How Long Do Solar Panels Last?
Modern residential solar panels are built to last for decades. Most come with a 25-year warranty, but they can continue generating electricity long after that.
That means there’s plenty of time to not only recoup your investment but also enjoy years of free, renewable energy before you’ll have to replace your solar panels.
Let’s break down what you need to know about solar panel lifespan, degradation, warranties, and how to maximize your system’s longevity.
Solar Panel Lifespan: How Long Will They Last?
Most home solar panels are designed to last for around 25 years. But they often continue producing electricity well past the end of their warranty period. This is because solar panels don’t just stop working the minute they hit the 25-year mark—their efficiency degrades over time, but it happens slowly.
This long lifespan makes solar a financially sound investment. Depending on your electricity costs, you could break even on your solar installation within 7-12 years—leaving you with at least another 15-20 years of pure savings before you need to think about panel replacement.
Solar Panel Degradation: What Happens Over Time?
Solar panels degrade over time, which means they generate slightly less electricity each year. But solar panel degradation happens very slowly. On average, solar panels lose about 0.5% to 0.8% of their efficiency annually. That means:
After 10 years, they’ll still produce around 90% of their original output.
After 25 years, they’ll still generate about 80-85% of their initial power.
Even after decades of use, your panels will continue supplying power—just at a slightly lower rate than when they were brand new.
Solar Panel Warranty: What Does It Cover?
Most residential solar panels come with two warranties. However, these will vary depending on the manufacturer.
Performance Warranty – Guarantees that your panels will still produce a certain percentage of their original output after a set number of years, typically 80-85% after 25 years.
Product Warranty – Covers defects and equipment failure. The solar panels and solar inverters we install are all backed by a 20-25 year warranty.
When you go solar with Taylor Energy, you’ll get an extra warranty. We back our installations with a 10-year workmanship guarantee for added peace of mind.
Solar Panel Maintenance: Do You Need to Worry?
One of the biggest benefits of solar panels (after their long lifespan) is their low maintenance requirements. They have no moving parts, which means there’s very little that can break or wear out. To keep your panels performing at their best, follow these simple maintenance steps:
Keep them clean – Dust, pollen, leaves, and bird droppings can block sunlight. Usually, rain is enough to rinse off your solar panels, but an occasional cleaning can help maintain their efficiency.
Inspect for damage – After a storm, check for cracks, loose wiring, or damage from debris so it can be repaired quickly.
Monitor energy output – Keep an eye on your electricity production. If your system starts producing less power than expected, call Taylor Energy. We’ll take a look, figure out what the problem is, and recommend the best solution to get your system back on track.
Tips to Make Your Solar Panels Last Longer
If you want to get the most out of your investment in solar panels, there are a few things you can do to maximize your solar output and help your system last as long as possible.
✔ Choose high-quality panels – Investing in well-made, durable panels from a reputable manufacturer will make a big difference in long-term performance.
✔ Install them correctly – Poor installation can lead to premature wear, inefficiencies, and even system failures. With our team of certified solar professionals, your panels are installed with precision to maximize their lifespan and efficiency.
✔ Monitor Solar Output – Regular monitoring helps detect potential issues before they impact your savings. Taylor Energy provides advanced system monitoring so you can track energy production in real-time and receive alerts for any performance drops.
✔ Work with a trusted solar partner – The best way to ensure your solar system lasts? Choose a company that’s in it for the long haul. With years of experience and a commitment to long-term customer support, Taylor Energy stands by every system we install, helping you maximize your solar investment for decades.
Thinking about installing solar panels for your home? Call (707) 873-7721 to schedule a free solar assessment!
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