Filings shared on X suggest $55B–$119B 'Terafab' plan tied to Musk

Elon Musk’s SpaceX has put a concrete price tag on Terafab, the semiconductor manufacturing project that had circulated for weeks through Musk-linked posts on X and the project’s own website. A filing made public on May 6 showed an initial $55 billion investment for a Texas facility, with total spending that could rise to $119 billion if later phases are built. Reuters reported the filing identified the project as a joint effort with Tesla and said the site is planned in Grimes County, Texas. Terafab’s website says Tesla, SpaceX and xAI are “launching” a combined effort spanning logic, memory and advanced packaging under one roof. ### Where did the $55 billion and $119 billion figures come from? A May 6 filing reviewed by Reuters set out the numbers that have driven the latest round of attention. Reuters said SpaceX proposed an initial $55 billion investment for the semiconductor facility and estimated total investment could rise to $119 billion if additional phases are completed. (usnews.com) Grimes County, Texas, separately published a 30-day notice saying county commissioners will consider a property tax abatement agreement for SpaceX at a June 3, 2026 meeting in Anderson, Texas. CNBC also reported that the capital investment figures were disclosed in a public hearing notice tied to SpaceX’s request for tax breaks. (usnews.com) ### What is Terafab, based on public records? Terafab’s own website describes the project as a chip-building effort by Tesla, SpaceX and xAI that combines logic, memory and advanced packaging “under one roof.” Reuters reported the proposed facility would be a multi-phase chip fabrication and advanced computing complex aimed at boosting domestic semiconductor production in the United States. March 21 is the date Musk publicly announced the project, according to CNBC’s reporting on later filings. (grimescountytexas.gov) Reuters, in a separate April factbox carried by syndication partners, said Musk had outlined Terafab as an advanced AI chip complex in Texas and linked it to chips for Tesla vehicles, Optimus robots and AI data centers. ### Is this tied to Tesla, xAI and Intel, or only to SpaceX? (terafab.ai) Reuters reported the Texas facility is a joint project with Tesla, even though the May 6 filing was made by SpaceX. CNBC reported the complex is designed to manufacture chips for SpaceX, xAI and Tesla, and said Intel joined the project in April to help design, fabricate and package chips at scale. (cnbc.com) April reporting on Tesla’s first-quarter earnings call added another technical detail. Reuters said Musk told investors Tesla planned to use Intel’s next-generation 14A manufacturing process for chips at Terafab. That does not by itself establish the final ownership or operating structure of the Texas plant, but it does show Intel has been identified publicly as a manufacturing partner. (usnews.com) ### What about the 1 terawatt annual compute target? Reuters said in April that Terafab would eventually produce one terawatt of computing capacity a year, a figure Musk had discussed in March. Other outlets that covered Musk’s launch event described the same target as one trillion watts of AI compute annually. (money.usnews.com) That target remains a stated objective, not an operating result. Reuters reported on May 6 that SpaceX said there was no assurance it would meet its Terafab objectives within expected timelines, or at all. ### Why did the story resurface on X this week? Posts on X circulated the Grimes County filing and connected it to Terafab.ai, Giga Texas and Musk’s broader push to secure in-house chip supply. (money.usnews.com) Reuters reported SpaceX’s filing highlighted plans to “manufacture our own GPUs” and said the company still relies significantly on third-party suppliers because it lacks long-term contracts with many direct chip suppliers. (usnews.com) The public thread therefore did not create the project, but it did push a local Texas filing and earlier Musk statements back into view. The most verifiable new development remains the May 6 filing and the scheduled June 3 county meeting on the proposed tax abatement agreement. (usnews.com)