Water repellent coatings for solar panels are designed to enhance their performance and longevity by minimizing the impact of dirt, dust, and water accumulation. Here's a breakdown:   How they work: Hydrophobic Properties: These coatings create a surface that repels water. When rain or water droplets come into contact with the coated panel, they form beads and easily roll off, carrying away dust and other particles.   Reduced Soiling: By minimizing the adhesion of dirt and debris, these coatings help keep the solar panels cleaner for longer periods.   Improved Efficiency: Clean solar panels absorb more sunlight, leading to increased energy production and higher efficiency.