Technology for the Real World

Factory-rated power doesn’t always equate to performance in the field. First Solar’s Series 4TM modules generate more energy for your solar plant with a module proven to deliver up to 7.5% more usable energy per nameplate watt than competing technologies.

The Most Tested and Reliable Module on the Market

With a product warrantied for 25 years, PV solar modules are reliable. First Solar is one of only five modules in the world to pass Atlas 25+, the Thresher and TUV Long-Term Sequential Tests.

Energy Yield Advantage | First Solar vs. c-Si

End-to-End Manufacturing

With our Series 4 modules, we have made numerous advancements to increase long-term quality and reliability, as well as efficiency. Our unique manufacturing process ensures unparalleled quality control for every component of the module.