How long do solar panels last?

If you take good care of your solar panels, then they could easily last over 40 years after being installed. However, it is essential to remember that their performance levels will have deteriorated slightly over that time period. The life expectancy of around half a century applies to both monocrystalline and polycrystalline solar panels.

What factors affect the life expectancy of solar panels?

Here are some factors that affect the life expectancy of solar panels: The quality of the solar panels themselves is a vital factor that influences their longevity. High-quality panels, manufactured with stringent quality control and premium materials, are less susceptible to degradation over time.

Are solar panels durable?

Solar panels are generally very durable. Most solar panels are designed and tested to withstand the elements like hail, high winds, and heavy snow loads. And thanks to their lack of moving parts, solar panel systems usually require little to no maintenance. Still, maintaining your solar panels can boost production.

How does climate affect the longevity of solar panels?

The surrounding environment and climate have a direct impact on the longevity of solar panels. Panels exposed to harsh weather conditions, such as extreme temperatures, hail, or high winds, are more susceptible to physical damage.

How efficient is a 10 year old solar panel?

Given the typical degradation rate of about 0.5–0.9% per year, a 10-year-old solar panel can be expected to retain 90–95% of its original efficiency. This means that if a solar panel started with an efficiency of 20%, it should still deliver around 18-19% efficiency after a decade. Should I Replace 15-Year-Old Solar Panels?

How much do solar panels degrade a year?

The degradation rate of solar panels is calculated as a percentage. Experts estimate that most solar panels degrade at a rate of around 0.2% – 0.5% per year. This means that the output of usable energy generated by your solar panels slowly decreases over time.