This guide explores the most effective techniques for cleaning solar panels on a roof, safety precautions, tools required, potential costs, and tips for maintaining maximum solar output. . Solar photovoltaic panels represent a significant investment in clean energy for a home, working tirelessly to convert sunlight into usable electricity. While these systems are designed for durability and minimal maintenance, their efficiency is directly tied to the clarity of their tempered glass. . There are some instances where solar panels might need cleaning, but most of the evidence says solar panels are self-sufficient and low-maintenance. Here's what we'll cover: Over time, dust, debris, bird droppings, pollen, and even mildew can accumulate on your roof-mounted solar. . Regular cleaning not only ensures optimal performance but can also significantly impact your energy savings. 2 How Often Should You Wash Your Solar Panels? Solar panels face. .