How does LG guarantee the output of its solar panels?
LG provides rigorous quality testing to all solar modules to ensure the rated power output. Our modules have a positive nominal tolerance starting at 0% and going as high as +3%. For example, this guarantees that a new LG 260 Watt module will not deliver a rated output less than 260 Watts.
Below is a typical spread sheet breakdown of the 260W panels and their flash test output in a pallet of new panels. You can see on the sample, our buyers definitely get many more watts than 260W for the majority of our panels.