What is the Warranty on Solar Panels and Inverters?

Sun quotes in VIC, Australia, an important consideration when choosing a solar system for your home in VIC. In this article, we will discuss everything you need to know about Solar Panel and Inverter Warranty Guide including what they cover, how long they last, and how to choose the right warranty for your needs.

What is a solar panel warranty?

A solar panel warranty is a formal guarantee provided by the manufacturer that ensures the quality and performance of the solar panels for a specified period. This warranty serves as a safety net for consumers, offering protection against defects, malfunctions, or underperformance.

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There are generally two main types of warranties associated with solar panels:

  • Manufacturer’s Warranty (Materials or Workmanship Warranty)
  • Performance Warranty

1. Manufacturer’s Warranty (Materials or Workmanship Warranty)

This type of warranty covers any defects in the materials or workmanship of the solar panel. If a panel fails due to a manufacturing defect or poor quality of workmanship, the manufacturer is obligated to repair, replace, or refund the faulty panel. Manufacturer’s warranties typically last between 10 to 12 years, although some premium brands offer longer periods.

2. Performance Warranty

Performance warranties guarantee that the solar panels will produce electricity at a certain efficiency level for a specified period, usually 25 years. These warranties assure that the panels will not degrade faster than a certain rate, ensuring that they will still be producing a minimum percentage of their original output by the end of the warranty period. For example, a performance warranty might guarantee that after 25 years, the panels will still produce at least 80% of their initial output.

What is an inverter warranty?

An inverter warranty is a formal assurance provided by the manufacturer that guarantees the quality and performance of the solar inverter for a specified period. Solar inverters are critical components of a solar energy system; they convert the direct current (DC) generated by solar panels into alternating current (AC) that can be used in your home or fed back into the grid.

Types of Inverter Warranties:

  • Standard Manufacturer’s Warranty
  • Extended Warranty

1. Standard Manufacturer’s Warranty

This is the basic warranty that covers defects in materials and workmanship. If the inverter fails due to a manufacturing defect within the warranty period, the manufacturer is obligated to repair or replace the unit. Standard warranties for inverters usually range from 5 to 12 years.

2. Extended Warranty

Some manufacturers offer the option to purchase an extended warranty, which can prolong the standard warranty period. This can be particularly useful for high-quality inverters that are expected to have a long operational life.

What’s Typically Covered

  • Material Defects: Any defects in the materials used in the inverter.
  • Workmanship: Any defects arising from the manufacturing process.
  • Software: Some warranties may cover software issues that affect the inverter’s performance.

What are the benefits of a good solar panel and inverter warranty?

  • Quality Assurance: Manufacturers that offer extensive warranties are often more confident in the durability and performance of their products. A good warranty is often a sign of a high-quality product.
  • Long-Term Performance: Performance warranties, in particular, guarantee a certain level of energy production over an extended period, ensuring that your solar system remains efficient and continues to generate savings on your energy bills.
  • Simplified Maintenance: Some warranties include or offer optional maintenance services, which can help ensure that your system is always operating at peak efficiency.
  • Financial Security: A good warranty can save you from unexpected out-of-pocket expenses for repairs or replacements, ensuring that your investment remains financially sound over the long term.


Solar Panel and Inverter Warranty Guide are an important part of any solar installation. By understanding the different types of warranties available and what to look for, you can ensure that you are protected in the event of a problem.

When choosing a solar installer, be sure to ask about their warranty policy and make sure that it is in writing.


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