SEG Solar opens 4 GW Texas facility, announces plan to become the nation’s largest crystalline silicon module maker

Solar company SEG Solar has opened a large new factory in Tomball, Texas, where workers assemble solar panels (crystalline silicon modules) for homes and businesses. The plant is expected to reach full output next year, adding 4 gigawatts of yearly capacity on top of the company's existing 2-gigawatt plant nearby in Houston. Combined, that's enough panels to eventually produce 30,000 modules a day at this site alone, once it employs about 500 workers.

SEG also announced plans to build a second factory across the street within 18 months, adding another 4.6 gigawatts of capacity. If completed, the company says it would become the largest U.S. maker of this type of solar panel, producing around 70,000 modules a day across its Texas sites. The company also said it wants to build a plant that makes solar cells (the components inside panels that convert sunlight to electricity) in the U.S. by 2028.

The timing is notable because the expansion was announced one day after the Trump administration unveiled new tariffs and a minimum price rule on imported solar cells and panels. Company leaders acknowledged they still need to figure out how to respond to those trade changes. For homeowners, none of this changes anything immediately, but more U.S.-made solar panels entering the market, combined with new tariffs on imports, could eventually affect panel pricing and availability for home solar installations.