Joes Window Cleaning

Solar panels are a great investment for homeowners looking to reduce energy bills and embrace renewable energy. But like any other surface exposed to the elements, they get dirty—and that dirt can reduce their efficiency. If you’ve ever wondered how often you should clean your solar panels, you’re not alone.

At Joe’s Window Cleaning LLC, we specialize in solar panel cleaning services that help protect your investment and keep your energy production high. Let’s talk about when—and why—you should have them cleaned.

Why Solar Panel Cleaning Matters

Solar panels work best when they receive full sunlight. Dust, bird droppings, pollen, leaves, and even pollution can block sunlight from reaching the panels’ surface. Over time, this buildup can decrease your system’s efficiency by 10–25%, meaning you get less energy and lower savings.

Regular cleaning ensures your panels operate at peak performance, especially in dusty or pollen-heavy seasons.

How Often Should Solar Panels Be Cleaned?

While there’s no one-size-fits-all answer, the general recommendation is to have your solar panels professionally cleaned at least once or twice a year. However, certain factors can increase the need for more frequent cleanings:

Dusty climates or high pollen levels
Bird activity near your roof
Recent storms with heavy debris
Visible buildup or decreased energy output

If you notice your solar energy production is dipping without a clear reason, it might be time to clean the panels.

Signs Your Solar Panels Need Cleaning

A visible film of dust or grime
Sudden drop in solar power output
Increased utility bills despite sunny weather
Accumulation of bird droppings or leaves

Even if your panels appear clean from the ground, a closer inspection may reveal a layer of residue that’s impacting performance.

DIY vs. Professional Cleaning

While some homeowners consider rinsing panels themselves, professional solar panel cleaning offers several benefits:

Safety: Roof access can be dangerous. Our team is trained to handle heights and slippery surfaces safely.
Proper tools: We use non-abrasive tools and deionized water that won’t damage panels or leave spots.
Thorough cleaning: Professionals ensure every panel is cleaned evenly, improving your energy yield.

Seasonal Considerations

Spring and Fall are the best times for routine cleaning.
After pollen season, a spring cleaning can remove buildup.
In fall, clearing leaves and debris prepares panels for the lower-light winter months.
A post-storm check is also wise if your area experiences strong winds or hail.

Protect Your Investment with Joe’s Window Cleaning LLC

At Joe’s Window Cleaning LLC, we’re committed to helping homeowners get the most from their solar panels. Our expert team uses gentle, eco-friendly methods to clean your panels without voiding warranties or causing damage. We provide honest recommendations and reliable service you can trust.