SEG Solar, a Houston-based solar module manufacturer, has announced plans to construct a new 4-gigawatt manufacturing facility in Houston, Texas, an investment the company says will exceed USD 200 million and create up to 800 new jobs. Commercial operations at the new plant are expected to begin in the third quarter of 2026.

The announcement positions SEG Solar to become one of the largest 100% U.S.-owned solar module manufacturers, according to the company. Combined with its existing 2 GW facility, the expansion will bring SEG's total annual U.S. module production capacity to approximately 6 GW.

Scale and Physical Footprint

The new facility will occupy nearly 500,000 square feet and is designed to accommodate next-generation manufacturing technologies. Timothy Johnson, Vice President of Operations at SEG Solar, described the plant as built with flexibility in mind, noting it is designed to integrate emerging technologies, including heterojunction technology, known as HJT, as the broader solar industry continues to evolve.

"This new facility marks an important milestone for SEG," Johnson said in the company's announcement. "It will further strengthen our U.S. manufacturing capabilities while supporting ongoing technology innovation."

The company said domestically produced modules from the new facility will offer partners and customers improvements in product quality, traceability, and delivery speed.

Part of a Broader Vertical Integration Strategy

The Houston expansion is one component of a wider localization and supply chain strategy SEG Solar has been pursuing. The company separately disclosed plans to develop a 5 GW ingot and wafer manufacturing facility in Indonesia, which was expected to begin construction in the second quarter of 2026. That project, once completed, would allow SEG to deliver modules through a fully integrated supply chain spanning ingots, wafers, and cells.

SEG Solar said that kind of end-to-end integration has become increasingly important given the current policy and trade environment facing the solar industry.

The company added that it has been validated as a non-Prohibited Foreign Entity, or non-PFE, for Foreign Entity of Concern compliance purposes by multiple independent third parties, and that it currently provides modules with non-PFE solar cells.

Company Background and Current Production Figures

SEG Solar was founded in 2021 and is headquartered in Houston, Texas. The company describes itself as a vertically integrated photovoltaic manufacturer serving utility, commercial, and residential markets. By the end of 2025, SEG reported it had shipped more than 7.5 GW of solar modules worldwide and had achieved a module production capacity of 6.5 GW globally.

The new 4 GW U.S. facility is intended to further anchor the company's domestic manufacturing presence at a time when supply chain transparency and American-made credentials have taken on heightened significance across the solar sector.

Jobs and Economic Impact

SEG Solar said the new Houston facility is expected to create up to 800 new jobs. The company did not provide a breakdown of job types or a timeline for when those positions would be filled beyond the facility's anticipated commercial operations start date of the third quarter of 2026.

The investment figure of over USD 200 million represents the capital commitment for the new facility, specifically, separate from any costs associated with the Indonesia ingot and wafer project. The company did not disclose financing arrangements or the source of capital for either project in its announcement.

U.S. Manufacturing Footprint Continues to Grow

The announcement builds on SEG Solar's existing U.S. operations and reflects the company's stated long-term localization strategy. The company's first U.S. facility, with a 2 GW annual capacity, provided the operational foundation from which SEG is now scaling.

With the addition of the new 4 GW plant, the company's domestic capacity alone would match or exceed the combined global production footprints of numerous solar manufacturers currently serving the American market.

SEG Solar has also been active in demonstrating its U.S. manufacturing credentials to industry stakeholders. The company showcased its local manufacturing capabilities at the RE+ Texas 2026 trade event in March of this year, and separately completed an installation of American-made panels at an Oregon solar farm through its work with Avangrid, according to other items on the company's news feed.

The company also recently established a new entity called SEG Energy, which is intended to expand SEG Solar's presence into the global photovoltaic storage market, though the Houston factory announcement is separate from that initiative.

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