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This chapter analyzes soiling effects on LEA2 plant electrical performance. Initially, before complete cleaning (Week 0), ST1 showed a slightly higher generation than ST2; after this reference point, both showed equivalent performance. Regular cleaning of ST2 showed an accumulated advantage of 88.29 kWh compared to ST1, highlighting soiling effects cumulative nature and the importance of interventions. Analysis of the results indicates that rainfall is a relevant factor in reducing soiling although insufficient to fully recover modules electrical performance. During dry periods, especially during the 2024 drought, %ELEA2 reached maximum values (5.25%), while long intervals between cleanings and the absence of rain intensified generation losses. Performance metrics (Yield, CF, and PR) reinforce that manual cleaning improves module performance, especially during dry or post-rainy periods. Even when the intervals between cleanings were extended, ST2 maintained better results than ST1, proving the effectiveness of regular interventions.

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Experimental Results

  • 章节

  • 发表日期：

    2026年

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  • José Janiere Silva de Souza,
  • Paulo Cesar Marques de Carvalho

摘要

This chapter analyzes soiling effects on LEA2 plant electrical performance. Initially, before complete cleaning (Week 0), ST1 showed a slightly higher generation than ST2; after this reference point, both showed equivalent performance. Regular cleaning of ST2 showed an accumulated advantage of 88.29 kWh compared to ST1, highlighting soiling effects cumulative nature and the importance of interventions. Analysis of the results indicates that rainfall is a relevant factor in reducing soiling although insufficient to fully recover modules electrical performance. During dry periods, especially during the 2024 drought, %ELEA2 reached maximum values (5.25%), while long intervals between cleanings and the absence of rain intensified generation losses. Performance metrics (Yield, CF, and PR) reinforce that manual cleaning improves module performance, especially during dry or post-rainy periods. Even when the intervals between cleanings were extended, ST2 maintained better results than ST1, proving the effectiveness of regular interventions.