Solar Panel Warranties: What Is Actually Covered

Solar Panel Warranties: What Is Actually Covered

Solar panel warranties typically include two main components: product warranties covering manufacturing defects and performance warranties guaranteeing a minimum power output level. Understanding what’s actually covered is crucial because most panels last 25-30 years, and you need to know your protection throughout that lifespan. We’ll break down exactly what you’re getting—and what you’re not.

The Two Types of Solar Warranties

When you invest in solar panels, you’re protected by two distinct warranty types that work together but cover different situations.

Product Warranties (Equipment Warranty) cover manufacturing defects and material failures. These typically last 10-12 years and protect you if your panels develop issues like glass cracks, frame corrosion, solder joint failures, or junction box problems due to poor workmanship or faulty materials. If your panel stops working entirely due to a manufacturing defect within this period, the manufacturer will repair or replace it at no cost.

Performance Warranties (output warranty) guarantee your panels will produce a minimum level of electricity over 25-30 years. Most manufacturers guarantee 80-85% of the rated capacity after 25 years. For example, a 400-watt panel might be guaranteed to produce at least 320 watts after 25 years. If your panel’s output drops below this threshold due to manufacturing defects, the manufacturer covers the replacement cost.

The key distinction: product warranties fix broken equipment, while performance warranties compensate for gradual degradation beyond normal expectations.

What’s NOT Covered by Solar Warranties

Solar warranties have important limitations that homeowners often overlook during the purchasing process.

Installation and Labor Costs are not covered by manufacturer warranties. If a panel fails, you’re responsible for paying an electrician to remove and reinstall a replacement. This can cost $300-$800 per panel, which adds up quickly.

Weather and Natural Disasters fall outside standard coverage. Damage from hail, hurricanes, lightning strikes, heavy snow load, or falling trees isn’t typically covered. This is why homeowners insurance matters more than you might think. Review your homeowners policy to confirm solar systems are included.

Normal Wear and Degradation isn’t covered. All solar panels experience natural degradation of 0.5-0.8% annually—this is expected and not a warranty claim. Performance warranties only kick in if degradation exceeds this normal rate.

Inverter Failures may or may not be covered depending on whether the inverter is included in your equipment warranty. Many manufacturers cover inverters for 10 years while panels have 25-year warranties. After 10 years, inverter replacement becomes your responsibility. Check your specific warranty documentation.

Labor and Transportation for warranty claims are typically the homeowner’s responsibility. You’ll need to arrange the removal and installation of replacement panels.

Extended Warranties and Additional Protection Options

Beyond manufacturer warranties, several protection options exist for comprehensive coverage.

Workmanship Warranties are offered by installation companies and cover their labor for 5-10 years. This protects you against poor installation practices, loose connections, or improper mounting—problems that aren’t the manufacturer’s responsibility. Quality installers often include this automatically.

Equipment Protection Plans can cover inverters, wiring, and other balance-of-system components for extended periods. Some plans offer coverage for labor costs associated with replacements, which is a significant advantage.

Homeowners Insurance should be your primary protection against weather damage and theft. Contact your insurance agent to ensure your solar system is covered and understand any deductibles. Some insurers offer discounts for homeowners with solar installations.

Extended Service Agreements available from some installers can provide 24/7 monitoring, maintenance, and rapid response to issues. While these cost extra, they offer peace of mind and ensure problems are caught early.

When evaluating total cost of ownership, factor in the cost of these optional protections against the likelihood of needing them. A well-installed system in a temperate climate might rarely need claims, while systems in hail-prone areas justify the additional investment.

How to Use Our Solar Warranty Cost Calculator

Understanding what you’ll actually spend on solar involves calculating potential warranty-related costs alongside equipment expenses. Use our solar cost and savings calculator to estimate your complete solar investment, including contingencies for maintenance and potential service needs. This tool helps you understand the true financial picture over your system’s 25-year lifespan.

Reading Your Warranty Documentation

Don’t skip the fine print—it’s where warranty exclusions live.

Review the Coverage Period: Note the exact duration for product warranties (typically 10-12 years) and performance warranties (typically 25-30 years). These dates start from your installation date.

Check the Degradation Rate: Performance warranties specify an acceptable annual degradation rate. Ensure you understand at what efficiency loss the manufacturer becomes liable.

Verify Claim Requirements: Some warranties require professional installation by certified technicians or annual inspections. Failure to meet these requirements can void coverage. Confirm your installer meets all requirements.

Understand Transferability: If you sell your home, check whether warranties transfer to the new owner. Many manufacturers offer reduced-coverage transfers, which affects your home’s resale value.

Identify Manufacturer Financial Stability: A warranty is only valuable if the manufacturer remains in business. Tier 1 manufacturers with strong financials offer more security than newer brands that might not survive 25 years.

Frequently Asked Questions

Are solar panel warranties transferable if I sell my home?

Most manufacturers allow warranty transfer to new owners, though often with reduced coverage. You’ll typically need to contact the manufacturer and provide proof of the sale. Some warranties transfer at full value, while others drop to 50% coverage or have shortened remaining periods. Check your specific warranty terms, as this varies significantly between manufacturers. Transferable warranties can increase your home’s appeal to buyers and its resale value.

What happens if my panel stops working during the warranty period?

If a manufacturing defect causes complete panel failure, the manufacturer will send you a replacement panel at no charge. However, you’re responsible for labor costs to have the failed panel removed and the replacement installed—typically $300-$800. The manufacturer won’t cover removal, transportation, or installation. This is why extended labor warranties from installers are valuable for many homeowners.

Does homeowners insurance cover solar panel damage?

Standard homeowners insurance may cover weather-related damage to solar panels similar to other home structures, but coverage varies significantly by policy and provider. Some insurers exclude solar systems entirely, while others include them as part of your dwelling coverage. You’ll need to contact your insurance agent to confirm coverage, understand any deductibles, and verify that solar damage claims won’t significantly increase your premiums. Some insurers offer special solar endorsements with better coverage terms.

Related reading: Solar Permits and Inspections: Timeline and Costs.