Solar panels generally come with two warranties: The product warranty covers the equipment and typically guarantees at least 10-12 years without fail, and the power or performance warranty often guarantees at least 90% production at 10 years and 80% at 25 years. . Below is a simple guide to the three core warranty types and how to read the fine print so you know exactly what is covered. Usually guarantees a max annual degradation rate and a final output level after 25 years. Covers panel failures due to defects, not damage or misuse. All solar panels lose pep over time. . According to the 2025 Solar Asset Owner Trends Report by PV Tech Research, 36% of solar project owners faced issues not covered by their warranties—most commonly related to inverter failure, early panel degradation, or workmanship faults. In financed or power purchase agreement (PPA) -based. . When considering solar panel options, you'll likely come across the term “linear performance warranty.
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