What is Linear Performance Warranty in Solar Panels [Explained]

Finally you got your solar panels installed and you were checking documentation of system and you get warranty certificate of panels which says Linear Performance Warranty 25 years. Now you are probably wondering what does that means right?

From Data Sheet of Jinko Solar

As it name suggest Linear Output Warranty is a Warranty on Performance for next 25 Years of solar powerplant installation. Now you must be thinking what is definition of Performance and what are terms for this warranty? Well for different companies terms and condition will be different. Now what is Performance well when we install Solar panels from day 1 it will start generating power and its efficiency will be 100% on Day 1 However since it is brought from factory environment to real life environment it’s efficiency will drop from 1.5 % to 2 % at end of 1 rst Year. Why does that happen? It happens because of daily exposure to Higher and Lower Temperature and Humid, Dry and Dusty Atmosphere everyday. First year is a settlement period for Solar panels.

Now from second year onwards Solar Panels efficiency will drop 0.55% every year and this percentage is under warranty by respective OEMs for up to 25 Years. You may monitor output of Solar system with help of Remote Monitoring Unit provided by your installer to know when you want to claim warranty. 

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Keyur Oza

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