30 Year Warranty
Solar Panel Installation Warranty
A professional, licensed solar installation company will provide an installation or workmanship warranty in addition to the warranties provided by the equipment they install (panels, inverter(s), optimizers, monitoring, racking system, etc). As for the equipment, most solar panels come with a performance warranty lasting 30 years. The performance warranty guarantees that a panel’s output capacity will not drop by more than 0.7% per year or less than 20% over 30 years. This means that your system is warrantied to be at least 80% as productive 30 years after it is installed. This degradation rate can range from about 0.4% per year for high-end modules, to about 0.9% per year for others, but 0.7% per year is the industry standard.
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