Taiwan Semiconductor Manufacturing Company’s groundbreaking ceremony for its third fabrication facility in Arizona represents yet another significant milestone in the company’s investment of $165 billion in semiconductor manufacturing in the United States. The TSMC Arizona project officially commenced construction in late April 2025, establishing what stands as the most significant foreign direct investment in American history.
Timeline Acceleration and Strategic Planning
The company has demonstrated remarkable agility by accelerating its construction timeline for the third fab. Initially planned for construction in 2026, TSMC Arizona moved the groundbreaking forward to 2025, reflecting its commitment to expanding U.S. production capacity amid potentially growing demand for advanced semiconductors. This expedited schedule follows TSMC’s board meeting, held on U.S. soil for the first time in the company’s 37-year history, in February 2025. This also signals the potentially increasing strategic importance of its American operations.
Cutting-Edge Manufacturing Infrastructure
The third Arizona facility will manufacture chips using 2-nanometer or more advanced process technology, with production potentially scheduled to begin by the end of this decade. This TSMC Arizona facility joins the first Arizona fab, which is expected to start volume production of 4-nanometer chips in late 2024, and a second fab currently under construction that will focus on advanced 2-nanometer technology with next-generation nanosheet transistors, targeted for production in 2028.
What distinguishes these facilities is their exceptional scale — each will feature cleanroom areas approximately double the size of a typical logic fab. This expanded capacity is designed to accommodate the extensive equipment required for leading-edge production, potentially positioning the operation at the forefront of semiconductor manufacturing technology in the United States.
Advanced Packaging and Supply Chain Integration
Beyond chip fabrication, the company is enhancing its U.S. presence through advanced packaging capabilities. In October 2024, TSMC signed an agreement with Amkor Technology to collaborate on advanced packaging at Amkor’s planned $2 billion facility in Peoria, Arizona. The partnership focuses on TSMC’s Integrated Fan-Out (InFO) and Chip on Wafer on Substrate (CoWoS) packaging technologies, which are critical for smartphone applications and artificial intelligence GPUs.
The proximity of TSMC Arizona’s front-end fabs and Amkor’s back-end facility is designed to accelerate overall product cycle times, potentially creating a more integrated and efficient semiconductor manufacturing ecosystem in Arizona. This collaboration addresses a crucial aspect of the semiconductor supply chain previously concentrated in Asia, allowing TSMC’s U.S. customers to have their chips both fabricated and packaged domestically.
TSMC will reportedly establish its own CoWoS advanced packaging plant in the U.S., part of its expanded Arizona campus. This should complement the company’s significant expansion of packaging capacity in Taiwan, where CoWoS capacity is projected to nearly triple to 90,000 wafers per month by the end of 2026.
Workforce and Economic Development
The expanded operation represents a potentially transformative investment for the region’s economy. When fully operational, the three fabs are expected to create approximately 6,000 direct high-tech jobs. The construction phase alone may generate many direct construction jobs, with many additional indirect supplier and consumer jobs anticipated throughout this decade.
Currently employing more than 3,000 people at its Arizona campus, spanning 1,100 acres, TSMC Arizona has catalyzed the development of the broader semiconductor ecosystem. According to the Greater Phoenix Economic Council, the region has attracted 39 semiconductor-related companies, resulting in the creation of more than 7,700 jobs and over $37 billion in capital investment. This clustering effect is transforming Phoenix into what some industry observers have dubbed the “Silicon Desert.”
Investment Growth and Government Partnership
The investment has undergone significant changes since its initial announcement. What began as a $12 billion commitment in 2020 expanded to $40 billion in 2022, then to $65 billion in 2024 with the addition of the third fab. In March 2025, TSMC announced an additional $100 billion investment, bringing the total to $165 billion.
Federal support through the CHIPS and Science Act has been substantial. In November 2024, the U.S. Department of Commerce finalized an award of up to $6.6 billion in direct funding for the project, along with up to $5 billion in loans. The company is also eligible for Investment Tax Credits of up to 25% on qualified capital expenditures.
Major technology companies have expressed support for the project. Jensen Huang of NVIDIA emphasized the importance of producing AI infrastructure manufacturing in America. Lisa Su of AMD highlighted their relationship as one of the first and largest high-performance computing customers, noting they’re proud to begin production of their leadership 5th Gen AMD EPYC server processors later this year. Apple has positioned itself as the largest customer at the TSMC Arizona facility, committing to sourcing chips as part of its broader $500 billion U.S. investment plan.
The campus incorporates significant sustainability measures, including a target of 90% water recycling through an advanced Industrial Water Reclamation Plant designed to achieve “Near Zero Liquid Discharge.” By the end of this decade, when all three Arizona fabs are operational, TSMC will potentially establish a comprehensive semiconductor manufacturing ecosystem in the United States, thereby strengthening supply resilience and reducing dependency on offshore production.
