Solar Panel Warranty And Performance Guarantees Explained

Solar Panel Warranty And Performance Guarantees

Solar energy is becoming increasingly popular, and as more homeowners invest in solar panels, understanding the warranties and performance guarantees offered by solar panel manufacturers and installers is essential.

This comprehensive guide will break down the complexities of solar panel warranties and performance guarantees, so you can make an informed decision when investing in a solar system for your home.

solar pv system convert sunlight into electricity in a dessert

Solar Panel Warranty and Performance Guarantees Explained

The Importance of Solar Panel Warranties

When investing in a solar system, solar panel warranties protect your investment by ensuring that your solar equipment performs at its best throughout its lifespan.

Solar panel warranties provide peace of mind, knowing your solar investment is protected against unforeseen issues, such as panel failure or underperformance.

Two Main Types of Solar Panel Warranties

solar panel product warranty

The solar panel product warranty covers material defects and workmanship issues in the solar panel itself.

Most manufacturers offer a product warranty ranging from 10 to 25 years, depending on the panel manufacturer and model.

Solar Panel Performance Warranty

The solar panel performance warranty guarantees a specific amount of power output throughout the panel’s life.

Leading manufacturers typically offer a 25-year performance warranty, which includes a specified degradation percentage over time.

solar pv system produce energy in a field

What Solar Panel Warranties Cover

Material Defects

Solar panel warranties protect against material defects, such as issues with solar cells or improper installation.

Manufacturers will typically cover the cost of repair or replacement for panels experiencing material defects.

Workmanship Issues

Workmanship issues, such as faulty wiring or poor system design, are typically covered under the solar panel product warranty.

Solar panel manufacturers will cover the cost of repair or replacement for panels experiencing workmanship issues.

What Solar Panel Performance Warranties Cover

Guaranteed Output

Solar panel performance warranties guarantee a certain percentage of the panel’s initial power output throughout the warranty period.

For example, a 25-year performance warranty may guarantee that the panel will produce at least 80% of its initial power output after 25 years.

solar inverter installed in a home

Light-Induced Degradation

Solar panels experience a small amount of degradation in the first year, known as light-induced degradation (LID).

The performance warranty will generally cover the drop in output due to LID.

The Fine Print of Solar Panel Warranties

It’s essential to read the fine print of your solar panel warranty, as there may be limitations or exclusions.

For example, some warranties may not cover shipping costs for replacement panels or may require you to pay a small amount for labor and installation costs.

Solar Equipment Warranties

In addition to solar panel warranties, other components of your solar system, such as inverters and batteries, may come with their warranties.

These warranties may vary in length and coverage, so it’s essential to research each component’s warranty when investing in a solar system.

solar pv system in a solar farm

Solar Installer Guarantees

Some solar installers offer additional guarantees on their workmanship or the system’s production.

These guarantees may provide homeowners additional protection and peace of mind, ensuring their solar system is installed correctly and performs as expected.

Homeowner’s Insurance Policy

Your homeowner’s insurance policy may cover certain damages or issues not covered by your solar panel warranty or installer guarantees.

Review your policy and discuss any potential coverage gaps with your insurance agent.

How to Maximize Your Solar Panel Warranty and Performance Guarantee

Choose a Reputable Solar Installer

Selecting a reputable solar installer is essential to ensure your solar panels are installed correctly and receive the best warranties and guarantees.

Research Solar Panel Manufacturers

Not all solar panel manufacturers offer the same warranties and performance guarantees.

Research different manufacturers and their products to determine which warranties and guarantees best suit your needs and provide the highest level of protection for your investment.

two men do solar installation

Regular System Monitoring and Maintenance

To maintain the integrity of your solar panel warranty and performance guarantee, monitoring your system’s performance regularly and performing any necessary maintenance is essential.

This may include cleaning the panels, inspecting the wiring and connections, and checking for any signs of wear or damage.

Understand the Warranty Terms and Conditions

Familiarize yourself with the terms and conditions of your solar panel warranties and performance guarantees.

This will ensure you know what is covered and what is not and any actions you may need to take to maintain your warranties and guarantees.

Keep Documentation

Keep a record of all warranty and guarantee documents and any maintenance records, receipts, or correspondence with your solar installer and panel manufacturer.

This information may be required for a warranty claim or performance guarantee dispute.

Solar Panel Warranties and Home Resale Value

A comprehensive solar panel warranty and performance guarantee can positively impact your home’s resale value.

Potential buyers may view a well-maintained solar system with solid warranties and guarantees as a valuable asset, increasing their confidence in the home’s solar energy potential.

solar panel system graphic


Understanding solar panel warranties and performance guarantees is crucial to investing in a solar system for your home.

By researching different manufacturers and installers, maintaining your solar system, and familiarizing yourself with the terms and conditions of your warranties and guarantees, you can protect your solar investment and enjoy the benefits of clean, renewable energy for years.

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