Investing in solar panels is one of the most sustainable decisions you can make for both your home and the environment. These high-tech systems harness the power of the sun, providing you with a renewable energy source that can last for 25 years or more. But as with any major investment, you may wonder: How do you keep solar panels in peak condition? Is it like a car that needs regular tune-ups, or is it something you can just set and forget?
In this blog, we’ll cover everything you need to know about maintaining your solar panels so they continue to work efficiently for years to come.
Do solar panels need maintenance?
The good news is that solar panels require very little maintenance to function. Most solar panel systems are designed to be low-maintenance, especially if they’re installed at a tilt. The tilt allows rain to wash away most dirt, dust, and debris, reducing the need for regular cleaning. As long as there are no major obstructions and the system is in good working order, your panels should continue to produce energy without much intervention.
However, there are some instances where maintenance may be needed. The most common issues arise from dirt accumulation, debris, or weather-related factors that can obstruct your panels’ efficiency. Let’s take a closer look at what you can do to keep your system running smoothly.
How do you maintain solar panels?
If your solar panels are on a roof or an elevated structure, you’re in luck! Rain can usually help clean them by washing away any buildup of dirt or leaves. But what about during dry seasons or extended periods without rain? That’s where manual cleaning comes in.
Cleaning your solar panels
It’s generally recommended to clean your panels two to four times per year. This is a simple process that doesn’t require much time or effort. You can clean them with a garden hose or a leaf blower to remove any leaves or light dirt. If your panels are particularly dirty, you can use a soft-bristled brush with non-abrasive cleaner. The key is to clean the panels gently—avoiding harsh scrubbing or any tools that could scratch the surface.
Always clean your panels early in the morning or late in the afternoon, when they’re cooler. Never clean them during the hottest part of the day or use hot water, as this could cause thermal shock and potentially damage the panels.
In winter, snow can accumulate on your panels, reducing their efficiency. If this happens, you’ll want to clear it off as soon as possible. Use lukewarm water (not hot!) or a squeegee with a long handle to gently remove the snow. It’s critical to avoid using hot water, as the sudden temperature difference between hot water and cold panels can cause the glass to crack.
Monitor panel health
Monitoring the health of your solar panels is an essential part of maintenance. Many modern solar panel systems come with built-in monitoring apps that allow you to track your system’s energy output in real time. If your panels’ output starts to drop, it could be a sign that they’re blocked by debris or that something else is affecting their performance.
Monitoring systems also alert you if one of your panels malfunctions or stops working. This way, you can take immediate action to repair or replace the faulty panel before it affects your energy production too much.
Ground-mounted vs. rooftop panels: Does maintenance differ?
Whether your solar panels are installed on the roof or mounted on the ground can impact how often and how intensely you need to clean them. Ground-mounted systems are generally easier to access, so they might require a little more frequent cleaning, especially if they’re located in an area with a lot of dust or debris. Rooftop systems are more vulnerable to issues such as leaves or snow buildup, but they’re typically cleaned less often, thanks to the natural wash from rain.
Both types of systems benefit from periodic checks for debris and animal activity under the panels. If animals like birds or squirrels start nesting beneath your system, you might want to install critter guards to prevent further issues.
How does extreme weather impact your solar panels?
Solar panels are built to withstand extreme weather conditions. From high winds to heavy rain and even snow, well-installed panels are designed to last. In fact, the U.S. Department of Energy confirms that solar panels are quite durable, even in the face of severe weather like hailstorms and hurricanes. For example, after Hurricane Florence in 2018, North Carolina saw limited damage to solar systems, despite the storm’s intensity.
That said, while solar panels are tough, they’re not invincible. Rarely, they can suffer damage from hail, hurricanes, tornadoes, or lightning strikes. Fortunately, most solar systems come with warranties that cover damage caused by extreme weather. If your panels are damaged, your installer will usually help you repair or replace them.
The most common weather-related factor that can affect solar panel performance is heat. As temperatures rise above 77°F (25°C), solar panels lose around 1% of their efficiency for each additional degree. However, this isn’t a huge concern—your installer will consider local climate conditions during installation and may elevate your panels to allow better air circulation, helping to keep them cool and maintain efficiency.
How to repair or replace solar panels
While solar panels are low-maintenance, they can still experience issues over time. If you notice a drop in energy output, or if a panel appears physically damaged, it’s important to act quickly. For repairs, it’s best to contact the company that installed your system. If the panels are still under warranty, the installer will assess the situation and either repair or replace the panels at no extra cost.
In the case of physical damage to the panels, such as cracks or chips, this is typically covered under a separate equipment warranty. Your installer will guide you through the process of replacing the damaged panels. Keep in mind that solar panel installation and repair should only be done by professionals. Attempting to repair or replace panels yourself can be dangerous and may void your warranty.
Final thoughts
While solar panels require very little maintenance overall, it’s essential to keep an eye on them to ensure they stay in top condition. Regular cleaning, monitoring, and addressing issues like debris or snow buildup can help your panels function efficiently for years. With the right care, your solar system can continue to provide you with clean, renewable energy while saving you money on your energy bills.
If you ever need help maintaining or repairing your solar panels, don’t hesitate to reach out to your trusted installer. After all, solar energy is an investment in your home and the planet, and keeping it running smoothly will give you peace of mind and long-term savings.