Houston is attracting new investment across the solar manufacturing supply chain, with companies developing facilities that produce solar cells, modules and utility-scale inverters. Together, the projects represent over $1.5 billion in capital investment and more than 1,000 potential manufacturing jobs across the region.
The activity reflects Houston’s broader strengths as a manufacturing and energy center, including its workforce, speed to market, available sites, transportation and logistics infrastructure, and its access to global markets. Manufacturing accounted for approximately 30 percent of the region’s 683 project announcements in 2025, according to the Greater Houston Partnership’s New Business Announcements.
RELATED: Houston Attracts Major Energy Investment with HQ Moves and Expansions
SEG Solar Expands
Houston-based SEG Solar is expanding its regional footprint with three manufacturing projects, building on its existing 2-gigawatt (GW) solar module facility that opened in 2024.
In August 2026, the company opened its second facility in Tomball. The $200 million, 500,000-square-foot plant adds 4 GW of annual solar module production capacity.
A third facility is also under construction at SEG’s Tomball campus. The 1.15-million-square-foot factory and warehouse will add another 4.6 GW of annual module production capacity, with commercial operations expected to begin in 2027.
Most recently, SEG announced plans for a $950 million solar cell manufacturing facility that will be adjacent to the two Tomball facilities. The project is expected to create more than 700 local jobs and add 4 GW of annual solar cell production capacity in two phases targeted for 2028 and 2029.
TOYO Plans New Solar Cell Facility
Japan-based TOYO is also growing its Houston-area presence. The company recently announced a new 1.5-GW solar cell facility that will be co-located with its existing module site in Humble.
The $357 million project is expected to create 400 direct manufacturing jobs with completion and initial pilot production targeted within 20 months. By pairing cell production with its module operations, TOYO says the co-located sites will create a more integrated domestic supply chain.
RELATED: Houston Leads U.S. Manufacturing Reshoring With Taiwanese Investments Surge
Other Recent Project Wins
Waaree Solar Americas announced a $200 million expansion of its Brookshire solar module factory in 2025, increasing the facility’s production capacity to 3.2 GW.
TMEIC Corporation Americas relocated its North American headquarters to Houston’s Energy Corridor in 2025. The Japan-based company also broke ground on a 267,000-square-foot facility in Brookshire last year, a $50 million investment that will produce uninterruptible power supplies for data centers. The project follows TMEIC’s 2024 opening of its 144,000-square-foot facility, also in Brookshire, that manufactures utility-scale solar inverters.
READ MORE: International Co. Moves HQ to Houston, Announces Solar Manufacturing Plant Near Katy
Learn more about Houston’s energy ecosystem.