loss from dust on modules, Malaga, Spain
sec=h18 h=33a227523871verified by: review-workflowverified on: 2026-10-20review note: possible conflict with c3 (same source; check the conditions); possible conflict with c4 (same source; check the conditions); possible conflict with c5 (same source; check the conditions); possible conflict with c6 (same source; check the conditions); possible conflict with c7 (same source; check the conditions); possible conflict with c8 (same source; check the conditions); reviewer: the compiler-flagged conflict is a different scenario or source, not disagreement
c3 verified · fact ≥ 20 PERCENT
Conditions: Daily production loss during long dry periods of dust build-up, Malaga, Spain
sec=h18 h=33a227523871verified by: review-workflowverified on: 2026-10-20review note: possible conflict with c2 (same source; check the conditions); possible conflict with c4 (same source; check the conditions); possible conflict with c5 (same source; check the conditions); possible conflict with c6 (same source; check the conditions); possible conflict with c7 (same source; check the conditions)
Conditions: Power loss over a 5-week period, Belgium
sec=h18 h=33a227523871review note: possible conflict with c2 (same source; check the conditions); possible conflict with c3 (same source; check the conditions); possible conflict with c5 (same source; check the conditions); possible conflict with c6 (same source; check the conditions); possible conflict with c7 (same source; check the conditions); possible conflict with c8 (same source; check the conditions)conflicts with: Dust accumulation (c1)
c5 verified · fact nominal 5.86 PERCENT
Conditions: Estimated annual soiling loss, Crete
sec=h18 h=33a227523871verified by: review-workflowverified on: 2026-10-20review note: possible conflict with c2 (same source; check the conditions); possible conflict with c3 (same source; check the conditions); possible conflict with c4 (same source; check the conditions); possible conflict with c6 (same source; check the conditions); possible conflict with c7 (same source; check the conditions); possible conflict with c8 (same source; check the conditions)
c6 verified · fact nominal 6.9 PERCENT
Conditions: Monthly power loss, plant on sandy soil, rural Southern Italy
sec=h18 h=33a227523871verified by: review-workflowverified on: 2026-10-20review note: possible conflict with c2 (same source; check the conditions); possible conflict with c3 (same source; check the conditions); possible conflict with c4 (same source; check the conditions); possible conflict with c5 (same source; check the conditions); possible conflict with c7 (same source; check the conditions); possible conflict with c8 (same source; check the conditions)
c7 verified · fact nominal 1.1 PERCENT
Conditions: Monthly power loss, plant on more compact soil, rural Southern Italy
sec=h18 h=33a227523871verified by: review-workflowverified on: 2026-10-20review note: possible conflict with c2 (same source; check the conditions); possible conflict with c3 (same source; check the conditions); possible conflict with c4 (same source; check the conditions); possible conflict with c5 (same source; check the conditions); possible conflict with c6 (same source; check the conditions); possible conflict with c8 (same source; check the conditions); reviewer: the compiler-flagged conflict is a different scenario or source, not disagreement
c8 disputed nominal 45.8 PERCENT
Conditions: Soiling loss over three months with no cleaning, Kuwait
sec=h18 h=33a227523871review note: possible conflict with c2 (same source; check the conditions); possible conflict with c4 (same source; check the conditions); possible conflict with c5 (same source; check the conditions); possible conflict with c6 (same source; check the conditions); possible conflict with c7 (same source; check the conditions)conflicts with: Dust accumulation (c1)
caused_by c4