Solar panels are one of the most reliable home improvements you can invest in. Once they’re installed, they can generate electricity for years, or decades, to come. At least, that’s when they’re working properly and efficiently.
Servicing your panels will be an essential part of this. But, that begs the question, how often to service solar panels on a year basis should homeowners aim for? For most homes, this is once a year.
But, a few other factors could play a role in this.
How Often Should You Service Solar Panels?
For the majority of homeowners, the recommended solar panel service frequency in the UK is once every 12 months. An annual inspection gives engineers the opportunity to:
- Check the condition of your solar panels
- Inspect electrical connections
- Test inverter performance
- Assess overall system efficiency
- Spot early signs of wear and tear or damage
- Confirm the system is operating safely
Even if your solar panels seem to be working normally, a yearly inspection can uncover hidden issues that gradually reduce performance over time.
Think of it like servicing a car. You mightn’t notice a developing issue while driving, but routine maintenance helps prevent small faults from becoming much larger, and more expensive, ones.
Why Annual Checks Are Recommended
Solar PV systems are exposed to the elements every day of the year. Rain, wind, snow, high temperatures, and UV exposure all contribute to gradual wear across the system. While solar panels themselves are extremely durable, other elements (like the inverters and connectors) can deteriorate over time.
An annual solar panel check helps make sure these components keep working as intended. Regular inspections also let engineers spot issues before they affect your energy consumption or become safety concerns.
What Happens if You Don’t Have a Solar Panel Maintenance Schedule
It’s still tempting to think you can postpone servicing if your system seems to be generating electricity without any obvious problems. But, many faults develop slowly and can stay hidden for months before there’s any noticeable issue.
Without regular inspections, you could see a range of repercussions. Some of these are more common than others.
Reduced Energy Generation
One of the most common consequences of missed servicing is declining system performance. A dirty panel, damaged connector, or ageing inverter might only reduce the output slightly, at first. In time, however, these small losses can add up faster than many homeowners realise.
Because performance usually decreases gradually, many homeowners simply don’t notice their system is creating less power than it should.
Higher Electrical Bills
If your solar panels generate less electricity, you’ll rely more on the grid for your electricity. Even a relatively small drop in efficiency can increase household energy costs over the course of a year.
Regular servicing makes sure you’re getting the maximum return on investment from your solar panels.
More Expensive Repairs
Many solar PV faults are quite affordable to fix when they’re caught early. Replacing a worn connector or tightening loose electrical connections, for example, is a lot more affordable than replacing an inverter caused by overheating. Routine inspections let engineers resolve these minor issues before they get large and expensive.
Electrical Safety Risks
Solar PV systems operate using high-voltage DC electricity. While systems are designed with safety in mind, damaged cables, loose connections, or moisture ingress can increase the risk of electrical faults if left untreated.
Professional inspections include electrical safety tests to identify problems that aren’t visible from ground level.
Can Skipping an Annual Solar Panel Check Affect Your Warranty?
In some cases, yes. Most manufacturers recommend regular maintenance to make sure equipment works properly throughout the warranty period. While warranty requirements vary depending on the manufacturer and installation, keeping up with routine inspections shows your system has been properly maintained.
If a fault develops later, having a documented servicing history might also make diagnosing the issue much easier. It’s always worth checking the terms and conditions of the warranty to double-check any servicing recommendations.
What’s Included in an Annual Solar Panel Check?
There are more than a few common misconceptions about solar power checks, with some of the more notable revolving around what’s actually included in them. A typical annual solar panel check includes:
- A visual inspection of the solar panels
- Mounting system assessment
- Electrical safety testing
- Inverter performance checks
- Wiring and connection inspection
- System efficiencies analysis
- Thermal imaging (where appropriate)
- Identification of any developing faults
- Recommendations for repairs
Instead of waiting for something to fail, these checks provide reassurances that your system is working safely and efficiently.
What About Battery Storage?
If your solar system has battery storage, the entire system needs to be inspected, not just the panels. It’s often an essential part of keeping your system working effectively. An inspection here starts off the same as a system without a battery, but also includes:
- Battery condition checks
- Charge and discharge performance
- Safety testing
- Electrical connection checks
- Overall system integration
Servicing both the panels and the battery together provides a more complete understanding of your system’s performance.
Create a Solar Panel Maintenance Schedule
The easiest way to stay on top of everything is to create a solar panel maintenance schedule, as it makes sure you don’t overlook anything. Every few months, this should include:
- Visually inspecting solar panels from ground level
- Checking for obvious dirt, debris, or storm damage
- Monitoring your energy consumption
Yearly, on the other hand, you’ll need to:
- Arrange a professional solar PV health check
- Test electrical components
- Inspect inverter performance
- Review overall system efficiency
- Get and act on maintenance recommendations
Following a consistent maintenance schedule helps protect your energy savings, and the long-term value of your investment.
Book Your Annual Solar Panel Check Today
If it’s been more than a year since your system was professionally inspected, or if you’ve never had one before, now’s the perfect time to book one.
ServiceMy’s experienced engineers carry out comprehensive inspections and repairs to make sure your solar system is working to its full potential. Book your annual PV health check today, and ask about our reminder service to make future inspections stress-free.
