Elon Musk has announced plans for a massive, joint-venture chip manufacturing complex named "Terafab," to be built in Austin, Texas, and operated by Tesla, SpaceX, and xAI. The announcement, made at a defunct power plant in Austin, outlines a project of unprecedented scale aimed at securing the AI computing capacity needed for Musk's companies' future ambitions.
The Terafab facility will consist of two separate fabrication plants, each dedicated to a single chip design. One chip will be engineered for use in Tesla vehicles and the Optimus humanoid robot. The other, more specialized chip, will be built for AI computing in space, designed to withstand harsher thermal and radiation conditions. Musk stated that current global chip output from suppliers like Samsung, TSMC, and Micron would meet only about 3% of his companies' long-term needs, necessitating this massive in-house production effort.
The project's name, "Terafab," references Musk's goal of producing chips that collectively require one terawatt of electricity to run annually—a computing capacity equivalent to roughly one billion Nvidia Blackwell chips per year. For context, the entire United States currently generates only about half a terawatt of electricity.
In a surprising revelation, Musk indicated that approximately 80% of Terafab's output is destined for space-based AI computing. He envisions SpaceX handling AI processing in orbit, similar to how hyperscalers operate data centers on Earth. This shift is driven by Earth's limited power capacity. The plan involves deploying solar-powered AI satellites, starting with a 100-kilowatt prototype and scaling to megawatt-range versions.
The logistical backbone of this space-based compute vision is SpaceX's Starship. Musk stated that reaching the terawatt target would require launching about ten million tons of material into orbit each year. With the current Starship V3 capable of 100-ton payloads and a future V4 targeting 200 tons, reducing launch costs is critical. Musk aims to slash costs from the current $1,000-$2,000 per kilogram to $100-$200 per kilogram, which he believes could make orbital AI systems cheaper than terrestrial ones within 2-3 years.
The financial and temporal scale of Terafab is immense. Initial project phases are expected to cost tens of billions of dollars, on top of Tesla's existing plan to spend $20 billion on new equipment in 2026. Musk is targeting first chip production in late 2027, with full-scale volume output by 2028—an aggressive timeline compared to the typical three-year cycle for semiconductor fabs.
The market reaction was initially negative for Tesla, with its stock falling around 2–3% in premarket trading following the announcement, adding to a year-to-date decline of 18% at the time.
