T1 Energy’s Factory Passes the Grade, but Three Storms Are Gathering Simultaneously

T1 Energy stock slides 35% from high as it faces a $225M funding deadline for its Texas factory, a U.S. patent investigation from First Solar, and federal subpoenas over supply chain allegations.

The solar manufacturer notched a quality win in April when Intertek CEA awarded its 5-gigawatt G1_Dallas facility an “A” in a bankability assessment, validating that its modules match Tier?1 rivals on efficiency, temperature coefficients and durability. Yet that positive signal has been drowned out by a convergence of separate crises that have pushed the stock to 7.20?€ — a 13?% slide in just seven trading days and a 35?% retreat from this year’s high. Investors are now weighing a funding deadline, a patent investigation and a government probe, all at once.

The most immediate pressure is the financing gap for the second U.S. factory, G2_Austin. T1 Energy needs about 225?million?$ for Phase?1 of the 2.1?GW cell plant. After the convertible note issued in April, net proceeds stand at roughly 174.7?million?$, leaving a significant shortfall. The company had pledged to close the financing by the end of the second quarter — a deadline that has now expired. Should that funding come through, first cell production remains on track for the fourth quarter of 2026; failure would force a reassessment of output and revenue targets. At the annual meeting on June?17, shareholders gave management more leeway by approving an increase in authorized capital from 500?million to one billion shares, opening the door to further equity-linked moves if debt alone cannot bridge the gap.

On the legal front, a patent battle with First Solar has produced a binary risk. In March?2026, the U.S. International Trade Commission opened an investigation into whether T1 Energy’s TOPCon technology infringes First Solar’s patents; a parallel Delaware case is paused while the ITC deliberates. A negative ruling could effectively bar TOPCon cells from the U.S. market, hitting T1 Energy’s core product. Bernstein SocGen analyst Sunaina Ocalan, who initiated coverage with a Market?Perform rating and a 9?$ price target, built exactly that uncertainty into her scenario model, weighting the patent outcome alongside the Austin factory ramp and new supply contracts.

Compounding the legal risk is a short?seller attack with regulatory teeth. Fuzzy Panda Research accused T1 Energy of misleading investors over its supply chain, alleging that invoices from a whistleblower show the company purchased roughly 65?million?$ in solar cells from sanctioned supplier Trina Solar during the first quarter of 2026. The stock lost 8?9?% on the report’s release. The allegations carry particularly heavy weight: if T1 Energy ran afoul of U.S. rules on Foreign Entities of Concern, billions in manufacturing tax credits could be jeopardized. Fuzzy Panda also questioned how the company booked 41.4?million?$ in tax credits in the first quarter that it had not yet received. Both the Department of Justice and the Securities and Exchange Commission have since issued subpoenas.

Amid the noise, the operating numbers from the first quarter underscore the underlying potential. Revenue surged 232?% year?over?year to 177.6?million?$, beating analyst expectations by 61?%. The company turned its first net profit — albeit a slim 2.91?million?$. Separately, management is advancing the acquisition of KORE Power for roughly 32?million?$ to strengthen its energy?storage and AI?data?center business.

The stock’s trajectory remains unusually event?dependent. At 7.20?€, it has more than doubled from the April low of 3.24?€ yet sits well below the year’s high of 11.00?€. The coming weeks bring two concrete milestones: an announcement on the Austin financing and further developments from the ITC. The second?quarter earnings report is due in August. Each of those data points will determine whether the factory’s “A” grade can finally start to outweigh the three storms still overhead.