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SunPower's New Warranty
SunPower recently announced the industry's first 25-year combined power and product warranty. Because of our superior technology, the new warranty guarantees more energy production for the 25-year life of the system. Any customer purchasing SunPower solar panels for their home will be covered. Moving from a step to a linear warranty, SunPower guarantees at least 95% power for the first 5 years, followed by a maximum degradation of 0.4% each year thereafter for an unprecedented 87% power level at the end of the 25 years.
SunPower's new warranty, written in clear, simple terms, covers the solar panels for 25 years, 15-20 years longer than conventional warranties. Go here to download the new warranty or sell-sheets.