How Long Do Solar Panels Last?
This is part of our guide to buying solar panels.
Solar panels generally have a life expectancy of 25 to 30 years, but that doesn’t mean they stop working once they reach this age. Solar panels can still produce electricity after this period. Still, the 25- to 30-year benchmark is usually the point when investing in a new system makes practical sense. Solar panels gradually lose efficiency over time, operating at around 80% of their original capacity near the end of their lifespan. Manufacturers often include warranties that guarantee a specific energy output at the 25-year mark.
What Factors Affect Solar Panel Lifespan?
Several factors influence how quickly or slowly solar panels degrade. Understanding them can help you proactively extend your equipment’s lifespan. Here’s what to consider:
Quality of Materials
Premium solar panels, crafted with high-quality materials, generally have slower degradation rates than budget alternatives. Look for products tested for durability in harsh weather conditions to endure over time.
Solar Panel Type
Monocrystalline panels have the most extended lifespan with high efficiency and durability. Polycrystalline panels have a lifespan comparable to monocrystalline, while thin-film panels tend to degrade more quickly.
Installation Practices
Proper installation can significantly enhance solar panels’ lifespan. Poorly installed systems may suffer from faulty wiring, improper mounting, or water leakage, which can reduce efficiency and longevity.
Weather Conditions
Damage from hailstorms, high winds, and snow can impact efficiency. High temperatures can cause thermal stress, accelerating wear and tear, while constant UV exposure over decades can affect performance.
Maintenance Upkeep
Keeping up with regular maintenance keeps your panels clean and free from debris, which can block sunlight and lower efficiency. Neglecting your system can accelerate wear and result in more significant performance drops.
Degradation Rate
Most modern panels degrade at around 0.5% per year, meaning they’ll still be about 88% efficient after 25 years. Some high-quality brands boast degradation rates as low as 0.3% annually for 92% efficiency.
How to Maximise Solar Panel Lifespan
While some degradation is inevitable, there are constructive steps you can take to ensure your solar panels last as long as possible. Here are a few tips for how to maximise your solar panel lifespan:
Invest in High-Quality Panels
Choosing higher-end solar panels with lower degradation rates might cost more upfront but provide more energy efficiency over time. They offer peace of mind by maintaining a higher energy output in the long run.
Get a Professional Installation
MPC Energy has skilled installers who use high-quality mounting hardware to prevent damage during extreme weather. We install them at the correct angle and orientation for optimal sunlight exposure.
Add Protective Measures
Consider using protective equipment like weatherproof coatings or anti-reflective glass to enhance your solar panels’ durability. These measures are instrumental in regions prone to severe weather.
Schedule Periodic Inspections
Schedule regular professional inspections early to detect any issues with your system. If left unchecked, loose wiring, cracked panels, or faulty inverters can lead to long-term damage, requiring a replacement.
Should You Replace Your Solar Panels after 25 Years?
You may wonder if you should replace your solar panels after 25 years. This decision largely depends on their current performance and your energy needs. If your panels still produce sufficient energy, scheduling a replacement may not be necessary. However, upgrading to newer, more efficient models could help you generate more power and save more in the long run. Our expert team at MPC Energy Ltd is ready to advise you if you’re ready to make home energy-efficiency improvements. In addition, we can help you apply for funding through ECO4 and LA Flex if you meet eligibility requirements.
Experience the Lasting Benefits of Solar Panels
Now that you know about the life expectancy of solar panels in Scotland, you’re ready to schedule an installation. MPC Energy Ltd has a fully accredited and award-winning team ready to help you get a reliable, long-term investment in sustainable energy. After we install your solar panels, you can relax and enjoy their numerous benefits for years. For more insights, please explore the rest of our guide to buying solar panels and make an informed decision about your energy needs. Contact us today with any questions or to arrange a custom quotation for your solar panel installation.
