Taiwan Semiconductor Manufacturing Company said on July 16 it will invest an additional US$100 billion in Arizona to build four more 2-nanometer or more advanced fabrication plants, in a move that redraws the map of leading-edge chipmaking and gives the United States its first true offshore cluster for TSMC's most advanced logic nodes.
Ten Fabs, Two Packaging Plants, One R&D Center
The Phoenix expansion lifts TSMC's cumulative Arizona commitment to US$265 billion, funding 10 fabs, two advanced packaging facilities and a research and development center. Upon completion of the announced projects, around 30% of TSMC's global 2-nanometer and more advanced capacity will sit in Arizona, creating what CEO C.C. Wei described as an "independent leading-edge semiconductor manufacturing cluster" outside Taiwan.
TSMC's first Arizona fab has been in volume production of N4 technology since late 2024, with yields the company says are comparable to its Hsinchu lines. Construction of the second fab, which will run 3-nanometer processes, is complete, and volume production is expected to begin in 2027. The new tranche of four fabs will be built out over multiple years, with Wei declining to commit to a specific completion schedule.
AI Demand Is Underwriting The Build-Out
The announcement lands the same week TSMC reported a record Q2 2026 profit surge of 77% on US$40.2 billion in revenue, with high-performance computing chips for customers including NVIDIA, Apple and AMD now accounting for two-thirds of the foundry's sales. Wei has said CoWoS advanced-packaging capacity is sold out through year-end, and the Arizona packaging facilities are meant to give US-based hyperscalers a domestic alternative for the last mile of AI chip assembly.
Arizona Becomes America's Semiconductor Headquarters
Governor Katie Hobbs and Phoenix Mayor Kate Gallego framed the deal as a watershed for US industrial policy, noting Arizona has now attracted more than 70 semiconductor expansions since 2020 worth over US$314 billion in cumulative investment. TSMC Arizona employs roughly 3,500 people today and will scale headcount as new fabs come online. The state has spun up the Future48 Semiconductor Workforce Accelerator and the NNME Southwest Node to train the technicians and engineers the cluster needs.
Why It Matters
The build-out cements TSMC's position at the center of the AI chip supply chain and lands amid a broader wave of onshore capacity commitments, from ASML's raised full-year EUV guidance to Samsung's TPU foundry wins for Google. For customers, the Arizona expansion is insurance against geopolitical shocks; for TSMC, it is a hedge that its most valuable customers now consider structural.
Reporting based on coverage from the City of Phoenix, Data Center Dynamics and Reuters.