Usually, the best way to clean solar panels is to rinse them with water. If a hose can reach the solar panel, a sponge or soft brush should also be used to scrub off accumulated grime. A clean solar panel will produce more energy.
It Increases Energy Production
California solar panel cleaning is regularly necessary to keep your PV system working efficiently. One study showed that dirty panels lose 3.5% of energy output, whereas clean ones produce about 15% more energy. Often, a simple rinse-down with a hose is enough to eliminate dust and dirt accumulation from solar panels. For more stubborn buildups, a squeegee or sponge may be necessary to scrub away the gunk. It’s essential to use a soft-bristled brush, not a hard-bristled one, as abrasion can damage your solar panels. You should also avoid using soaps and detergents, as they can leave behind streaks and residue that will prevent your solar panels from absorbing sunlight effectively. Vinegar is a better alternative to soaps, but you must make sure that it’s white vinegar and not cooking vinegar because this kind of vinegar contains high levels of acid that can cause damage to your solar panels. Other factors may influence the need for regular solar panel cleaning, like the location of your solar system. For example, installations in wooded areas will see more leaves fall onto the solar panels and obstruct sunlight. In dry climates, sand and ash buildups can also hinder the performance of your meetings. These environmental factors will be harder to control, but you should check your energy output to ensure it stays the same.
It Prevents Damage
When dirt and debris accumulate on solar panels, it can scratch them and reduce energy production. Cleaning prevents this damage and helps maximize your solar panel performance. The most straightforward way to clean your solar panels is with a garden hose and soapy water. The soap breaks down grime without damaging the solar panels. You can also use a non-abrasive sponge. The best time to clean your solar panels is in the morning or evening on a fantastic, overcast day. Avoid spraying cold water on your solar panels, which can crack them. In addition to essential washing products, there are also industrial-grade solvents that are safe for solar panels. These chemicals are available online and at hardware stores. While they are more expensive than regular household cleaning products, they are effective at breaking down dirt and pollen on the surface of solar panels. Solar panel owners in dusty regions may require more frequent cleaning.
Similarly, those living downwind of highways, airports, and other sources of pollution should clean their panels more frequently. If you use a cleaner on your solar panels, ensure it is deionized or distilled water. Hard tap water can leave mineral deposits behind on the solar panels that can damage them. Using too much cleaner on your solar panels can reduce efficiency and void the manufacturer’s warranty.
It Reduces Maintenance Costs
The frequency of cleaning depends on various factors, such as where you live, weather conditions, and pollutants in the air. Some areas may need to clean their solar panels more often than others as they experience a lot of dust buildup. Additionally, the pitch of your roof and other factors can also influence how dirty your panels are. The best way to clean solar panels is with a simple hose rinse-down. However, if this is not enough to get the job done, you can use a sponge or soft brush to scrub away any stubborn dirt clinging to the surface of your panels. It is always important to be gentle with the cleaning, as scratching or damaging the glass can dramatically reduce your panel’s energy production. If you clean your solar panels, shut down your system per the manufacturer’s instructions and only use non-abrasive cleaning products. Select an evening, morning, or overcast day when the panels will be excellent. Warm or hot surfaces can burn your skin and evaporate soapy water quickly – leaving behind a film that will reduce solar panel efficiency. Distilled or deionized water is the ideal choice for solar panel cleaning as it can help to eliminate minerals that might otherwise be left behind.
It Reduces Insurance Costs
If you have solar panels, you’ll want to clean them regularly to maintain their high efficiency and reduce maintenance costs. A dirty solar panel can produce 5% less energy than its clean counterpart. That might not sound like a lot, but it can quickly add up, and you’ll pay more for your electricity than necessary. You can clean your solar panels with a hose, non-abrasive sponge, or squeegee. It’s best to avoid using a pressure washer because that can damage the panels. If you must use one, take extra precautions, such as wearing a hard hat and harness. Even a slight decrease in energy production from dirt buildup can drastically increase your electric bill. Regular cleaning ensures solar panels produce as much energy as possible, reducing reliance on expensive grid electricity and decreasing greenhouse gas emissions. Most solar panels are set to face the sun, meaning they’re exposed to lots of dust and dirt. That’s especially true if you live downwind from a highway, airport, or farmland. These pollutants can cause a buildup of dust on your solar panels, which will eventually reduce their overall energy production.
In some cases, oily stains may also appear on your solar panels. These can be removed with a bit of isopropyl alcohol and a rag. Still, avoiding harsh chemicals on your solar panels is essential as they can damage the glass and negatively impact its efficiency.

Nouman Khan As a blogger, I have honed my writing skills to deliver engaging and informative content that resonates with my readers. I have a natural curiosity for all things related to the latest trends, and I enjoy researching and sharing valuable insights, strategies, and trends that empower entrepreneurs and professionals.