Getting solar installed is a major first step in the road to creating an eco-friendly energy footprint. It helps you save money, takes pressure off the already overworked electrical grid, and sets your home up for a more resourceful future.

But that’s just the beginning. Keeping your system in check takes effective solar panel maintenance and proper maintenance takes knowing what to do, when, and why.

Here are our answers to the questions Synergy Solar hears from homeowners all the time about keeping their solar in the best condition!

Key takeaways

• Production naturally varies by season. Not every dip means something is wrong.
• Your Enphase app is your best early warning tool. Ignoring alerts for weeks can cost you real production.
• Wildfire smoke affects solar output in Sonoma County more than most homeowners expect.
• Panel cleaning is typically recommended once a year, or sooner after heavy ash or debris events.
• Adding a major appliance, pool, or EV without telling your installer can make your system look like it’s underperforming when it’s simply undersized for your new usage.
• If something seems off, a performance evaluation can tell you whether it’s a real issue or a normal variation.

Why does my system seem like it’s producing less than it should?

Several things can reduce output without anything actually being broken:

• Seasonal change: Production drops in fall and winter. Shorter days and a lower sun angle are expected — this is not a sign of a problem.
• Shading changes: A tree that didn’t shade your panels 3 years ago might now. Even partial shading on one panel can pull down output on nearby panels.
• Soiling: Dust, pollen, bird droppings, and wildfire ash all reduce how much sunlight reaches the cells.
• Age: Panels lose a small percentage of output per year. This is expected and was factored into your original system design when it was sized.

A sudden, sharp drop is different from a gradual seasonal one. If production fell quickly and hasn’t recovered, that’s worth looking into.

My electric bill went up. Does that mean my solar panels aren’t working?

Not necessarily. A higher bill is one of the most common reasons homeowners call, and in most cases it’s not a panel problem at all.

The more common cause: usage went up. A new appliance, a teenager home for the summer, running AC more often than last year, or an EV you started charging at home can all push consumption past what your system was sized to cover.

PG&E rate changes can also affect your bill even when your system is performing exactly as designed.

How does wildfire smoke affect solar production in Sonoma County?

Smoke scatters and blocks sunlight before it reaches your panels. During heavy wildfire events, production can drop for several days at a time, sometimes by a meaningful amount.

Ash settling on your panels compounds the problem. Rain clears a lot of things off a roof, but ash doesn’t always rinse off cleanly. After a significant smoke event, check your panels visually. If you can see visible ash or residue, schedule a cleaning.

My Enphase app shows a device offline or an error icon. What should I do?

Start with your home internet. Many Enphase alerts are the system losing its connection to your router, not a hardware failure. Restart your router, wait a few minutes, and check the app again.

If the alert returns and shows a specific microinverter as offline, pay attention to that. One offline microinverter won’t shut your whole system down, but it means that one panel is producing nothing. Left unresolved for weeks or months, the lost production adds up.

Heads up: Multiple devices offline, or the same alert returning after a router restart, is not a DIY situation. Contact your installer.

How often should I check my monitoring app?

Once a week is a reasonable habit for most homeowners. You don’t need to analyze it deeply — just a quick check to confirm things look normal for the time of year.

What to Watch for

• A full day showing zero production (outside of overcast or rainy weather)
• Any device that consistently shows offline
• Overall output that looks noticeably lower than the same period last year

Synergy monitors all systems it has installed and contacts customers directly when something looks off. The app gives you a real-time window between those check-ins, and it’s worth using.

What if I’ve been ignoring app alerts for a while?

Pull up your Enphase app now and scroll back through your production history. Look for any gaps, sharp dips, or error notifications you may have missed.

If something concerns you, don’t assume it resolved on its own. An offline microinverter that went unnoticed in March may have been producing nothing since March.

Can leaves and debris around my panels cause problems?

They can. Debris covering part of a panel reduces that panel’s output, and with String microinverter-based systems, nearby panels can be affected too.

Part of good solar panel maintenance is keeping panels reasonably clear. In Sonoma County, cleaning is typically recommended once a year. After fire season, or following a stretch of heavy pollen or dust, more frequent cleaning makes sense. Synergy follows up with customers when cleaning is warranted based on the system’s monitoring data.

As for equipment around the panels: keep the area around inverters and batteries clear of debris and make sure nothing is blocking access to the equipment. This matters both for performance and for safety.

I added an EV, a pool, or a heat pump. Do I need to tell my solar installer?

Yes! This matters more than most homeowners realize.

Your system was sized based on your usage at the time it was designed. A Level 2 EV charger can add thousands of kilowatt-hours of annual consumption on its own. A pool pump, an upgraded HVAC system, or a heat pump all change your energy load in ways that affect how well your existing solar array keeps up.

None of these additions damage your residential solar installation. The system keeps working. It may just no longer be big enough to offset your new usage, which shows up as higher bills.

Synergy can evaluate whether expanding your system makes sense and, in most cases, can do so without affecting your existing NEM (Net Energy Metering) status. That matters because NEM status protects the financial terms you’re currently on with PG&E.

How Synergy Solar supports existing customers

Synergy monitors all residential solar systems it has installed and reaches out to customers directly when performance issues appear. You don’t have to catch everything yourself.

All Synergy customers get a guide on their monitoring app at installation, including how to read production data and what to look for. If you’re a Synergy customer who has questions about your system, owners Mike and Justin stay personally involved. You’ll get a direct answer, not a call center.

Ready to get your system looked at?

If your bill is higher than expected, your Enphase app is showing something unfamiliar, or you just haven’t had anyone check your system in a while, call Synergy Solar. A performance evaluation gives you a clear picture of what’s working, what’s not, and what’s worth addressing.

Reach out to our professional team today!

📞 Call Synergy Solar: (707) 244-7300

🌐 Contact Us Online

Even though they’re built to withstand most natural wear and tear, your solar panels will still need a little TLC every so often.  In most cases, maintenance is simple: watch your system’s performance (if your system has a monitoring system), check for any visible damage, and clean the panels when needed.

If you’ve never handled solar panel maintenance before, we’ve put together the basics you should know about how to monitor, clean, and maintain your system.

TL;DR: Your Simple Solar Panel Maintenance Guide

For most homes, a straightforward routine works well:

• Check the monitoring app regularly (if your system has one)
• Inspect the array visually from the ground every few months
• Clean the panels minimally, once in early spring or when buildup is visible or clearly affecting performance
• Schedule professional service if output changes unexpectedly
• Keep nearby trees trimmed to reduce shading

This kind of plan keeps maintenance manageable and helps protect long-term system performance.

Check This First! Without Getting on Your Roof

A good maintenance routine does not require special tools or roof access. Several useful checks can be done from the ground.

1. Review the monitoring app if your system has one

The monitoring app is usually the first sign that something has changed. A sudden production drop, an outage alert, or numbers that do not match seasonal expectations can all point to a problem.

2. Watch for new shading

Trees grow over time. A branch that was not a problem last year may now reduce sunlight during key production hours. Even partial shading can affect output.

3. Look for debris buildup

After storms or windy days, leaves and debris can collect near panel edges or roof valleys. That buildup can trap moisture and dirt, so it is worth checking periodically.

4. Watch for pest activity

Birds and small animals sometimes nest near or under solar equipment or wiring. Left alone, that can lead to equipment damage or safety concerns.

5. Compare system performance to expectations

If utility bills rise while household energy use stays fairly consistent, the solar system may need a closer look. A quick review of monitoring data can help confirm whether production has changed.

How Often Do I Need to Clean My Solar Panels?

While there isn’t a universal schedule for cleaning your solar panels. we typically recommend twice a year, once in spring so your panels are clean going into the high production time of the year and once in fall. A practical approach is to inspect the system visually from the ground a few times a year and check your monitoring app regularly. If production appears lower than expected and weather does not explain it, it could be time for cleaning or a professional inspection.

When You Need More Frequent Cleanings

• Heavy agricultural dust or “dirt storms.”
• Trees that drop sap, leaves, or pollen directly onto the array.
• A local bird population that treats your panels like a lounge.
• Recent wildfires (ash is a major performance killer).
• Long droughts where there’s no rain to provide a free rinse.

Pro Tip: Don’t assume that the rain is washing the dust off your solar panels! Tough debris will stick through the rain and need to be cleaned off.

Best Practices for Solar Panel Cleaning

Safety should always come first.

The safest cleaning practices include:

• Clean early in the morning or later in the evening when panels are cooler
• Use clean water and a soft brush, sponge, or microfiber tool
• Rinse gently before wiping away dirt
• Avoid abrasive pads, metal tools, and harsh chemicals
• Do not use high-pressure washing
• Stop if the panels, wiring, or mounting hardware appear damaged

Pro Tip: Don’t put cold water on hot panels, don’t use aggressive scrubbing tools or pressure washers! Be gentle to your solar panel system.

When Should I Get Professional Solar Panel Maintenance?

Some situations call for professional support from the start.

A qualified technician should inspect the system when:

• The roof is steep, high, slippery, or hard to access
• Production drops without an obvious reason
• There is visible damage to panels, wiring, conduit, or racking
• The home has experienced a major storm or ash event
• Branches have fallen near the array
• The system is older and has not had a recent performance review

Cleaning Mistakes That Could Ruin Your Solar Panels

Many solar maintenance problems come from using the wrong methods or waiting too long to respond to a change in performance.

• Walking on the panels
• Using abrasive scrubbers or metal tools
• Applying soaps or chemicals that can leave residue
• Ignoring a sudden production drop
• Assuming rain handles every cleaning need
• Treating maintenance as only a cleaning task

The goal is not to clean as often as possible. The goal is to protect output, avoid damage, and catch issues early.

FAQ

Check out our primary FAQ page if you have more questions.

Get Your Solar System Checked by Synergy Solar!

Does your home’s solar need a checkup?

Synergy Solar provides local solar expertise, monitoring support, and performance evaluations to help determine whether a system needs cleaning, troubleshooting, or a broader maintenance plan.

Reach out to our professional team today!

📞 Call Synergy Solar: (707) 244-7300

🌐 Contact Us Online