Musk’s 'Terafab' proposes two Austin chip fabs — timeline and capacity details

Elon Musk has pitched TERAFAB as a Texas chip project for Tesla, SpaceX and xAI, but the public record still leaves the two-Austin-fabs claim unconfirmed. (kut.org) (sec.gov) Musk unveiled TERAFAB at Austin’s Seaholm power plant on March 21, 2026, and said the Austin-area site would focus on chip design. He said the main manufacturing complex would need thousands of acres and that multiple locations were under consideration. (kut.org) At that launch, Musk said TERAFAB would be the “largest chip manufacturing facility ever” and target more than 1 terawatt a year of AI compute. KUT reported Tesla’s public TERAFAB post described one roof combining logic, memory and advanced packaging. (kut.org) A chip fab is the factory that etches circuits onto silicon wafers, while packaging is the step that connects finished chips so they can run inside cars, robots or servers. Musk’s pitch bundles those steps together instead of buying all of that capacity from outside suppliers. (kut.org) That matters for Tesla because its latest quarterly report says capital spending rose to $2.49 billion in the first quarter of 2026, mainly for global artificial intelligence and operational infrastructure, factory expansion, and machinery and equipment. (sec.gov) Tesla’s April 22, 2026 shareholder update said it had started ramping additional AI compute and was preparing production lines for Cybercab, Megapack 3 and the Tesla Semi. The company did not disclose a TERAFAB construction timeline in that update. (tesla.com) The clearest hard evidence of work in Austin is hiring. Tesla is recruiting a Silicon Module Process Engineer in Austin for TERAFAB, with duties that include new tool installation, process qualification, production ramp and support for high-volume manufacturing. (tesla.com) Tesla is also hiring TERAFAB engineers in Palo Alto, including module-process and process-integration roles tied to advanced logic system-on-chip work. Those postings mention “sister fabs,” which suggests a multi-site manufacturing plan, but they do not identify two Austin fabs by name or schedule. (tesla.com 1) (tesla.com 2) Intel’s own foundry materials show Intel 14A is still in the preview stage, with customers able to start engagements now rather than buy chips from a mature high-volume line today. Intel said on April 23 that Intel 18A products were in full volume ramp, while 14A maturity and yield were progressing. (intel.com 1) (intel.com 2) That leaves the timeline in a narrow band: TERAFAB was announced in March, Tesla is staffing Austin and Palo Alto roles in April, and Tesla’s filings show heavier AI and factory spending. Public filings still do not pin down when a main fab would break ground, when production would start, or how much of the 1-terawatt target would come from Austin. (kut.org) (tesla.com) (sec.gov)