How Long Do Solar Panels Last? How to Extend Their Life

Solar panels cut your energy bill and your carbon footprint, but how long do they last? Here's what to expect and how to make yours last longer.

What causes degradation?

Panels slowly lose some efficiency over time as their materials weather. Physical damage can also shorten their life. Most panels are designed to last 25 years or more, but output declines gradually, often about 0.5–0.8% per year. After 20 years, a panel typically still produces around 80–90% of its original output.

How to maximize panel life

1. Keep them clean. Dust, dirt, pollen and bird droppings block sunlight and reduce output. Regular cleaning keeps panels producing at their best. Ask us about solar panel cleaning in Columbia, MO and Central Missouri.

2. Check for damage. In the Midwest, storms, hail and high winds are a fact of life. Inspect your panels for cracks, warping or loose wiring, and get damage repaired quickly before it gets worse.

3. Know your performance warranty. Most manufacturers guarantee a set level of output for 10–25 years. If panels fall short, you may be entitled to a repair or replacement. We'll help you understand your warranty options.

With proper care, solar panels provide clean power for decades.

Start your switch to solar

Solar Sam is a locally owned solar company based in Columbia, MO. We work with you from start to finish to find the best solar solution for your home, farm or business.

Talk to Solar Sam

Solar Sam is based in Columbia, MO and serves Central Missouri and surrounding areas. Call (573) 819-9623 or email info@solarsam.com for a free, no-obligation quote.