First Solar, America's Solar Technology Leader

First Solar's Series 6 and Series 7 TR1 modules represent the culmination of 25 years of American solar innovation, featuring advanced CdTe thin-film technology that delivers superior performance in real-world conditions. The FS-6450 450W module provides reliable power output with 18.2% efficiency and exceptional temperature coefficient performance, while the Series 7 TR1 525W module offers industry-leading 0.3% warranted degradation rates with 30-year linear performance warranties. Both product lines are manufactured at First Solar's state-of-the-art facilities in Ohio, with expansion plans adding over 14 gigawatts of annual capacity across Alabama and Louisiana by 2026, making the company America's largest solar manufacturer and supporting over 15,000 direct and indirect jobs nationwide.

First Solar has committed itself to producing high-quality, responsibly manufactured American solar products for global deployment. The company's unique manufacturing process transforms a sheet of glass into a fully functional PV module in approximately four hours, utilizing automated production techniques that have more in common with flat screen television manufacturing than conventional solar panel assembly.

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Low Wholesale Prices on First Solar Series 6 & 7 TR1 First Solar Modules

First Solar Series 6 450W Solar Panel

First Solar Series 7 TR1 525W Solar Panel

First Solar – The Leader in Thin Film PV

First Solar has developed uniquely American thin-film photovoltaic technology, manufacturing advanced CdTe (Cadmium Telluride) modules while advancing research into next-generation thin-film innovations and glass-on-glass construction techniques.

CdTe Thin-Film Technology

First Solar currently manufactures 18.8% efficient thin-film CdTe modules in large-format configurations, with high-efficiency Series 7 TR1 modules featuring 19.7% cell efficiency in mass production at Ohio facilities.

Series 6 Technology

The proven Series 6 platform achieves 18.2% module efficiency through advanced CdTe semiconductor layers, featuring superior temperature coefficients (-0.32%/°C) and exceptional performance in high-temperature and low-light conditions.

Series 7 TR1 Technology

The next-generation Series 7 TR1 technology achieves 18.8% module efficiency and 19.7% cell efficiency through an optimized stack of anti-reflective coated front glass, advanced CdTe semiconductor layers, back glass construction, and innovative back rail integration system.