Optimized Design. Lower LCOE. Superior Return.

First Solar Series 6 and Series 6 Plus photovoltaic (PV) modules set the industry benchmark for reliable energy production, optimized design and environmental performance.

Series 6

Series 6

430 - 460 watts / up to 18.6% efficiency

  • Superior temperature coefficient, spectral response and shading behavior means more energy per watt vs. conventional c-Si modules
  • Innovative under-mount frame with SpeedSlots enable the industry’s fastest installation times and lowest mounting hardware costs
  • Dual junction box design reduces wire management complexity and cost
  • Best-in-class durability and reliability
  • No power loss from LiD or LeTID
  • Immune to and warranted against power loss from cell cracking
  • Industry’s best environmental profile with the lowest carbon and water footprint, and fastest energy payback

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Series 6 Plus

Series 6 Plus

440 - 470 watts / up to 18.7% efficiency

  • Includes all of the advantages of Series 6 
  • Larger form factor provides more watts per module, with minimal impact to structure design 
  • Enhanced BOS savings through fewer connections and less mounting hardware per watt
  • Series 6 Plus will be available in two product variants that are easily matched to structure zones: 
    • Interior array modules - a lighter load-compliant module that will occupy the interior rows of an array. The reduced weight enables faster install velocity
    • Exterior array modules - a higher load module that ensures an appropriately robust perimeter for an array
  • Overall lower LCOE for a competitive return on investment 

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Innovative Module Design

Advanced Thin Film Solar Technology


  • Advanced Design: Series 6 and Series 6 Plus offer an advanced design that is optimized for every stage of your application, significantly reducing balance of system, shipping, and operating costs.
  • Extensive Compatibility: Module design provides seamless mounting with common fixed-tilt and tracking applications
  • Stable, Robust Packaging: Unique frame design allows for nested stacking maximizing shipping and handling efficiencies
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Reliable Performance

Based on First Solar’s proven CdTe technology, Series 6 and Series 6 Plus are independently tested and certified for reliable performance that exceeds IEC standards, even the most extreme environments.

 Learn about our component and structure partners

End-to-End Manufacturing

Series 6 and Series 6 Plus modules are manufactured under one roof with a 100% traceable QA/QC program that results in a globally consistent and high-quality product.