Technology & Science

Musk Unveils $25 B “Terafab” Megafactory in Austin to Make 1 TW of AI Chips

On 21-22 March 2026 Elon Musk announced that Tesla, SpaceX and xAI will jointly build “Terafab,” a fully-vertical 2 nm semiconductor complex in Austin capable of producing up to one terawatt of compute per year—an order-of-magnitude jump over current global output.

By Priya Castellano

Focusing Facts

  1. Musk says the site will cost roughly $25 billion and target 1 million 300 mm wafer starts per month once fully ramped.
  2. Terafab will house two separate lines: an inference/edge chip for Tesla cars & Optimus robots and a radiation-hardened “D3” chip for space-based data-centers, with 80 % of the factory’s compute slated for orbit.
  3. The fab aims for the leading-edge 2 nm node, consolidating design, lithography, memory, packaging and testing under one roof—something no U.S. plant currently does.

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