SEG Solar, a U.S. solar panel manufacturer, has unveiled plans to construct its third module manufacturing facility in the United States, reinforcing its domestic production footprint and vertical integration strategy. 

The new plant, spanning 1.15 million square feet, will be located in Greater Houston, Texas — the company’s headquarters hub. With an annual production capacity of 4.6GW, the facility will lift SEG Solar’s total operational manufacturing capacity to 10.6GW upon completion.

Construction is targeted to finish by March 2027, with commercial production of heterojunction (HJT) modules to start in May 2027.

The company is set to open its second U.S. module factory in Houston by the end of this week. Separately, SEG Solar has begun building a 3GW ingot and wafer manufacturing plant in Indonesia, part of its push to build a more robust vertically integrated solar supply chain.

A critical regulatory milestone for the company: SEG Solar has been designated as a non-PFE (Prohibited Foreign Entity). This status allows the firm to access key U.S. clean energy tax credits, including the 45X Advanced Manufacturing Production Credit and 48E Investment Tax Credit, from which PFEs are excluded. It also shields SEG Solar from ongoing FEOC (Foreign Entity of Concern) investigations, despite its upstream manufacturing project in Indonesia.