Key Takeaways:

Understanding Solar Panel Warranties: How They Differ

Each product, workmanship, and performance warranty covers different risks.
A product warranty covers manufacturing defects or faults in the solar panels.
A workmanship warranty covers installation-related issues and ensures proper installation standards for a limited period.
A performance warranty ensures panels maintain expected energy output over time, accounting for gradual efficiency loss.

Introduction

Installing solar panels in Singapore is a long-term investment. Designed to operate efficiently for at least 25 years, a solar system continues to generate savings well beyond the initial installation cost. With a consistent electricity demand, a well-installed system can offset monthly utility bills and deliver predictable returns over time.

To maintain these savings over the long term, the system must continue performing as expected. This is where the solar panel warranty becomes important, protecting long-term performance and cost certainty. Read on to explore what it covers and how it offers long-term value.

Why Solar Panel Warranties Matter in Singapore

Singapore’s high humidity, frequent rainfall, and strong sunlight can impact solar system durability and performance. While modern panels are built to withstand these conditions, warranties act as a safety net if issues arise. A good warranty scheme supports solar system reliability, helping you maintain stable energy output and overall returns throughout the system’s lifespan.

What are the Main Types of Warranties?

1. Product Warranty

A product warranty covers manufacturing defects or faults in the solar panels themselves. In Singapore, these typically last between 10 and 15 years, although some international brands offer coverage of up to 25 years. This warranty usually includes repair or replacement of defective panels, but site visits, diagnostics, or labour may not always be included. Product warranties are important for protecting against early component failure.

2. Workmanship Warranty

A workmanship warranty protects against installation-related issues such as faulty wiring, improper mounting, or inverter setup errors. Coverage generally ranges from 1 to 10 years, with the first 1 to 2 years commonly serving as the Defect Liability Period. While this warranty does not cover routine maintenance, it ensures that installation quality meets professional standards.

3. Performance Warranty

This warranty guarantees that solar panels will maintain a certain level of energy output across their operating lifespan. The standard duration is 25 years, often promising at least 90% performance after 10 years and around 80% after 25 years. This warranty directly addresses the solar panel degradation rate, which refers to the gradual loss of efficiency as panels age. This occurs at 1% each year on average. Lower degradation rates translate to more predictable energy production and better long-term returns.

What to Consider Before Committing

1. Warranty Duration

Choose solar panel warranties that align with your investment timeline. As a general benchmark, a 25-year performance warranty and a 10 to 15-year product warranty are considered industry standards. Longer warranties often reflect stronger manufacturer confidence in their technology and materials.

2. Coverage Scope

Not all warranties are equal. Check whether the warranty also covers inverters, mounting structures, or monitoring systems. Broader coverage can significantly reduce unexpected expenses in the long run, especially since inverters often have shorter lifespans than panels.

3. Transferability

A transferable warranty can enhance property value if you decide to sell your home. Some warranties automatically transfer to new owners, while others require formal documentation. This is relevant for homeowners looking to install a solar panel for home use with long-term resale considerations.

4. Exclusions and Limitations

Always review exclusions carefully. Certain warranties may not cover damage caused by extreme humidity, salt exposure in coastal areas, or improper maintenance. Given Singapore’s climate, ensure your panels are rated for local weather conditions to avoid inadvertently voiding your coverage. These factors also influence the overall solar panel lifespan that Singapore homeowners can realistically expect.

5. Claims Process

If a problem occurs, contact your installer or manufacturer promptly. Keep proof of purchase, warranty certificates, and maintenance records readily available. Most reputable providers will inspect the issue and verify whether it falls within warranty coverage. If approved, the provider will repair or replace affected components without additional cost, subject to warranty terms.

How to Choose the Best Warranty

A strong solar panel warranty protects against defects, while reflecting the quality of both the equipment and the installer. By understanding warranty types, coverage limits, and long-term implications, homeowners and businesses can make more informed decisions when adopting solar.

If you need guidance on the most suitable warranty type, working with a reputable solar company in Singapore, like LHN Energy, can provide clarity. As a solar industry pioneer since 2018, we deliver comprehensive solar solutions for residential, commercial, and industrial projects. This includes consultation, solar panel installation, maintenance, monitoring, and guidance on warranty terms.

Solar Panel Warranty: What You Need to Know in Singapore