Are Solar Panels Hard To Maintain?

Are solar panels hard to maintain?

Solar energy adoption has been rapidly growing in the United States, with over 3 million homes now powered by residential solar photovoltaic (PV) systems as of 2020. With installations increasing over 30% year-over-year, solar panels are becoming a more mainstream means of household energy production (Pew Research Center). This growth raises an important question – are solar panels difficult to maintain over their 25+ year lifespan?

Basic Maintenance

Basic maintenance for solar panels includes routine tasks like cleaning the panels, checking electrical connections, and monitoring production. These basic maintenance tasks are relatively easy for homeowners to perform on their own.

Keeping solar panels clean is one of the most important maintenance tasks. Panels should be washed a few times per year using water, mild detergent, and a soft brush or sponge. This removes any accumulated dust, dirt, pollen, bird droppings that could block sunlight. Check connections to make sure all wiring is intact and secure. Also monitor your solar production regularly to watch for any decreases that could indicate an issue.

Overall, basic solar panel maintenance consists of simple, do-it-yourself tasks to keep the system operating efficiently. With just occasional cleaning and checks, most homeowners can handle the basics themselves. This routine care is key for optimizing solar production.

Inverter Lifespan

The inverter is one of the most important components of a solar panel system. According to EnergySage, a typical centralized residential string inverter will last about 10-15 years before needing replacement [1]. Since most solar panel systems are designed to operate for 20-25 years, the inverter may need to be replaced at least once over the lifetime of the system.

Inverters contain sensitive electronics and moving parts that can wear out over time. Factors like heat, humidity, power surges, and normal wear and tear can impact the lifespan of the inverter. Most solar panel manufacturers provide a 10-15 year warranty on new inverters, but inverters older than this may start exhibiting problems like reduced efficiency, shut downs, or failures.

To maximize inverter lifespan, proper maintenance like cleaning air filters and fans, updating software, and having annual checkups is recommended. But even with good maintenance, inverters do have a limited lifespan and homeowners should plan for a replacement around 10-15 years into their solar system’s life.[2]

Roof Maintenance

For roof-mounted solar systems, it’s important to continue regular roof maintenance to prevent leaks and damage. Although solar panels provide some protection from weather elements like sunlight, rain, hail, and snow, the roof underneath still requires inspection and upkeep. Make sure to check for missing, cracked, or damaged shingles, and repair as needed. It’s also critical to clear debris like leaves and branches from around the solar array, as they can lead to moisture buildup. According to this article, solar panels can help extend the lifespan of your roof by shielding it from UV rays, but leaks can still occur if the roof isn’t properly maintained.

Software Upgrades

As solar technology continues to advance, periodic software upgrades may be required to keep your system operating at peak performance (Energysage). Many solar inverters and monitoring systems now come with wifi connectivity that allows for remote software updates. Manufacturers will periodically release upgraded firmware to fix bugs, improve efficiency, and add new features to the system. Staying current on the latest software ensures compatibility with new batteries and devices that may be added down the road.

Upgrading the software is generally quite simple. Most systems can update automatically over the internet, or you may just need to download the latest software from the manufacturer’s website and update it using a computer connected to the inverter (Evergreen Electrical). However, major version upgrades may require a technician visit to perform more complex updates. Contact your installation company to find out if any software or firmware updates are available for your system.

Safety Inspections

It is recommended to have occasional safety inspections performed on your solar panels and photovoltaic system to ensure it is operating safely and to detect any damage issues early. According to Hypenergy, solar panel safety inspections look for loose connections, damaged cables, corrosion, ground faults, and other problems that could lead to hazards. Inspectors use thermal imaging cameras and other tools to thoroughly evaluate the system. Safety issues like damaged wiring or improper grounding can lead to fires or electrocution if not addressed. Regular inspections every 2-3 years can find these problems before they turn into bigger issues.


Like any system, solar panels can occasionally suffer from minor issues that affect performance. Being able to troubleshoot problems is an important maintenance skill for any solar panel owner. Some common troubleshooting steps include:

Checking connections – Loose, corroded, or improperly connected wires are a frequent cause of solar panel malfunctions. Inspect all connections thoroughly.

Testing voltages – Using a voltmeter, you can test the voltages at each connection point in the system. This helps isolate decreases in voltage to particular components.

Inspecting panels and mounts – Look for any physical damage, debris covering panels, shade, or alignment issues that could reduce energy production.

Resetting systems – For issues with smart electronics and software, a basic reboot or reset of the overall system can often resolve glitches.

Consulting troubleshooting guides – Most manufacturers provide troubleshooting manuals that provide step-by-step processes for diagnosing issues. For example, see the ThermoKing Solar Panel troubleshooting guide.

Calling for support – If self-troubleshooting attempts are unsuccessful, consulting a solar professional or manufacturer technical support can help identify any components needing replacement.

With patience and basic electrical know-how, many minor solar panel problems can be addressed without professional help. However, don’t hesitate to call in an expert for complex or safety-related issues.

Professional Maintenance

Most experts recommend having professional maintenance done on solar panels at least once a year to keep them optimized and catching any potential issues early (Kimberly Magerl, Roof Gnome). Professional maintenance technicians have the expertise and tools to fully inspect all components of the system and identify and repair any problems.

Some key benefits of periodic professional maintenance include:

  • Cleaning – Professionals use specialized equipment to thoroughly clean panels, increasing energy production.
  • Inspections – Technicians inspect all electrical connections, wiring, and roof attachments for wear.
  • System Optimization – Adjustments can be made to maximize energy output.
  • Repairs – Minor repairs, such as loose wiring or cracked solar cells, can be fixed before becoming larger issues.
  • Software/Firmware Updates – The latest software is installed for optimal performance.

Professional maintenance helps ensure solar panels continue operating at peak efficiency for their full lifespan. The typical cost ranges from $300 – $700 per visit (Atlantic Key Energy). While an added expense, the long-term energy savings and system protection make it a worthwhile investment for most homeowners.


When purchasing solar panels, an important consideration is the manufacturer’s warranty. Most major solar panel brands such as Canadian Solar, SunPower, and LG offer product warranties that cover repairs, replacement parts, and replacement panels for certain issues over a period of 25 years (“Solar Panel Warranties: What To Know”). These comprehensive warranties provide peace of mind and protect against expensive repair and replacement costs down the road.

Specifically, solar panel warranties typically cover defects in materials and workmanship that cause modules to underperform or fail. They may also cover damage from corrosion, abnormal degradation, and even extreme weather events like hail (“The Ultimate Guide to Solar Panel Warranties”). Manufacturers will repair or replace panels that exhibit these issues free of charge within the warranty coverage period.

When researching solar panels, carefully compare the fine print of warranties. Though most cover similar defects, the length, terms and scope can vary between manufacturers. Consulting with your solar installer on warranty specifics can provide peace of mind that you are covered for potential solar panel issues over decades of expected useful life.


In summary, maintaining solar panels does not have to be difficult. With some basic routine maintenance like cleaning the panels and inspecting connections, homeowners can keep their solar panel systems running efficiently. More intensive maintenance like inverter replacement may be needed periodically over the system’s lifetime, but can be minimized by choosing quality equipment and having it installed properly. With solar warranties that cover certain components for 10-25 years, any major repairs needed during that time will be covered. While solar panels do require some maintenance and care over their lifespan, it is generally easy and inexpensive for homeowners to handle themselves. With a few simple tasks performed regularly, solar panel systems can produce clean energy with minimal upkeep required.

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