Terafab: Global Case Study

Overview

Two Texas Fabs Built for Three Captive Customers

Elon Musk first proposed Terafab at the Tesla shareholder meeting in November 2025 and unveiled it at the Seaholm Power Plant in Austin on March 21, 2026.

Terafab targets 1 terawatt (TW) of new AI compute a year, most of it for orbit. The Tesla-run Research Fab on the Giga Texas North Campus develops processes at a few thousand wafers a month on a $3 billion Tesla commitment. The SpaceX-run Production Fab sits on the site of the retired Gibbons Creek Steam Electric Station in Grimes County, a coal plant of the Texas Municipal Power Agency (TMPA), and carries a $16.8 billion first phase confirmed by SpaceX, Tesla and Governor Greg Abbott on August 6, 2026. County tax filings put the full four-phase buildout at up to $119 billion.

Intel joined in April 2026, and Musk named Intel 14A, the process after Intel 18A, for the full-scale fab. SpaceXSI, the former xAI that merged into SpaceX, is the third customer. Site and permit detail is at Terafab Grimes County and Terafab Research Fab at Giga Texas.

Capital

Terafab's $119 Billion Filing Ranks Behind TSMC Arizona and Ahead of Micron Clay

TSMC added $100 billion to its Arizona plan in July 2026, lifting the pledge to $265 billion. Micron broke ground on its $100 billion, four-fab memory campus in Clay, New York, in January 2026. Samsung plans more than $37 billion in Central Texas, led by its 2nm fab at Samsung Taylor. TSMC, Samsung and Intel fund these buildouts from existing chip businesses. Terafab draws on Tesla's $3 billion, SpaceX cash, and the roughly $75 billion SpaceX raised when its initial public offering (IPO) priced at $135 a share on June 11, 2026, a deal that valued the company at $1.77 trillion. SpaceX reported nearly $100 billion of cash in its first quarterly report in August 2026.

Bernstein estimated in March 2026 that 1 TW of AI compute a year would take 140 to 360 new fabs of 50,000 wafer starts a month at about $35 billion each, or $5-13 trillion, before networking, optical, analog and power chips. The SpaceX S-1 filed May 20, 2026, describes only "a general framework for the future development of Terafab" agreed with Tesla, and leaves timelines and capital spending undetermined.

Integration

Chip Design, Fab and End Product Sit Under One Owner

TSMC builds chips for Apple, NVIDIA, AMD and Qualcomm but sells no end products. Samsung and Intel make some of their own chips and sell foundry capacity to others. Apple designs its own silicon but buys all of it from TSMC. Terafab puts design, masks, logic, memory, advanced packaging and test inside the companies that build the vehicles, Optimus humanoids, Cybercab robotaxis, Starlink and AI1 satellites, and AI data centers the chips run in. Musk has said nearly all output goes to Tesla, SpaceX and SpaceXSI.

Tesla's AI5 inference chip taped out in April 2026 to both Samsung, at its Taylor fab, and TSMC, which leaves AI6 and AI7 as the first generations the Research Fab can shape. Musk confirmed talks with TSMC in early October 2026 ("Just discussions, but something may come of it"). TSMC Chairman C.C. Wei confirmed the talks on October 15 and said a TSMC plant in Texas must be run by TSMC; Musk replied that "we will build and run the fab." Intel said the same month it will keep working on the project.

Every EUV (extreme ultraviolet) lithography scanner comes from ASML in the Netherlands, and US and Dutch export rules bar their sale to China. China's leading foundry, SMIC, and Huawei's chip partners produce 7nm-class logic on older deep ultraviolet (DUV) tools, so a 14A-class fab in Texas depends on the same ASML queue as TSMC, Samsung and Intel.

Orbital compute

Most of the 1 TW Target Is for AI Satellites

SpaceX plans solar-powered AI data center satellites under the Starmind name. The first design, AI1, carries a compute payload of up to 250 kilowatts (kW) peak and 175 kW average, with a 75 meter wingspan and a deployed height of about 30 meters. NVIDIA is co-designing the payload with Rubin GPUs and Vera CPUs, announced August 4, 2026. SpaceX is building the satellites at its Gigasat factory in Bastrop, with mass production planned from as early as late 2027 and custom Terafab silicon in later versions.

Chips for orbit need radiation-tolerant design and testing. The Texas A&M Cyclotron Institute in College Station, near the Grimes County site, runs the heavy-ion beam tests that flight chips must pass.

Constraints

Only the First Phase Is Funded and Scheduled

• Capital: $16.8 billion of the $119 billion filing is confirmed, and the S-1 calls Terafab a framework, not a contract.
• Partners: Intel and any TSMC role have no published terms, and the S-1 leaves Tesla and Intel participation to later agreements.
• Schedule: Grimes County filings list a December 1, 2026 construction start and completion by the end of 2028; SpaceX targets limited operations toward the end of 2027.
• Research Fab: site clearing began in August 2026 and foundation pours started September 22, 2026, on the first of four main structures.
• Tools: EUV scanners come only from ASML, through multi-year delivery queues.

Related coverage

Related Coverage

• Terafab Grimes County
• Terafab Research Fab at Giga Texas
• Brazos Valley Semiconductor Concentration
• Samsung Taylor Fab
• SpaceX Gigasat Bastrop
• Why Texas