The upside of solar panel maintenance: Minimal work, maximum savings

Solar panels practically take care of themselves, but a little maintenance can go a long way.

Going solar can translate into serious savings, but with five-figure upfront costs, you’ll want to make those panels last as long as possible.

Solar panel systems are incredibly durable and require little to no maintenance over their 25+ year lifetime. Monitoring your system’s production and keeping your solar panels clear of debris are the best things you can do to maintain their performance and output. Unless you live in an area with relatively low rainfall and a lot of smog, dirt, or dust, you shouldn’t have to worry too much about regular maintenance.

But periodic checks don’t hurt and can help you identify issues as they arise. If something does go wrong, your equipment’s warranties should cover replacement and repair costs. Here’s what you need to know about solar panel maintenance.

Key takeaways

• Solar panels generally require little maintenance.
• Solar panel warranties cover any manufacturing defects that might affect your panels’ performance.
• If your solar panels need cleaning, professional cleaners are a great option.
• You can install a solar monitoring system to determine if your panels decline in performance.

How often do solar panels need to be maintained?

For most homeowners, solar panels need almost no attention over their decades-long lifespan. The rare issues that do occur usually happen right after manufacturing and are caught before or during installation. The only regular maintenance they may need is a good cleaning a couple of times a year, but even that can be taken care of with enough rain.

“Solar panels don't really go bad. Sometimes you may pull it out of the box and it doesn't work, but that's about it. Very seldom have I seen a solar panel go bad once it’s installed,” Duane Wright, president of Fused Solar and Roofing, told EnergySage. “As long as it rains enough to remove bird droppings, dust, and pollen, that’s pretty much all the maintenance needed.”

Solar inverters, on the other hand, are more prone to needing service. If you see an unusual drop in production, it’s often an inverter problem—caused by overheating, electrical surges, or improper installation. Fortunately, these issues are usually straightforward to fix.

“Most maintenance we do involves replacing or repairing microinverters. If you have 25 microinverters on a 25-panel system, there are 25 fault points, and they’re underneath the panels on the roof,” Wright said. “With string inverters, there's only one fault point, and it’s at ground level, meaning I don’t have to get on the roof.”

Solar panel cleaning

Should you clean your solar panels?

Solar panels are installed at an angle, allowing rainfall to naturally rinse away most dirt and debris. However, snow, smog, dust, or pollen buildup can still reduce production—especially during dry periods. If you notice a dip in output and suspect your panels are dirty, a professional cleaning service is the safest and most effective option. Your installer can usually recommend a trusted provider.

How do you know when your solar panels need maintenance?

You’ll know your system needs attention if its output declines more than it should. A damaged, dirty, or otherwise malfunctioning solar panel system won’t perform well. In most cases, you can narrow down the culprit of faster-than-usual degradation by monitoring your electric bill, using system software, or installing a solar monitoring system.

Most of the time, keeping panels free of debris is enough to keep them running efficiently, but watching for changes in production helps you catch issues early.

Wright, who’s based in hot and humid Florida, explained that some production dips are seasonal and nothing to worry about: “Compared to April and May, June, July, August, and September are actually lower production months because of the heat,” he said. “At the same time, consumption tends to go up because of AC use.”

So your consumption goes up and production dips—that's usually the problem rather than anything to do with the products themselves, he said.

Can weather damage your solar panels?

Solar panels are built to withstand hail, strong winds, and other rough weather—but they’re not indestructible. Even though weather damage is uncommon, purchasing panels with a strong warranty is important in case you need to repair or replace them.

How much does solar panel maintenance cost?

Fortunately, annual solar panel maintenance costs are pretty low, considering how infrequently it’s needed. Solar panel systems are designed to be relatively self-sufficient, but a few scenarios require professional maintenance.

General solar panel system maintenance

Although solar panel systems don’t usually require active or routine maintenance, some homeowners purchase a solar operations and maintenance (O&M) package for added peace of mind. O&M service packages are essentially insurance plans for your solar panel system that include things like cleaning, electrical system checks, and pest control measures. These plans typically cost a few hundred dollars per year.

Replacing or repairing solar equipment

Solar panel systems rarely need repairs or replacements because they’re stationary and have no moving parts. If something does fail, your manufacturer’s warranty will often cover the defective component—whether it’s a panel, inverter, tracking system, or monitoring equipment—and your solar installer or another qualified company should perform the service.

Keep in mind that most warranties only cover parts, not labor, so it’s important to read the fine print to understand any costs you might be responsible for.

Re-roofing after installation

Most installers will ensure that your roof can support solar panels for their 20- to 30-year lifetime. If they think your roof can't hold up, a good solar company will advise you to either repair or replace it before moving forward with an installation. Still, sometimes you can’t predict or avoid these things.

If, for whatever reason, you need to re-roof after installing solar panels, expect to pay about $200 per panel to remove, store, and replace your solar equipment.

Trimming trees to increase sun access

Tree trimming and removal prices depend on the size and height of the tree, ranging from less than $100 to $1,000 or more. The taller the tree and the denser your neighborhood, the more you’ll pay to prune or cut it down.

What if your solar company goes out of business?

Your original installer should be your go-to contact for your maintenance needs, but some companies won’t be around for the whole lifespan of your solar energy system. If your solar installer goes out of business, you’ll need to find another qualified company to handle service.

Start by contacting your equipment manufacturer—they can often recommend local companies authorized to work on your system. Given that any installer warranty you had with your original company will likely disappear with their business, it’s important to ensure the new company's work done to your system won’t void your manufacturer’s warranty, too.

As the solar industry adapts to changing policies and regulations, more companies are offering operations and maintenance (O&M) packages for “orphaned” systems. Wright is one such installer: “I just added a dedicated service truck and hired a licensed electrician in June, nd] he’s been busy because of orphaned systems,” he said.

Solar panel warranties protect your investment

Solar panel manufacturers offer a few warranties that guarantee coverage in the unlikely event of an issue. A good solar panel warranty saves you the maintenance costs associated with any manufacturing defects over the lifetime of your system.

Power output warranties guarantee a specified production level over the warranty term (usually 25 years). For instance, a manufacturer might offer a warranty ensuring peak power output won't fall below 85% for 25 years.

Panels also come with a product warranty that protects against defective parts. Today, most solar panel companies offer at least 25 years of protection. The same product warranty sometimes covers inverters and racking equipment, but not usually. Separate warranties for each component are more common, though that could change as the industry evolves.

Bottom line: Solar panel upkeep is minimal and easy

For most homeowners, maintaining a solar panel system comes down to keeping an eye on production and letting the rain do the cleaning. These systems are built to last decades with minimal intervention. When issues do arise, they’re often covered under robust manufacturer warranties.

By pairing basic monitoring with occasional professional cleaning (if needed) and ensuring qualified technicians handle any repairs, you can protect your investment and enjoy reliable, low-cost energy for years.