Analysis
Tesla and SpaceX will spend an initial $16.8 billion to build a semiconductor manufacturing complex in Grimes County, Texas, the companies confirmed this week, with local officials calling it "Terafab." The site sits on land next to the Gibbons Creek Reservoir, about an hour northwest of Houston, and the first phase alone calls for more than 100 million square feet of manufacturing space and at least 3,000 jobs, according to TechCrunch.
The plant is designed to handle logic, memory, packaging and testing in one location rather than splitting those steps across the separate foundries, memory makers and packagers that TSMC, Samsung and Intel Foundry customers typically rely on. Musk's companies say they collectively need more than a terawatt of compute per year for Optimus robots, robotaxi fleets and orbital data-center payloads -- a figure Musk argues exceeds current and projected global chip supply. The Texas Enterprise Fund has extended a $30 million grant to SpaceX for the project, part of Pulse's tracked coverage of Tesla and SpaceX's compute ambitions.
Terafab is explicitly a first phase: SpaceX's own securities filings suggest total spending across every planned phase could eventually reach $119 billion, an order of magnitude beyond what's committed today. That gap between announced and actually-spent capital matters -- semiconductor fabs are notorious for multi-year delays even at experienced operators like Intel, whose Ohio fab has slipped its opening more than once.
The announcement lands the same week SpaceX told investors it will build its AI data centers exclusively on Nvidia's Rubin-generation chips, which on its face looks like two contradictory bets. It isn't: Terafab's stated purpose is custom silicon for Optimus and robotaxi compute plus orbital payloads, not the merchant GPUs SpaceX still needs from Nvidia to train and run its own AI models today. SpaceX stock closed up 15.83% on August 7 on a combination of the Terafab update, easing lockup fears and an analyst upgrade, Axios reported.
