Image provided by Aurora Solar

In Denver, Colorado and the surrounding Front Range region, it’s especially important to consider the soiling of solar panels due to the area’s unique combination of environmental factors. The semi-arid climate means rainfall is relatively scarce, providing fewer natural cleanings throughout the year. Springtime brings a heavy influx of pollen from native trees like cottonwoods and pines, which can form a sticky film on panels that resists light rain. Add to that the region’s frequent winds and dry conditions, which stir up dust from nearby plains and construction sites, and solar arrays can accumulate a surprising amount of grime. This buildup can reduce energy production by several percent—often during peak solar months—making periodic inspection and cleaning a smart investment for maximizing performance and system returns in the Denver area.

Our proprietary cleaning methods will get the system back up producing to its fullest potential, allowing you to reap the maximum benefits of the asset on your roof. After the cleaning, the solution we use will coat the surface of the panels for up to a full year that stops the buildup of pollen, dirt and even helps with snow build up.

Soiling on solar systems around the Denver area can vary from 5-10% per year depending on various factors. Aesthetics aside, this soiling could equate to 100’s of dollars depending on the size of your system. For example: a 4.5 kW system with 10% soiling ends up costing the system owner ~ $100 over the course of the year.  A panel cleaning almost pays for itself at that point!

Vanguard can help with panel cleanings a la carte, or we can couple the cleanings with other services under our Platinum Shield maintenance plan.