Texas-based solar module manufacturer SEG Solar has unveiled plans for a third manufacturing facility in the Houston metropolitan area. The new 4.6 GW facility is set to begin construction in March 2027, officials say, and will push the company’s manufacturing capacity to 10.6 GW.
The announcement comes off the heels of SEG’s recent announcement of a second Houston factory earlier this year. That facility is expected to open for business Aug. 7.
This third factory further strengthens SEG’s position within the wider solar market, and according to the company, makes it the largest domestic PV module manufacturer in the U.S. Additionally, the two new Houston-area factories will greatly advance the company’s planned long-term localization strategy.
Perhaps most promisingly for the company, the new facility will push SEG further into the realm of manufacturing with heterojunction technology (HJT). Merging traditional crystalline silicon with thin-film amorphous silicon to create more efficient, more durable solar panels that perform exceptionally in hot weather.
“The new facility is being planned to support SEG’s transition toward next-generation HJT technology, enabling high-efficiency module production aligned with the evolving needs of the U.S. market,” SEG Solar representatives say. “The facility is also designed to support FEOC-compliant module production through strengthened supply chain traceability, material control, and compliance management.”
The new site spans 1.15 million square feet, and includes both the manufacturing facility itself as well as a product warehouse, SEG officials add. Since its founding just five years ago in 2021, SEG has shipped over 7.5 GW worth of solar modules worldwide, and has a production capacity of 6.5 GW as of the end of 2025.
The new facility is expressly designed to be FEOC-compliant under new U.S. standards and regulations, promoting supply chain traceability as well as material control. The two new factories aim to help SEG Solar remain “aligned with the evolving needs of the U.S. market,” officials say.
As part of that alignment with growing demand, the company has also founded a ingot and wafer facility in Indonesia. That facility will fully integrate with the company’s U.S.-based supply chain, and therefore will not be subject to increased tariffs or other traditional international trade barriers.
“This upstream integration is intended to secure critical components and enhance the resilience of SEG’s global supply chain,” the company says of the Indonesia facility. “SEG is also evaluating potential U.S. sites for a dedicated HJT cell manufacturing facility, further advancing its strategy to localize key manufacturing processes and strengthen control over next-generation solar technologies.”
Tags: HJT modules, manufacturing, products, PV Modules, SEG Solar, Texas
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