Tesla and SpaceX Commit $16.8 Billion to a Texas Chip Fab They Call Terafab

Elon Musk's two largest companies are getting into chipmaking on their own terms. Tesla and SpaceX have committed an initial $16.8 billion to build a semiconductor plant in Texas that they are calling Terafab, a project first reported by TechCrunch.

Site, scale, and what the fab will do

The site sits in Grimes County, about an hour northwest of Houston, on land next to the Gibbons Creek Reservoir. The reservoir once cooled a coal plant that shut down in 2018 and will now supply water to the fab, which the companies describe as a single facility handling logic, memory, packaging, and testing in one place rather than spreading those steps across separate suppliers.

Why Tesla and SpaceX are building capacity in-house

The name is a statement of intent. Tesla and SpaceX say they will together need to produce more than a terawatt of compute a year, a level current and projected global chip output cannot supply, which is the reasoning they give for building capacity in-house rather than buying all of it. The chips are meant for edge and inference work: Tesla's Optimus humanoid robots and Cybercab robotaxis, along with high-power processors for the data centers SpaceX eventually wants to operate in orbit.

Terafab's place in Tesla's broader chip supply

It helps to separate this from Tesla's near-term chip supply. The company's current AI5 processor is already in production at Samsung's fab in Taylor, Texas, and a separate $16.5 billion agreement with Samsung covers the next generation, with some later work reportedly routed to TSMC in Arizona. Terafab is the longer game, an owned source of supply that is years rather than months away. Nothing in the announcement says the AI5 or AI6 chips will be made there.

A first phase, not a final commitment

SpaceX filings tied to the project have referenced much larger multi-phase totals, with figures that have shifted over the year, and the company has framed the plan as a general framework rather than a set of binding commitments, including no finalized split of intellectual property between Tesla and SpaceX. The companies have not put a production or completion date on it.

What is clear is the direction. Two of the most chip-hungry companies in the country are betting that the only way to guarantee the volume they need is to make it themselves, on a single Texas campus sized for a level of demand that does not exist yet.