T1 Energy Inc. (TE) is betting big on domestic solar manufacturing, and Monday brought validation in the form of a major contract win. The company disclosed a three-year agreement with Treaty Oak Clean Energy that has T1 Energy supplying at least 900 MW of solar modules—all made with American-produced solar cells from its forthcoming G2_Austin facility.
The timing couldn't be better. As trade tensions and tariff uncertainties swirl around the solar industry, Treaty Oak is getting exactly what it needs: high-performance, silicon-based solar modules designed to comply with new federal regulations on foreign content. For T1, it's another step toward building what it calls a traceable, reliable solar supply chain right here in the United States.
Building Out Texas Capacity
T1's 5 GW Texas facility leverages high-efficiency TOPCon technology, which allows the company to offer structured solutions that improve project planning, financing, and returns for its customers. It's not just about selling panels—it's about making the entire process more predictable and bankable.
Construction has already kicked off on the initial 2.1 GW phase of the G2_Austin solar cell facility. The full project will unfold across two phases totaling 5.3 GW, working alongside the company's existing 5 GW G1_Dallas module plant. Together, these facilities are positioned to meet surging demand for FEOC-compliant, high-domestic-content solar materials from customers like Treaty Oak.
The Domestic Content Advantage
Here's where things get interesting: T1 is steadily ramping up the domestic content percentage of its modules. Once G2_Austin's first phase fires up production by the end of 2026, the company expects modules to exceed 60% domestic content, with room for further increases down the line.
Why does this matter? Because in today's environment of trade restrictions and tariff volatility, domestic modules made with domestic cells are increasingly valuable. They reduce supply chain risk, simplify compliance, and make financing easier—all things that developers and utilities care deeply about.
Last month, T1 disclosed that the first phase construction of G2_Austin carries an estimated price tag of $400 million to $425 million. That's a serious investment, but one that positions the company at the center of America's solar manufacturing renaissance.
What the Partners Are Saying
Chris Elrod, CEO of Treaty Oak, explained the strategic logic: "T1 is the right partner for us as they share in our commitment and focus to secure domestic cell supply and predictable delivery, reducing risk, improving financing, and delivering better value for our customers."
Dan Barcelo, T1's Chairman and CEO, emphasized the broader industry shift: "The U.S. solar market is moving toward domestically produced solar and momentum is growing for modules manufactured in America."
He added, "G2_Austin is a centerpiece of our strategy to build an integrated U.S. polysilicon solar supply chain, and we're pleased Treaty Oak shares our belief in the value of American modules."
Market Response
Investors liked what they heard. T1 Energy shares climbed 10.73% to $7.12 during premarket trading on Monday, hitting a fresh 52-week high. The stock has been on a tear as the company's domestic manufacturing strategy gains tangible momentum with contracts like this one.
