Dirt and debris buildup: Over time, dirt, dust, pollen, and bird droppings can accumulate on your panels, reducing sunlight absorption and energy production.

Cleaning frequency depends on factors:  Location, environment (dusty areas may need more frequent cleaning), and tilt of your panels.  Generally, cleaning every 6 months to a year is recommended.

Energy production loss: Studies show dirty panels can lose up to 30% efficiency, significantly impacting your energy savings.

Yes, regular cleaning maintains optimal performance: While there's a cost for cleaning, the increase in energy production from clean panels can outweigh the cleaning expense. Consider the cost of cleaning as an investment in maximizing your solar panel system's return on investment (ROI).