SEG Solar Opens $200 Million Tomball Factory, Expanding Houston-Area Solar Manufacturing
A major new piece of the Houston region’s advanced manufacturing economy is taking shape in Tomball, where SEG Solar has opened a $200 million solar module factory that dramatically expands the Houston-based company’s U.S. production capacity — with another local facility already under construction.
The new plant at 20103 Clay Industrial Road in Tomball is SEG Solar’s second U.S. manufacturing facility and adds 4 gigawatts of annual solar module production capacity. Combined with the company’s existing 2-GW facility at 10625 Telge Road in Houston, SEG says its U.S. manufacturing capacity now totals 6 GW annually.
For residents across Tomball and northwest Harris County, the story extends beyond solar panels. Regional business and workforce leaders are pointing to the project as another source of skilled manufacturing employment, supplier activity and workforce training in an area that continues attracting major industrial investment.
More Than 500,000 Square Feet of New Manufacturing in Tomball
SEG officially inaugurated the Tomball facility on Aug. 7, with approximately 800 employees, government representatives, business leaders, customers and solar industry participants attending the opening, according to the company.
The more than 500,000-square-foot facility represents a $200 million investment and is the largest module manufacturing plant SEG has built in the United States. The company describes it as one of the nation’s largest facilities producing heterojunction, or HJT, solar modules.
Four production lines at the Tomball plant are designed to manufacture SEG’s SIERRA N series high-efficiency solar modules. The manufacturing process includes specialized techniques such as low-temperature soldering and precision sealant application intended to improve module durability and performance.
The company has said commercial operations are expected to begin during the third quarter of 2026 as production-line installation is completed.
“Seeing another SEG manufacturing facility stand on American soil is a proud moment for all of us,” SEG founder and Chief Operating Officer Jun Zhuge said. “The rapid growth of artificial intelligence and data centers is driving unprecedented demand for reliable electricity and accelerating the need for new energy infrastructure. Tomball 1 is an important step in expanding our manufacturing capacity to meet that demand, with commercial operations expected to begin in the third quarter of this year.”
Local Leaders See Jobs and Supply-Chain Opportunities
The Tomball expansion is also being viewed through the lens of the Houston region’s broader economy.
Bobby Lieb, CEO of the Northwest Houston Chamber of Commerce, said during the opening that SEG’s continued investment reflects confidence in the Texas business environment and local workforce. According to SEG’s account of his remarks, Lieb said the facility is expected to create skilled jobs, support additional supply-chain activity and contribute to the broader expansion of American manufacturing.
SEG has not announced a specific employment total for the Tomball plant in the information released with the opening.
Craig Rhodes, senior vice president of the Greater Houston Partnership, described the project as part of Houston’s changing energy economy. He said the organization plans to help connect SEG with area suppliers and research institutions as solar manufacturing becomes a larger piece of the region’s industrial base.
That distinction matters in Houston, where the energy sector has long been associated primarily with oil and natural gas. New investments in solar manufacturing, batteries, hydrogen and other technologies are increasingly adding additional layers to the region’s energy and advanced manufacturing economy rather than simply replacing its traditional industries.
Workforce Training Could Connect Local Residents With Manufacturing Careers
Workforce development was a recurring focus during the Tomball factory opening.
Juliet Stipeche, executive director of the Gulf Coast Workforce Board, announced plans for deeper collaboration with SEG involving workforce training and talent development. The initiative is intended to help local residents develop skills needed for advanced manufacturing positions while creating a pipeline of workers for the company’s expanding operations.
For the Tomball area, that could make the factory relevant even to residents who have little direct connection to the solar industry. Large manufacturing operations typically require a range of occupations spanning production, maintenance, engineering, quality assurance, logistics, supply-chain management and administration.
The company and workforce partners have not yet detailed the full scope or enrollment process for the planned training initiatives.
Why SEG Solar Is Expanding Around Houston
SEG Solar is headquartered in Houston and manufactures photovoltaic modules for utility-scale, commercial and residential solar projects. The company reported shipping more than 7.5 GW of solar modules worldwide by the end of 2025.
Its existing Houston manufacturing plant is located on Telge Road, roughly southeast of the new Tomball operation.
The expansion comes as solar manufacturers and their customers place increased attention on domestically produced equipment, supply-chain traceability and the ability to source components that comply with federal requirements.
SEG has also emphasized independent inspection and verification as part of its manufacturing strategy. At the Tomball opening, Paul Wormser, senior vice president of technology at testing and certification company Intertek, discussed the role third-party verification plays in establishing confidence in solar equipment quality and manufacturing practices.
SEG has summarized its Texas-focused manufacturing strategy with the phrase “Made in Texas. Powering America.”
Another SEG Solar Factory Is Already Under Construction
The Tomball opening is not the end of SEG’s Houston-area expansion.
A third U.S. solar module manufacturing facility is already under construction, with production currently planned to begin in May 2027. SEG has previously said that project will total approximately 1.15 million square feet of manufacturing and warehouse space.
Once the third facility is commissioned, the company projects its U.S. solar module production capacity will reach 10.6 GW annually.
SEG is also evaluating the development of solar cell manufacturing in the United States, which would move part of its domestic operation further upstream in the solar supply chain instead of limiting production primarily to assembling finished modules.
Internationally, the company is developing an integrated solar manufacturing operation in Indonesia. SEG says that by 2027 the industrial park is expected to include production spanning ingots through solar cells, with additional HJT cell manufacturing capabilities planned as part of its longer-term supply-chain strategy.
What the Tomball Factory Means for the Community
For Tomball and northwest Harris County, the immediate significance of the SEG Solar expansion is economic: a $200 million industrial investment, a large new advanced manufacturing operation and the prospect of additional skilled jobs, training programs and supplier relationships.
Its longer-term significance may depend on what follows.
With one Houston-area plant operating, the Tomball facility preparing for commercial production and another factory under construction, SEG is building a concentrated manufacturing presence in the region rather than opening a single stand-alone operation.
That gives the Tomball opening a broader place in the story of northwest Harris County’s growth — not simply as another commercial development, but as part of the Houston area’s effort to remain a major energy center while attracting more advanced manufacturing and next-generation energy businesses.
My Neighborhood News will continue following SEG Solar’s Tomball expansion, local workforce opportunities and the development of its next Houston-area manufacturing facility as those plans move forward.
Tiffany Krenek has been on the My Neighborhood News team since August 2021. She is passionate about curating and sharing content that enriches the lives of our readers in a personal, meaningful way. A loving mother and wife, Tiffany and her family live in the West Houston/Cypress region.