Answer
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All solar modules come with a 30-year performance warranty, typically following a degradation curve as applicable to that particular technology used.
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When evaluating solar module manufacturers, it’s important to consider the warranty risk. However, this risk can be mitigated by insuring the products. Insurers assess various certifications before issuing coverage, so it may be reasonable to assume that companies with insured modules are producing modules of acceptable quality.
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Historically, when warranties have been invoked, module manufacturers have often replaced the panels, which can be beneficial to them due to the declining cost of solar modules over time.
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