U.S.-Made Solar

Domestic solar cell manufacturing for a cleaner, more secure energy supply chain. Built in America. Built to last.

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FEOC Compliant

Building Trust with 100% FEOC-Compliant U.S.-Made Solar Cells

<p>Our solar cells are manufactured exclusively in the United States, meeting all FEOC compliance requirements.</p>

  • ✓No foreign entity involvement in manufacturing
  • ✓Fully audited U.S. supply chain
  • ✓IRA domestic content bonus eligible
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Building Trust with 100% FEOC-Compliant U.S.-Made Solar Cells
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100% FEOC-Free Verified U.S. Origin
P-type PERC Monocrystalline
Solar Innovation at Its Core

P-type PERC Monocrystalline

Industry-proven technology with excellent cost performance ratio -a smart choice for residential and commercial installations.

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Why S1 Energy

Empowering America's Solar Future

Expert-Driven Solar Innovation

Our team of engineers brings decades of photovoltaic expertise to every cell we produce.

Reliable, High-Efficiency Solutions

Consistent quality and performance backed by rigorous testing and certification.

Powering America's Clean Energy Future

Contributing to energy independence with every solar cell manufactured on U.S. soil.

Who We Serve

Choose the Power of S1 Energy for Your Solar Projects

We partner with industry leaders across the clean energy value chain.

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Panel Manufacturers

Supply domestic solar cells that meet FEOC requirements for your module production.

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Developers & Asset Owners

Qualify for IRA domestic content bonuses with our FEOC-compliant solar cells.

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Tax Equity Investors

Maximize tax credit value with our certified domestic content solar cells.

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