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Pushing the boundaries of solar technology

Rooted in sustainability. Powered by innovation. We’re a solar panel company advancing the next frontier of American PV manufacturing.

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Redefining the photovoltaic industry for tomorrow's energy freedom.

3SUN USA is elevating standards of excellence in photovoltaic science for solar energy applications; we are at the forefront of delivering a sustainable future for all.

Our timeline

The past, present and future of 3SUN USA

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Staying sustainable, supporting local

We know what it means to be a great neighbor, community member and steward of the environment — and we take that responsibility to heart. 3SUN has strict environmental and social standards when selecting materials and planning operations. As we build out our supply chain for the facility, we intend to manufacture a product with predominantly US partners — and made with 100% renewable energy to reduce carbon impact.

As an affiliate of Enel North America, 3SUN USA pulls from over 20 years of experience in creating shared value alongside local communities in the US. And we intend to continue that legacy.

Our planned factory in Inola, Oklahoma, about 25 miles outside Tulsa, is expected to create 1,800 construction jobs and 1,000 permanent jobs, while supporting the state through tax revenue. For hiring, we plan to work with the local community to build out workforce development programs and partner with local trade and technical colleges.

Our values



We leverage decades of Enel experience as a solar developer, operator and manufacturer to ensure maximum product reliability.

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Bifacial heterojunction PV cells capture more sunlight more efficiently, accelerating the US toward a clean energy future.



We believe that the needs of people and the environment should be top priorities in preserving our planet.


Continuous development of cutting-edge technology is the only path forward in the energy transition.

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