If you’ve recently installed a solar panel system and are noticing clicks, hums, or creaks, you might be wondering if it’s normal. While most solar panels are designed to operate quietly, some noises can be heard depending on the time of day, weather conditions, or specific equipment included in your system.
Follow our team at Solar Bear Orlando as we take a closer look at what’s considered normal and when you should take a second look at your solar setup.
Why Solar Panels Are Generally Quiet
If you didn’t know, solar panels themselves don’t have moving parts. Unlike a generator or an HVAC system, there isn’t a motor inside that could create vibration or sound. Generally, solar panels should run silently while they absorb sunlight and convert it into electricity.
Then what is the sound that you are hearing? Well, any humming or clicks you may hear typically come from the supporting equipment in the system, such as inverters, wiring, or mounting hardware.
Common Sources of Solar Panel Noise
If you’ve noticed some sounds around your solar array, here are the most common reasons:
Inverters
Think of the inverter as the brain of your solar system. It converts direct current (DC) from the panels into usable alternating current (AC) for your home. String inverters can sometimes produce a buzzing or low humming noise during the day when they are working the hardest.
At night, when they aren’t producing energy, they should be quiet.
Rooftop Expansion and Contraction
The sun here in Central Florida can heat your roof, causing materials to expand and contract. This can cause small popping or creaking noises around the hardware that mounts your panels into place.
Wind
On breezy Central Florida days, you might be able to hear whistling or whooshing noises as the wind moves around and under the solar panels. If installed properly, this should be minimal, but it isn’t uncommon to hear a little wind noise when it’s especially windy.
Loose Wiring or Hardware
If you hear rattling or clanking sounds, it may mean that a wire clip or piece of hardware has come loose. While usually minor, this should be checked out by the installer to prevent damage to your panels or roof.
When Noise Might Signal a Problem
While most sounds are harmless, there are times when you’ll want to address the noise, as it could mean that there’s something wrong with your panels.
- Persistent Loud Buzzing: If your inverter is unusually loud, it may be overheating or struggling to operate efficiently in the heat.
- Constant Rattling: This could indicate loose racking or hardware that needs tightening.
- New or Sudden Noises: If you didn’t hear anything for months and suddenly notice a new sound, it’s a good idea to schedule an inspection.
Tips to Reduce or Prevent Solar Panel Noise
If you want to keep your solar system as quiet as possible, here are some steps you can take:
- Choose Microinverters or Optimizers: like string inverters, microinverters are mounted directly to each panel and make little to no noise.
- Regular Maintenance: Annual inspections can catch loose wiring, clips, or mounting hardware before they become noisy problems.
- Quality Installation: Partnering with a trusted installer like ours at Solar Bear Orlando ensures your panels are mounted securely and designed to minimize vibration and wind noise.
More Soar Energy Tips > Our Ultimate Guide to Bird Proofing Your Solar Panels
The Bottom Line
So yes, to answer the question, it’s normal for solar panels to make some noise, especially from inverters or roof expansion. Remember, though, most of these sounds are mild and harmless. But if you notice persistent rattling, loud buzzing, or new noises, it’s worth calling in our professionals to check your system.
Ready to Go Solar?
If you’re considering installing a solar array or have questions about your current system, Solar Bear Orlando is here to help. Our team provides professional installation and support to keep your home energy-efficient and stress-free.
Contact Solar Bear Orlando today at (727) 353-3886 for a free solar quote and experience how quiet, clean energy can power your home!