The Truth About Solar Panel Lifespan: Is 25 Years Just the Beginning?

Energy Environment Treasure: The Truth About the Lifespan of Photovoltaic Modules: Is 25 Years Just the Beginning?

As the wave of new energy sweeps across the globe, photovoltaic (PV) power stations have become a significant driver of energy transition due to their clean and efficient characteristics. However, the lifespan of photovoltaic modules remains a crucial concern for many businesses and individuals interested in the solar sector. After all, whether these modules can withstand the test of nature and continue to generate stable power over their expected lifespan of 25 years directly impacts economic benefits and the effectiveness of energy transition. Today, we will delve into this topic and uncover the mysteries surrounding the lifespan of photovoltaic modules.

1. The Doubts About Photovoltaic Lifespan: Can the “Thin Body” Endure 25 Years of Wind and Sun?

When mentioning photovoltaic modules, many people envision the thin panels protected by single or double layers of glass. Can these modules really endure 25 years of outdoor exposure to wind and sunlight without damage? This question undoubtedly troubles many potential solar developers.

2. Real Cases of Longevity: Photovoltaic Modules Outlast 25 Years

To address this question, let’s look at some real-life examples. The oldest photovoltaic power station in China is located at the Gansu Natural Energy Research Institute and has been in operation since 1983, making it 40 years old. Despite the solar cells showing signs of aging, the station still generates power, which is successfully integrated into the grid. This case clearly demonstrates that photovoltaic modules can indeed last over 25 years.

The oldest photovoltaic power station in Europe is situated in the Ticino region of southern Switzerland and has also been operational for 40 years. Research indicates that at least 70% of the modules at this station meet a 35-year lifespan. This data further affirms the durability of photovoltaic modules.

3. Analyzing Photovoltaic Module Composition: High-Tech Materials Ensure Longevity

How do photovoltaic modules achieve such an extended lifespan? This can be attributed to their unique composition of materials. Tempered Glass Shell: The outer shell of photovoltaic modules is made from ultra-clear tempered glass produced through a rolling process. This glass boasts excellent light transmittance, high mechanical strength, and superior flatness. Its compressive strength is 4-5 times greater than that of ordinary glass, providing ample protection for the internal solar cells under extreme weather conditions.

Photovoltaic Backing Protection: The backing material of the module plays a crucial role in shielding the solar cells and encapsulants from environmental factors such as humidity and heat. It offers multiple functions, including corrosion resistance, weatherproofing, oxidation prevention, and insulation, further extending the lifespan of photovoltaic modules.

4. Research Data Support: Lifespan of Photovoltaic Power Stations Continues to Rise

In addition to real-life examples and an analysis of component composition, research data also provides robust support. A survey conducted by the Lawrence Berkeley National Laboratory reveals that the average lifespan of photovoltaic power stations increased from approximately 21.5 years in 2007 to about 32.5 years in 2019. Among 19 photovoltaic modules for which data was collected, 17 had been in use for 30 years or more. This data undoubtedly bolsters our confidence in the longevity of photovoltaic modules.

Through real-life examples, an analysis of module composition, and supportive research data, we can conclude that the lifespan of photovoltaic modules can indeed reach 25 years or even longer. With continuous advancements in photovoltaic technology and improvements in product quality, we have reason to believe that the lifespan of these modules will further extend, contributing significantly to energy transition and sustainable development.

Special Note: The above content is original and cannot be reproduced or excerpted without authorization. Image source: Internet, will be removed upon request.