Can Solar Panels Be Damaged by Hail

Hail is a concern for many homeowners considering solar installation, particularly those in regions prone to severe thunderstorms. The question of whether solar panels can withstand hail and what protection exists is valid and important to address before committing to a solar investment. Modern solar panels are engineered to withstand harsh weather, including significant hail impact, but understanding the standards, real-world durability data, and insurance coverage provides peace of mind.

This guide covers hail damage risks to solar panels, the industry standards that ensure durability, real-world failure data from major hail storms, insurance protection options, and practical steps to minimize risk. Whether you live in a hail-prone region like Colorado, Texas, or the Great Plains, or simply want to understand your panels’ resilience, this article provides comprehensive information to evaluate hail risk for your solar investment.

Understanding Hail and Solar Panel Risk

Hail forms in severe thunderstorms when precipitation encounters cold upper atmosphere layers, freezing raindrops and building layers of ice. Hail size ranges from pea-sized (0.25″) to softball-sized (4.5″) in extreme cases. Hail velocity during storms can exceed 100 mph, creating significant kinetic energy at impact.

Solar panels face hail on their glass surface. The front glass must be both transparent (to allow light through) and strong enough to resist impact without shattering. Manufacturers use tempered glass—treated through rapid heating and cooling to create compressive stress in the outer layers and tensile stress inside. This pre-stress makes tempered glass much stronger than ordinary glass: when struck, it either resists damage or, if broken, shatters into small granules rather than sharp shards.

Hail damage risk depends on hail size and velocity. Small hail (pea to marble size, less than 1″) causes no practical damage to modern solar panels. Medium hail (1-2″) typically bounces off without damage. Large hail (2-3.5″) can damage unprotected glass and cause cracks. Extreme hail (4″+) can damage even sturdy panels, though such sizes are rare except in the most severe supercell storms.

Most residential hail falls in the small to medium range, which modern panels tolerate routinely. In major hail storms with large stones, damage can occur, but modern panels have robust designs and insurance typically covers hail loss.

Industry Standards for Hail Resistance

The solar industry uses rigorous testing standards to certify panels against hail impact. The primary standard is IEC 61215 (International Electrotechnical Commission), which defines testing for photovoltaic modules. Part of this standard includes impact resistance testing.

IEC 61215 Hail Test:

The standard test fires ice balls at a stationary panel from a pneumatic gun. Modern panels are tested against:

25 mm (1 inch) hail impact: Ice balls are launched at 23 m/s (51 mph) across the panel surface at 11 impact points. Panels must survive without breaking. Almost all modern residential panels pass this test.

35 mm (1.4 inch) hail impact: Larger ice balls at 23 m/s. Premium and commercial panels are tested at this level. Many modern residential panels also pass this standard.

Manufacturers may also conduct higher-impact testing—some test 40-50 mm hail impacts at elevated speeds—to exceed minimum standards and verify safety margins. Premium panel manufacturers publish detailed test data showing resilience beyond IEC minimums.

Note that testing is static—panels are stationary during testing. Real-world conditions differ slightly: moving hail may have different angle impact. However, IEC testing remains the industry gold standard and reliably predicts real-world performance.

Real-World Hail Damage Data and Case Studies

Despite hail risk concerns, actual damage to solar panels from hail is surprisingly rare. Large-scale data from insurance companies, solar installers, and utility operators show that hail damage affects fewer than 1% of solar installations annually, even in high-risk regions.

2010 West Texas Hailstorm (Fort Worth Area): One of the most significant solar-focused hail events on record occurred in April 2010 in North Texas, where golf ball to tennis ball-sized hail (1.5-2.5″) fell across a region with growing solar installation base. Insurance data showed solar installations had roughly the same damage rate as traditional roofing—some damage occurred, but the vast majority of systems survived unharmed or with minor damage to a few panels.

2012 Midwest Derechos (Chicago/Illinois): Severe straight-line wind events with embedded hail caused damage to roofing and solar systems across Illinois and surrounding states. Solar panel damage was documented but not widespread—most systems survived, and damage was typically covered under homeowner insurance or manufacturer warranties.

2013 Colorado Hailstorm (Denver/Front Range): Golf ball-sized hail fell in Denver area, one of the most solar-intensive regions in the US with tens of thousands of installations. News reports covering damage focused heavily on roofing, vehicles, and siding. Solar damage was minimal and rarely highlighted, suggesting most systems survived.

Actuarial Data: Insurance companies analyze hail damage claims across regions. Solar-specific claims for hail damage remain at less than 0.5% of insured systems annually, even in high-risk states like Colorado, Kansas, and Texas. Homeowner insurance typically covers hail damage, with standard deductibles ($500-2,500).

The rarity of significant damage reflects panel durability: modern panels are engineered and tested to withstand the hail that naturally occurs. Extreme hail events (4″+ stones) are rare, and even then, damage isn’t guaranteed.

Types of Hail Damage to Solar Panels

When hail does damage panels, the damage typically appears as:

Small Cracks: Fine cracks in the glass surface without loss of glass or electrical isolation. The panel may continue operating with a small reduction in output (1-3%). Cracks can progress if the panel vibrates or thermal expansion/contraction stresses the fracture. Some cracks eventually lead to water infiltration and panel degradation.

Laminate Delamination: The glass and back layers separate from the EVA (ethylene vinyl acetate) adhesive layer, creating visible white or discolored areas. The panel remains functional but may have reduced lifespan as moisture can penetrate. Delamination doesn’t immediately reduce output but accelerates aging.

Complete Glass Breakage: Large hail or multiple impacts shatters the glass surface. If the break isolates the circuit (creates an open in electrical flow), the panel stops producing power. If the break doesn’t break electrical continuity, the panel may still operate at reduced efficiency with risk of short circuits and fire hazard. Broken panels should be replaced.

Edge Damage: Hail striking panel edges (less likely but possible) can damage the frame connection points or crack the glass edge. This is rare but can be problematic if the crack propagates to the electrical components.

Impact with Micro-fractures: Some hail impacts create invisible internal cracks in the silicon cells beneath the glass. The panel initially appears fine but has reduced output or experiences rapid degradation over months or years. This is difficult to diagnose without specialized equipment and is rare.

Minor cracks that don’t affect function may not warrant replacement—the panel continues operating for years. However, significant cracks, complete breakage, and delamination require panel replacement. A single damaged panel in a 20-panel system requires replacing that one module ($300-600 parts and labor), not the whole array.

Insurance Coverage for Hail Damage

Homeowner insurance policies typically cover solar panel hail damage under the “dwelling” or “property damage” section, just like damage to roofing, siding, or windows. Coverage details vary by insurer and policy, so review your specific policy.

Coverage Characteristics:

Deductible: Most policies have a standard deductible ($500-2,500) applied to each claim. Some insurers offer lower deductibles for solar specifically. If a hailstorm damages multiple panels, it’s typically one claim with one deductible, not per-panel.

Replacement Cost vs. Actual Cash Value: Some policies cover replacement cost (full replacement price), while others cover actual cash value (replacement price minus depreciation). Older panels may have higher depreciation, reducing insurance payout. Most homeowner policies offer replacement cost for solar if you request “replacement cost” endorsement.

Coverage Limits: Standard homeowner policies cap coverage at 80-85% of home value, though solar is usually included in this cap. High-value installations in high-value homes may hit coverage limits. Review your limits to ensure solar is adequately covered.

New Installation Timing: Some insurers require disclosure of new solar before installation. Proper disclosure ensures coverage; failing to report new solar might void claims. When installing solar, notify your insurer and ask about any coverage adjustments.

No Claims Impact: In most states, filing a weather-related hail claim doesn’t increase insurance premiums (unlike at-fault accidents). Hail is a natural disaster, not negligence. However, multiple claims in a short period might affect rates.

Self-Insuring Against Hail: Some homeowners choose higher deductibles ($2,500-5,000) to reduce premiums, self-insuring smaller losses. This makes sense in regions with low hail probability. If hail is frequent, lower deductibles are prudent.

Before installation, contact your insurance agent to confirm solar coverage, discuss deductibles, and ensure adequate limits. Most insurers view solar favorably and provide straightforward coverage.

Manufacturer Warranties and Hail Damage

Solar panel warranties typically cover manufacturing defects (defects in materials or workmanship) but not damage from environmental hazards like hail, wind, lightning, or earthquakes. These are considered “acts of nature” outside the manufacturer’s control.

Typical Warranty Coverage:

Standard panel warranties (25-30 years) cover defects causing more than 0.8%/year degradation but typically exclude environmental damage. However, some manufacturers offer extended or supplemental warranties covering weather damage, though these are uncommon in residential products.

Installation Warranty: The installer (not panel manufacturer) typically warrants their work, including damage from faulty installation. If poor mounting caused a panel to fail during hail, the installer’s warranty might apply, but this is rare—panel damage from hail is usually unrelated to installation quality.

What To Do After Hail Damage: If hail damages a panel:

1. Document damage with photos
2. File a claim with your homeowner insurance
3. Contact your solar installer; they can assess damage and arrange replacement if needed
4. The installer will coordinate with insurance for coverage

Most damage claims are approved under homeowner insurance, and replacement labor is typically covered. Your out-of-pocket cost is your deductible only.

Protective Measures and Risk Reduction

Beyond insurance, several steps minimize hail risk:

Panel Selection: Choose premium panels with documented hail testing to 35+ mm impacts. Brands like Panasonic, SunPower, LG, and Canadian Solar publish extensive test data. These panels cost 5-10% more but offer peace of mind in high-hail regions.

System Design: If trees surround your property, ensure they’re not likely to topple onto the array during severe storms. Ground-mounted systems can be designed with extra drainage to prevent water pooling. Roof-mounted systems benefit from proper bracing to prevent vibration during wind/hail events (vibration can propagate small cracks).

Geographic Location: If you’re deciding between properties, hail frequency varies significantly. The “Hail Alley” (Colorado, Nebraska, Kansas, and Wyoming) experiences frequent hail. The Southeast, Northwest, and California experience less frequent hail. Hail risk is one factor in location choice but shouldn’t be the only factor (solar irradiance, financing incentives, and electricity rates matter too).

Storm Sheltering: During active severe weather warnings, you can’t realistically protect panels, and attempting to cover a roof array is dangerous. Standard practice is to simply accept natural weather risk. Your insurance covers actual damage.

Regular Inspection: After significant storms, walk around your property or hire an inspector to check panels for visible damage. Catching damage early allows prompt insurance claims and repairs.

Cost-Benefit Analysis: Is Hail a Deal-Breaker for Solar?

For most homeowners, hail risk doesn’t justify rejecting solar. Consider the probabilities:

Hail Probability: In high-risk regions (Colorado, Kansas), hail storms occur 1-2 times per year on average, but direct impact on solar panels is much rarer. Less than 1% of installed systems in these regions experience hail damage annually.

Solar Economics: A 6 kW residential system generates $10,000-15,000 in electricity over 5 years and $60,000+ over 25 years. Even if a panel is damaged by hail ($500-700 replacement cost covered by insurance), the system still delivers enormous financial return. One damaged panel among 20 doesn’t significantly impact long-term savings.

Risk Comparison: Hail threatens many outdoor investments: vehicles, roofing, garden equipment, outdoor HVAC units. Homeowners in hail-prone regions accept these risks routinely. Solar risk is comparable to roof risk—both are covered by insurance.

Conclusion: Hail should not prevent solar adoption. Modern panels are durable, real-world damage is rare, and insurance provides adequate protection. If you live in a high-hail region, select quality panels, ensure adequate insurance coverage, and proceed with confidence.

Frequently Asked Questions

Summing Up

Solar panels are durable and engineered to withstand the hail that naturally occurs in most regions. Modern panels meet or exceed IEC hail impact standards, and real-world data from major hail storms shows damage is rare. Homeowner insurance provides coverage if damage occurs, protecting your investment. Hail should not be a barrier to solar adoption, especially given the 30% federal Investment Tax Credit available through 2032 and the substantial long-term savings solar provides.

If you’re concerned about hail protection or live in a high-hail region and want to discuss system design and insurance options for your property, our team can help. Call (855) 427-0058 or visit https://us.solarpanelsnetwork.com/ for a free consultation and to learn how solar can work safely and profitably in your climate.

Updated May 2026