The new facilities will manufacture 2-nanometer and more advanced semiconductors that power AI accelerators, cloud computing infrastructure and other high-performance computing applications while strengthening the domestic semiconductor supply chain and supporting long-term demand from U.S. customers.

"With a strong collaboration and support from our leading U.S. customers and U.S. federal, state, and city governments, we would like to announce an additional USD100 billion investment in Arizona," Chairman and CEO C.C. Wei said during the company's second-quarter earnings call July 13.

The expansion will build "several more semiconductor logic wafer fabrication plants for 2-nanometer and below technologies, as well as advanced packaging fabs, to support strong multi-year demand from our leading U.S. customers," he added.

The expansion also broadens the company's advanced packaging footprint in Arizona, an increasingly important part of semiconductor manufacturing that integrates multiple chips into a single package for AI and high-performance computing systems. Executives indicated both front-end wafer fabrication and advanced packaging capacity are being expanded to meet customer demand.

AI Demand Drives Construction Surge

Rather than attributing the expansion primarily to federal industrial policy, they repeatedly cited sustained AI-driven demand as the catalyst for accelerating construction.

"The AI megatrend continues to drive the need for more and more computation," Wei said. "Our conviction in the multi-year AI megatrend remains very high."

Reflecting that outlook, Taiwan Semiconductor simultaneously raised its 2026 capital spending plan to between $60 billion and $64 billion, up from earlier guidance, saying higher investment levels are directly tied to future growth opportunities. The company said it does not anticipate equipment bottlenecks that would constrain expansion because it works with suppliers years in advance to prepare manufacturing capacity.

Wei also said the company is planning capacity against the broader AI construction boom, monitoring the pace of data center development before committing additional manufacturing capacity.

"We are checking the AI data centers' progress, the building, the location, the demand, the racks," he said, adding that the company tracks projects to ensure chips are delivered into operating facilities rather than sitting in inventory.

Schedule Tied to Market Forces

While analysts repeatedly pressed executives for a construction schedule, Wei declined to commit to firm completion dates, saying customer demand and market conditions will dictate future phases.

A heavy-lift crane works on construction of one of TSMC's semiconductor fabrication plants at the company's Phoenix campus. The latest $100-billion expansion will add four more advanced fabs, extending one of North America's largest industrial construction programs. 

Image courtesy of TSMC

"We do have a plan," Wei said. "But ... the schedule most of the time [depends] on the market situation and our customers' demand.... We try to speed it up as fast as possible."

Asked how many facilities the additional investment would ultimately build, Wei replied there would be "probably additional four or more fabs," confirming the scale of the next expansion phase.

The announcement extends a construction program that has steadily grown since Taiwan Semiconductor selected Phoenix in 2020 for its first U.S. advanced semiconductor manufacturing site. The investment initially announced at $12 billion has expanded several times before the latest commitment.

The first Arizona fab entered high-volume production in late 2024 using the company's N4 process technology, the second fab has completed construction and is expected to begin 3-nanometer production in 2027 and the third fab broke ground in 2025 for future 2-nanometer and A16 manufacturing. The campus spans more than 1,100 acres.

Arizona Commerce Authority President and CEO Sandra Watson called the expansion "a watershed moment for Arizona and America's semiconductor industry—strengthening U.S. competitiveness and securing critical supply chains for decades to come."

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State officials said Arizona has attracted more than 70 semiconductor expansions since 2020 totaling more than $314 billion in announced investment across manufacturing, advanced packaging, equipment suppliers, research and workforce development.

Phoenix Mayor Kate Gallego said company investment "reflects the extraordinary momentum and ability we have in Phoenix." Arizona operations currently employ more than 3,500 workers.

Once the announced facilities are completed, the chipmaker said roughly 30% of its global 2-nanometer and more advanced production capacity will be located in Arizona, creating one of the world's largest concentrations of leading-edge semiconductor production outside Taiwan.