Finding a cracked solar panel can be surprising, especially if the system has been operating normally. Even if the panel still appears to be producing power, a cracked module should be treated as a potential electrical and fire-safety concern until it has been inspected and safely removed or replaced.

This article explains what to look for, what not to touch, and when to contact a qualified installer or electrician.

First: Treat the Panel as Energized

Solar panels can produce DC voltage whenever light is hitting them. Turning off the inverter, opening the AC breaker, or shutting down monitoring equipment does not necessarily make the panel itself electrically safe. PV systems can also remain hazardous during service or emergency conditions if they are not properly isolated and verified.

For safety:

Do not touch the cracked glass, frame, wiring, connectors, or mounting hardware.

Do not spray the panel with water.

Do not attempt to tape, glue, seal, or “patch” the panel.

Do not continue operating the system with a known broken panel unless a qualified solar professional has evaluated the system and confirmed the damaged module has been safely isolated.

Gigawatt recommends that cracked or broken solar panels be removed from the active system for safety. The exact removal process depends on the system design, inverter type, rapid-shutdown equipment, battery configuration, and local electrical code requirements.

Why a Cracked Panel Matters

A solar panel is designed as a sealed electrical device. The front glass helps protect the cells, conductors, encapsulant, and internal electrical paths from weather and mechanical damage. Once the glass is cracked, the module may be more vulnerable to moisture intrusion, insulation problems, hot spots, arcing, ground faults, or further physical failure.

Some cracked panels may still show voltage or continue producing power, but that does not mean they are safe to leave in service. Visible damage should be treated as a warning sign, not just a cosmetic issue.

Step 1: Look for Signs of Impact

From a safe distance, look for clues that the panel may have been struck by something. Do not climb onto the roof unless you are trained and equipped to do so safely.

Common signs of impact include:

• A “starburst” or spiderweb crack pattern.
• A single point where cracks radiate outward.
• Broken or displaced glass fragments.
• Dents, chips, or scratches on the module frame.
• Damage that lines up with a tree branch, falling debris, hail, roof work, or nearby construction.
• Scuff marks, scrape marks, or foreign material on the glass.
• Multiple cracked modules in the same area after a storm.

Impact damage is important to document because it can help determine the likely cause and may be relevant for warranty, insurance, or installer review. Take clear photos from the ground if possible. Include wide photos of the array and close-up photos of the damaged panel if they can be taken safely.

Step 2: Check Whether the Panel Appears Breached

A “breach” means the protective surface or sealed structure may be open enough for water, dirt, or air to reach areas that are normally protected.

Signs that the panel may be breached include:

• Open gaps in the glass.
• Missing pieces of glass.
• Visible internal solar cells or silver conductors.
• Moisture, fogging, bubbles, or discoloration under the glass.
• Delamination, which may look like cloudy patches or separation between layers.
• A lifted or distorted backsheet.
• Cracks that extend to the edge of the module or under the frame.
• Loose, damaged, or exposed wiring on the back of the panel.

A breached module should not remain connected to the system. Moisture and damaged insulation can increase the risk of ground faults, nuisance shutdowns, electrical shock hazards, or heat-related failure.

Step 3: Look for Signs of Heat or Electrical Damage

Heat marks are especially important. They may indicate a hot spot, damaged cell area, poor connection, arcing, or another electrical fault.

From a safe distance, look for:

• Brown, black, yellow, or melted-looking areas.
• Burn marks on the front glass, backsheet, junction box, cables, or connectors.
• Warped backsheet material.
• Melted plastic, cable insulation, or connector housings.
• A strong electrical or burnt-plastic smell near the array.
• Smoke, sparking, popping sounds, or visible flame.

If you see smoke, fire, active arcing, or smell burning, move away from the system and contact emergency services. Do not attempt to disconnect rooftop wiring yourself.

Step 4: Shut Down the System Using the Approved Shutdown Procedure

Use the normal shutdown procedure provided by your installer, equipment manufacturer, or system documentation. Many systems have labels near the inverter, service equipment, or rapid-shutdown switch.

A typical shutdown may include turning off the inverter, opening the PV disconnect, turning off the AC breaker, or activating rapid shutdown, but the correct process varies by system.

Important: shutdown controls may reduce system voltage in certain areas, but they do not make the solar panel glass, module leads, or all DC conductors automatically safe to handle. A qualified person should verify the system condition before touching or removing equipment.

Step 5: Have the Broken Panel Removed From the System

Gigawatt’s general recommendation is that a cracked or broken panel should be removed from the active PV circuit and replaced or otherwise handled according to the module manufacturer’s instructions, local electrical code, and applicable disposal or recycling requirements.

Removal should be performed by a qualified solar installer or licensed electrician. This is especially important for:

• Roof-mounted systems.
• Grid-tied systems.
• Systems with batteries.
• Systems with optimizers or microinverters.
• High-voltage string inverters.
• Panels with visible heat damage.
• Panels with damaged wiring or connectors.
• Any system where the owner is unsure how the array is wired.

Do not simply unplug a solar panel in daylight unless you are qualified and the system has been properly shut down and verified. DC connectors can arc if disconnected under load.

What Information to Send Gigawatt

To help us review the situation and recommend next steps, please send:

1. A wide photo of the full solar array.
2. A close-up photo of the cracked panel, taken safely.
3. Photos of any suspected impact point, burn mark, melted area, damaged wire, or broken connector.
4. The inverter model and any battery model, if applicable.
5. Any error codes or alerts shown in the app, inverter display, or monitoring portal.
6. The date the damage was first noticed.
7. Whether there was recent hail, high wind, falling debris, roof work, or other nearby activity.
8. Whether the system is still operating or has been shut down.
9. Your site address or general location so code and service considerations can be reviewed.

Please do not climb onto the roof or handle live electrical equipment to collect this information. Photos from the ground are acceptable if that is the safest option.

Can a Cracked Panel Be Repaired?

In most residential PV systems, a cracked solar panel is not considered a field-repairable item. Surface sealants, tape, resin, or glass repair products are not a reliable way to restore the panel’s original electrical insulation, weather resistance, mechanical strength, or listing.

A damaged panel should typically be replaced rather than repaired. Whether the panel qualifies for warranty, insurance, or other coverage depends on the cause of damage, product terms, installation conditions, documentation, and inspection findings.

Should I Keep the System Running Until Someone Comes Out?

Gigawatt recommends caution. If a panel is visibly cracked, breached, or showing signs of heat, it should not remain in normal operation. The safest next step is to shut the system down using the approved shutdown procedure and have the damaged module isolated or removed by a qualified professional.

If you are unsure whether the system is safely shut down, contact your installer, electrician, equipment manufacturer, or Gigawatt support before taking further action.

Important Safety Notice

This article provides general safety guidance for residential solar customers and DIY installers. It is not a site-specific inspection, electrical design, warranty determination, or authorization to perform electrical work. PV systems can involve hazardous DC voltage, roof fall hazards, fire risk, utility interconnection requirements, and code requirements that vary by location.

Gigawatt can help review available information and recommend next steps based on the details provided, but final diagnosis, repair, replacement, and code-compliant removal should be performed by qualified personnel familiar with the specific system.