A performance warranty guarantees a minimum energy output for a specific period, typically 25 years. – What It Covers: Gradual efficiency loss over time. – Industry Standard: Panels should retain at least 80-85% of their original efficiency after 25 years. [pdf]
[FAQS about Photovoltaic panel quality warranty period]
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. [pdf]
[FAQS about How long is the warranty period for rooftop photovoltaic panels ]
The warranty period for solar inverters starts when the product is placed into service at the installation site. If the product isn’t installed within a certain interval, the warranty period starts automatically. [pdf]
[FAQS about PV inverter warranty start time]
For that, the industry standard is 5-10 years, with selected manufactures offering up to 20 years. A power output warranty, which covers cases where the power output falls below the guaranteed levels. [pdf]
[FAQS about Photovoltaic and energy storage warranty period]
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