Why Dust & Smog Drops Solar Efficiency by 25% in Pakistan

The Heavy Cost of Soiling in Pakistani Cities

Due to high particulate matter, road dust, and winter smog in cities like Lahore, Faisalabad, and Karachi, unwashed solar panels can lose up to 25% to 35% of their daily power output within just 3 weeks of neglect.

Best Practices for Washing Panels

• Never use hard tap or bore water: Hard water contains calcium and magnesium minerals that permanently bake onto hot glass under the sun, forming stubborn chalky white scale that blocks photons.
• Clean early in the morning or late evening: Spraying cold water on scorching 65°C afternoon glass causes sudden thermal shock, leading to micro-fractures or shattered panels.
• Use soft microfiber wash tools: Avoid wire brushes, abrasive wipers, or harsh chemical detergents that scratch and erode the factory anti-reflective nano-coating.