Solar Panel Cleaning in Denver

Solar panels work by absorbing sunlight, but when dust, dirt, and other debris accumulate, they can’t generate electricity as efficiently. Dirty panels can reduce energy production by up to 15%, increasing your reliance on the grid and raising your energy costs.

In Denver, we recommend cleaning your solar panels at least once or twice per year to maintain optimal efficiency. If you live near a construction site, busy roads, or trees, you may need more frequent cleanings. We’re happy to work with you to develop a site-specific maintenance plan for your home.

While rain and snow may wash away some loose debris, they do not effectively remove stubborn grime, mineral deposits, bird droppings, wildfire ash, or pollen. In fact, snowmelt can leave behind a layer of hard water stains that further reduce efficiency.

Additionally, a process known as cementation can occur, where fine dust, dirt, pollution, and organic material (such as tree sap and pollen) mix with moisture and harden onto the panel surface. Over time, these substances bond tightly to the glass, making them increasingly difficult to remove with just rainwater or a light rinse. Cementation not only reduces energy production but can also create permanent damage if left untreated, leading to panel degradation and potential warranty issues.

At Summit Window Cleaning, we use advanced, industry-approved techniques to ensure safe and effective solar panel cleaning. We use highly purified water from Reverse Osmosis (RO) & De-ionization (DI) filtration systems, combined with soft-bristle water-fed brushes and eco-friendly, solar-safe cleaning agents. This method removes dirt, cemented debris, and mineral buildup without leaving streaks or residue.

Unlike some companies, we never use pressure washers, which can crack panel glass, damage seals, and void warranties. Our approach maximizes energy output, extends panel lifespan, and protects your investment.

Over time, neglected solar panels produce less energy, shorten their lifespan, and may even void their manufacturer’s warranty if regular maintenance is required. Additionally, debris buildup can lead to hot spots, causing overheating and potential panel damage.

Our technicians undergo NABCEP-accredited residential solar training classes, ensuring they understand the unique safety and maintenance needs of solar panel systems. We also receive extensive worksite safety, rooftop safety, and solar array safety training, making us uniquely qualified amongst solar panel cleaning providers in Denver.

This level of expertise is rare in the industry, and it means that when you hire Summit Window Cleaning, you’re working with professionals who not only clean your panels safely and effectively but also understand how to protect your solar investment.

Many homeowners often see an instant improvement in energy production after a professional cleaning. If your panels have been dirty for a while, you may notice a noticeable increase in efficiency on your solar monitoring app.

Many solar manufacturers require regular cleaning as part of their warranty conditions. If your panels become damaged due to excessive dirt buildup or hot spots, lack of cleaning could void your warranty.