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How long do solar panels last?
Generally speaking, the lifespan of a solar panel is about 25-30 years. However, that doesn't mean they stop generating electricity after 25 years - it just means that energy production has dropped by what manufacturers consider to be a significant amount.

Given that the solar panels have not been physically damaged by wind, debris or any other external factors, they will continue to work for decades. This is mainly because solar panels don't have any moving parts - they rarely break from the inside and are usually only damaged by external forces, such as poor shelf settings or inclement weather.

The key factor in making solar panels last: panel degradation rate
A 2012 study by the National Renewable Energy Laboratory (NREL) found that, on average, the output of solar panels fell by 0.8% per year. This rate of decline is called the solar panel degradation rate. While this degradation rate metric will vary depending on the brand of panel you buy, high-end manufacturers like SunPower offer degradation rates as low as 0.3%. As solar panel technology improves year by year, so does the degradation rate of solar panels, with degradation rates below 1% being common across the industry. In the years since the study was conducted in 2012, more efficient techniques have been developed, with many newer panels showing only a 0.5% annual drop in energy output (or better!
Can you make your solar panels last longer?
Generally speaking, solar panels are very durable. Most manufacturers test their panels to confirm that they can withstand the load of high winds and snow, and many solar panels are specifically tested to ensure they can withstand falling hail. Additionally, solar systems typically have no moving parts, and they require little maintenance.

The best way to keep your solar panels working long term is to work with a reputable installer with solid customer service. It's also important to buy solar panels with strong warranties -- many panel manufacturers offer their panels a 10- to 12-year equipment warranty that covers defects and environmental damage, as well as a production warranty that usually lasts around 25 years, guaranteed Your panels will produce more than a certain amount of energy for your home.

Williams Mark

Williams Mark

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