SEG Solar is expanding its US manufacturing footprint again, this time with a new 4-gigawatt solar module factory planned for Houston, Texas.
The company said today that the new facility will add nearly 500,000 square feet of manufacturing space and increase SEG’s total US solar module production capacity to around 6 GW annually. Commercial operations are expected to begin in Q3 2026.
SEG says the Houston project represents more than $200 million in investment and will create up to 800 jobs.
The expansion comes as US solar manufacturers continue to build more production capacity amid growing demand for domestically made clean energy equipment and tighter scrutiny around solar supply chains.
SEG’s first US factory was a 2 GW solar module plant. With the new Houston facility, the company says it expects to become one of the largest fully US-owned solar module manufacturers.
The company says the factory is being designed to support future solar technologies, including heterojunction (HJT) solar cells.
“It will further strengthen our US manufacturing capabilities while supporting ongoing technology innovation,” said Timothy Johnson, SEG Solar’s VP of operations.
SEG’s Houston announcement follows its previously announced plan to build a 5 GW ingot and wafer manufacturing facility in Indonesia. Construction on that facility is expected to start in Q2 2026.
If completed, the Indonesia project would give SEG a more vertically integrated solar supply chain spanning ingots, wafers, cells, and modules.
That’s becoming increasingly important as the US solar industry faces ongoing trade disputes, tariff pressure, and stricter rules around foreign entities of concern (FEOC).
SEG said multiple independent third parties have validated the company as a non-PFE for FEOC compliance purposes and that it currently supplies modules using non-PFE solar cells.
Read more: This solar farm lets cattle roam under moving panels
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