Yingli Solar

Yingli Solar's product warranty covers defects in materials and workmanship under normal application, installation, use, and service conditions for a period of 10 years. Yingli Solar will repair or replace the defective PV module or provide a refund equal to the market price of a comparable PV module at the time of the customer's claim.

Yingli Solar's performance warranty covers the output efficiency of your solar system. After a period of 10 years output should be no less than 91.2%. After a period of 25 years output should be no less than 80.7%. If output is reduced to less than 91.2% in 10 years or less than 80.7 in 25 years Yingli Solar will replace or repair the defective modules or provide additional products to make up for such decrease of power.