How Long Do Solar Panels Last? - An Expert's Perspective

The industry standard for the lifespan of most solar panels is 25 to 30 years. Most reputable manufacturers offer production warranties of 25 years or more, and the average break-even point for the energy savings of solar panels occurs six to ten years after installation. Solar panels, also known as photovoltaic or photovoltaic panels, are designed to last for a long time - in fact, many solar panels installed as early as the 1980s are still operating at expected capacity.1 Not only are solar panels remarkably reliable, but the longevity of solar panels has increased dramatically over the past 20 years.2 In addition to decades of effective performance, many solar energy manufacturers back their products with performance guarantees in their warranties. With the advancement in technology, new solar panels are expected to last between 25 and 30 years. After that period, solar panels can drastically lose their efficiency.

The good news is that the longevity of solar panels has improved significantly over time as technological and material advances have been made. In fact, most modern solar panels are designed to last around 30 years. The best way to ensure the longevity of your solar system is to find a reputable solar installer. Investing in high-quality solar panels improves the performance of your system and protects it against serious degradation. The efficiency of solar panels indicates how effectively they convert the sunlight they absorb into energy.

Most solar panels come with a 25- to 30-year warranty, although they may keep working for longer. When considering an investment in commercial solar energy, it's logical to ask how long solar panels last. Commercial solar panels typically have 72 solar cells and measure around 6 feet by 3.25 feet, slightly smaller than a plywood sheet. Solar panel systems include numerous parts that keep the system running, such as solar batteries and inverters. There's usually no need to clean solar panels regularly, unless your area is very susceptible to dust, dirt, pollen, or sand due to an arid climate. Working with an accredited solar installer is essential to ensure that your panels last as long as possible.

While solar systems require little regular maintenance, some solar energy providers offer comprehensive maintenance packages over the life of their products to ensure that they continue to generate clean, affordable and reliable energy efficiently for decades. Solar panels usually contain 60 or 72 cells, although there are some on the market with as few as 32 and as many as 96 solar cells. If your solar panels are underperforming after a rain or having been sprayed with water from a hose, or if you see an unusual increase in your utility bill, this may indicate that this is an electrical problem that needs to be addressed by a professional. Real-time monitoring solutions allow your supplier to manage the daily operations of your solar panel system. If you're considering investing in solar panels for your home, you're likely wondering how long that investment will last.

By the year 30, solar panels degrade to the point that their efficiency rate is below what the manufacturer considers optimal.