Dust, dirt, pollen, bird droppings, and other debris can reduce energy output by 15–25%, according to the National Renewable Energy Laboratory. This guide shows you how to clean solar panels safely and effectively—backed by expert tips and the latest best practices for DIY and professional options. The UCSD study also found that normal debris such as dust, dirt, and pollen have a minimal effect on efficiency. 05 percent efficiency is lost on average. Solar photovoltaic (PV) panels require minimal maintenance once they are installed, and are designed to operate for 25-30 years. But it's still important to keep them clean to continue achieving optimal power generation. This not only diminishes your.
