The National Renewable Energy Laboratory (NREL) conducted a study in 2012 showing that the average solar panel loses about 0.8% efficiency after a year of service. The key factor in making solar panels last: panel degradation rate This means that the biggest problems they will face will be from the outside. Because there are no movable parts, they have no need of internal mechanical service. They will still function for decades after this, and may even function at regular capacity if proper care and maintenance is provided and they are protected from the wind, flying/ falling debris and attrition of the elements. This doesn’t mean that they will cease to function after this time, this means that the amount of energy produced can no longer be expected to be above the manufacturer's design.
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Even though you can expect a few decades of service life from your solar panels and a considerable reduction in your energy bills, the wisest plan will include all details for service life and projected degradation.Īs mentioned, the industry standard for a solar panel in full function is between 25 and 30 years. It is important to know what you will be receiving in terms of service life before you make your purchase. Nevertheless, the solar panel will not simply cease to function at this point, rather its functionality will be compromised considerably lower than the manufacturer design.
The industry standard for an acceptable solar panel is 25 to 30 years.
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