Maintaining Solar Panels in Coastal Bengal: A Practical Homeowner Guide

Rooftop solar systems contain zero moving parts, making them remarkably low maintenance. However, in southern West Bengal—where humidity, particulate dust, and coastal moisture interact—following a regular cleaning routine ensures your panels generate peak units year-round.

How Often Should You Clean Solar Panels?

During the dry winter and pre-monsoon spring months (November to April), a layer of airborne dust settles across glass surfaces, reducing sunlight penetration by 8% to 15%. We recommend washing panels every 15 to 20 days using plain water and a soft microfibre wiper.

Golden Rules for Panel Washing

• Clean in the Early Morning or Late Evening: Never pour cold water onto scorching hot solar glass at 1:00 PM. Thermal shock can crack the tempered glass.
• No Hard Detergents or Abrasive Brushes: Harsh chemical detergents strip the anti-reflective coating on high-efficiency photovoltaic glass. Plain tap water is sufficient.
• Inspect Cable Clamps After Storms: After heavy monsoon thunderstorms, verify that all DC conduit clamps and structure fasteners remain tightly bolted.