Solar Panel Cracked or Damaged: What to Do and When to Replace

Understanding Solar Panel Damage

Solar panels are very durable, but hail, debris, animals, and accidents can damage them. Understanding what type of damage you're looking at helps determine if the panel still works or needs replacement.

Types of Panel Damage and Their Impact

Type 1: Surface Scratches or Minor Scuffs

• These are cosmetic and don't affect performance
• Very common on older systems from cleaning, debris, or weathering
• No action needed; panels continue operating normally

Type 2: Cracks in the Glass (Not Affecting Cells)

• Visible cracks in the glass covering but not in the solar cells beneath
• Usually caused by hail, impact, or thermal stress
• These typically don't affect electrical performance significantly
• However, they allow water infiltration, which will eventually cause failure
• Panels with glass cracks should be replaced within 1-3 years to avoid further degradation

Type 3: Cracks in Solar Cells

• Visible cracks running through the actual solar cells (dark/blue area)
• These reduce the cell's ability to produce power
• Impact depends on crack location and extent
• A small hairline crack: 5-15% loss from that cell
• A major crack splitting the cell: 50%+ loss from that cell
• Panels with significant cell cracks should be replaced

Type 4: Delamination

• The protective layers inside the panel separate from each other
• You'll see whitish areas, discoloration, or separation of layers when looking at the edge
• This is a serious manufacturing issue
• Panels delaminate due to poor installation, moisture infiltration, or manufacturing defects
• Delaminated panels will fail within months to years
• Should be replaced under warranty immediately

Type 5: Burn Marks or Discoloration

• Dark spots, burn marks, or areas of discoloration on the panel
• This indicates a hot spot or internal arcing
• These are serious faults that will only get worse
• Replace immediately; these pose fire hazards

Type 6: Physical Dents or Deformation

• Hail or impact causing visible denting in the panel frame or surface
• Minor dents don't affect performance
• Severe dents that distort the panel might affect water drainage or cause glass stress
• Extensively damaged panels should be replaced

Diagnosing the Impact on Performance

One damaged panel out of many:

If you have a 25-panel system and one has a major crack:

• That single panel might produce 50-75% of its normal output
• Over 25 panels, this is a 2-4% reduction in total system output
• If the panel is in a string, the impact might be larger (depends on system configuration)
• You might not even notice a 2-4% reduction in monitoring

Multiple damaged panels:

• Multiple failures suggest a systemic issue or poor installation
• You should investigate the root cause
• Contact your installer to inspect the entire system

Hail and Weather Damage

After a severe hailstorm, you should:

• Inspect your roof from the ground using binoculars or a drone camera
• Don't climb on the roof after a hailstorm; structural damage might be present
• Look for visible cracks, dents, or discoloration on panels
• Check if your system is still producing at expected levels
• Document any damage with photos for insurance purposes

File an insurance claim if:

• You have homeowner's insurance that covers solar panels (not all policies do)
• Damage is visible and photographed
• You have a professional inspection documenting the damage
• Repair cost exceeds your insurance deductible

Your solar warranty vs homeowner's insurance:

• Solar equipment warranty covers manufacturing defects, not hail damage
• Homeowner's insurance covers weather damage (if solar is covered in your policy)
• Make sure solar panels are specifically listed in your policy
• You may need to add a rider to cover solar specifically

When to Replace a Panel

Definitely replace if:

• Multiple cracks in solar cells reducing output by 50%+
• Signs of delamination or internal separation
• Burn marks or discoloration indicating hot spots
• Water damage or rust visible on the frame
• Complete glass breakage

Monitor closely if:

• Minor hairline cracks in cells (5-15% impact)
• Small cracks in the glass not affecting cells
• Minor dents without other damage
• Check the panel's output regularly; if it declines, replace it

No action needed for:

• Cosmetic scratches or scuffs
• Very minor surface cracks not reaching cells
• Normal weathering and aging

Replacement Process and Cost

Panel replacement cost:

• Single panel cost: $300-$600 depending on wattage
• Professional installation labor: $200-$500 per panel
• Total cost per panel: $500-$1,100
• If the panel is under warranty, cost might be zero or just labor

Warranty coverage:

• Manufacturer's defect warranty: typically 10 years
• Performance warranty: typically 25 years
• Hail damage: usually NOT covered by panel warranty
• Check your specific warranty documentation

Insurance claim process:

• Contact your homeowner's insurance with photos and damage documentation
• Get a professional inspection ($300-$500; may be covered by insurance)
• File a claim with inspection report and repair estimates
• Insurance typically covers repair cost minus deductible
• Deductible is often $500-$1,500 per claim

Preventing Future Damage

After hail damage:

• Check that your roof is still sound and not damaged
• Inspect gutters and drainage to ensure water flows properly
• Monitor remaining panels closely for further degradation
• Consider upgrading to a policy with solar coverage if you don't have it

Rodents and animals:

• Install critter guards under panels to prevent nesting and chewing
• Cost: $300-$800 for a full system
• Prevents damage to wiring and panels from animals

Debris and branches:

• Trim trees regularly to prevent branches from falling on panels
• Remove debris from roof regularly
• Maintain gutters to prevent debris accumulation