Solar panels are designed to last decades, but even the best systems need periodic inspections to stay safe, efficient, and compliant with electrical standards. Many homeowners assume solar is “set-and-forget,” yet unseen issues can quietly reduce production or create long-term damage.

Whether your system is brand-new or more than 10 years old, a professional solar system inspection is one of the smartest ways to protect your investment. Here’s everything you need to know before scheduling one.

Why Solar Inspections Matter

Solar inspections aren’t just about checking panels. A proper inspection protects:

• Energy production
• Roof health
• Wiring integrity
• Warranty compliance
• Long-term safety

Small issues—like a loose connector or worn flashing—can escalate into costly system failures if ignored.

Signs You Need a Solar System Inspection

Homeowners often schedule inspections when something seems “off,” but many signs are subtle. Look for:

1. Sudden drops in production

Even a 10–20% decline can indicate wiring or optimizer issues.

2. Monitoring going offline

If your app shows “No Data” or “Offline,” that’s a red flag.

3. Error codes on your inverter

Flashing lights, warnings, or shutdowns require professional diagnostics.

4. Some panels producing, others not

Uneven output usually means connection problems or damaged components.

5. Roof leaks under or around panels

Often caused by outdated or incorrect flashing.

6. Buzzing, clicking, or humming from equipment

Normal inverters are quiet—new sounds can signal trouble.

7. Storm damage or hail impact

Cracked panels, bent racking, or compromised seals need immediate inspection.

8. Critter activity

Birds, squirrels, and raccoons love nesting under panels and chewing wiring.

9. You recently bought a home with solar

A previous owner’s documentation doesn’t guarantee the system is functioning safely.

If you notice any of these, scheduling an inspection can prevent bigger issues down the line.

What a Professional Solar Inspection Includes

A real solar inspection is far more than a quick visual check. Homeowners often look at panels and think everything is fine—but the most important issues are hidden under the array, in the wiring, and within electrical components.

A full inspection typically includes:

1. Electrical Diagnostics

• Voltage testing
• Current and output checks
• String condition testing
• Verification of grounding
• Identification of wiring wear or damage

2. Panel Condition Review

• Cracks, hotspots, or delamination
• Signs of weather or hail damage
• Dirty or shaded panels
• Backsheet or frame issues

3. Roof & Flashing Inspection

Roof penetrations must stay watertight; professionals check for:

• Worn or outdated flashing
• Loose mounts
• Sealant deterioration
• Water intrusion indicators

4. Inverter & Optimizer Testing

Techs evaluate:

• Error logs
• Inverter behavior
• Temperature issues
• Optimizer performance
• Manufacturer updates or recalls

5. Racking Inspection

Structural integrity matters for safety. This includes:

• Loose bolts or clamps
• Bent rails
• Corrosion
• Unsecured wiring

6. Monitoring System Check

Your monitoring app should:

• Display accurate data
• Communicate consistently
• Track each panel’s production

If monitoring is offline, your system can still function—but you won’t know if something is wrong.

How Often Should Homeowners Schedule Solar Inspections?

Most systems benefit from:

• Annual inspections for optimal performance
• Post-storm inspections after hail or severe weather
• Pre-sale inspections when selling or buying a home
• Pre-roof replacement inspections before detach & reset work

Older systems—especially those 6+ years old—should be checked every 6–12 months.

Common Issues Found During Inspections

Even well-installed systems develop issues over time. The most common problems technicians discover include:

• Loose or corroded connectors
• Failed optimizers
• Aging inverters
• Damaged wiring from critters
• Outdated or failed flashing
• Faulty grounding
• Panel microfractures
• Monitoring equipment malfunctions

Catching these early prevents expensive repairs and production loss.

What Happens After the Inspection?

A proper solar inspection includes:

• A detailed explanation of findings
• Recommended repairs (if needed)
• Confirmation of system safety
• A performance health report
• A plan to restore system efficiency

Many issues can be repaired on the same visit, depending on parts availability.

Why Professional Inspections Are Better Than DIY Checks

Solar systems involve high voltage and delicate components. Homeowners should never:

• Remove panels
• Open junction boxes
• Access live wiring
• Attempt electrical troubleshooting

A licensed technician ensures everything is handled safely and complies with electrical codes.

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