SEG Solar, a leading U.S. photovoltaic module manufacturer, announced on December 15, 2025, plans to build a 3GW ingot and wafer manufacturing facility in Batang Regency, Indonesia. The project represents phase I of a total 5GW ingot and wafer production expansion plan and marks a key step in SEG's strategy to establish a fully integrated, non-FEOC supply chain supporting the U.S. solar market.

Investment Details and Timeline

The new facility in Indonesia is expected to involve an investment of approximately USD 80 million, fully funded by SEG. The project will cover approximately 50,000 square meters of site area and is scheduled to commence production in Q3 2026. This investment further advances the development of the SEG Indonesia PV Industrial Park, reinforces SEG's upstream manufacturing capabilities, and enhances the resilience of its global capacity planning.

Expanding Vertical Integration

SEG currently operates a module facility in the United States and a solar cell manufacturing facility in Indonesia, forming the foundation of its vertically integrated production platform. With the addition of the new 3GW ingot and wafer facility, SEG will establish an end-to-end manufacturing chain, from ingots and wafers to solar cells and finished modules.

Jun Zhuge, Founder and Chief Executive Officer of PT SEG Solar Manufaktur, stated that developing upstream ingot and wafer capacity is essential to completing SEG's integrated manufacturing system. With complementary production capabilities in the United States and Indonesia, SEG is positioned to deliver a fully traceable and non-FEOC supply chain that meets current and upcoming requirements for the U.S. solar industry.

Supply Chain Strategy and Market Impact

The construction of SEG's ingot and wafer facility represents a significant milestone that strengthens the company's commitment to delivering high-quality, reliable products. The project enhances transparency and traceability across the supply chain, meeting strict origin and compliance requirements and providing the U.S. market with a stable, trusted source of photovoltaic solutions.

The new facility is designed to support SEG's strategy to establish a fully integrated manufacturing system with production capabilities spanning the United States and Indonesia. This approach allows the company to maintain control over the entire production process while ensuring compliance with regulatory requirements for the U.S. solar market.

Company Background and Performance

Founded in 2021, SEG is a leading vertically integrated PV manufacturer headquartered in Houston, Texas, U.S., and dedicated to delivering reliable, cost-effective solar modules to the utility, commercial, and residential markets. By the end of 2024, SEG had shipped over 6 GW of solar modules worldwide and achieved a module production capacity of 6 GW.

The company's manufacturing footprint includes facilities in both the United States and Indonesia, positioning it to serve diverse market requirements while maintaining integrated production capabilities across the solar panel manufacturing value chain.

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