TSMC May Take Lead Role at Tesla's Texas Fab
Reported talks could hand fab construction and operations to TSMC, with a test chip targeted for 2027.
Updated on Nov. 2, 2026 in Semiconductors
Tesla CEO Elon Musk is reportedly reconsidering how much control to keep over the Terafab chip project in Texas, and has softened his stance on working with TSMC, according to supply chain sources cited by Digitimes. The report, published Sunday, describes talks that could move toward TSMC taking primary responsibility for fab construction and operations, though equity and investment arrangements remain under discussion. The development is reported, not confirmed by the companies, which did not immediately respond to requests for comment.
Why it matters
Terafab is a planned in-house chip fabrication effort, and a shift from Tesla and SpaceX running the fab to TSMC leading it would change who controls the manufacturing route for Tesla's custom silicon. The reported renegotiation follows Musk's April statement that Tesla would use its 14A process at the project, and Intel Corp. was earlier publicly tied to the effort.
The reporting rests on unnamed supply chain sources rather than official filings, so no capacity, yield or cost figures for Terafab have been disclosed. Tesla's stock was at $399.81 on Friday, with Benzinga Edge placing its Momentum score at the 71st percentile and Growth at the 22nd.
The players
Tesla
Electric vehicle maker whose custom chip ambitions under Terafab are the subject of the reported renegotiation with TSMC.
TSMC
Taiwan Semiconductor Manufacturing Company, the world's largest contract chip foundry and a possible primary operator of the Terafab fab.
SpaceX
Musk-led aerospace company that, alongside Tesla, was slated to build and run the Austin, Texas research fab under the earlier plan.
Intel Corp.
U.S. chipmaker that was the first major company publicly tied to Terafab, with its role unclear if TSMC takes a larger one.
The details
A chip fab is a factory that prints transistor patterns onto silicon wafers, and building one requires enormous capital and process expertise. Under the current framing, Tesla and SpaceX would build and operate Terafab, with TSMC possibly subleasing part of the site, but the reported talks could reverse that arrangement so TSMC handles construction and daily operations. Equity and investment terms between the companies are still being negotiated.
Timeline
April 2026: Musk said Tesla would use its 14A process at Terafab.
October 2026: Musk said Tesla and SpaceX would build and run the fab.
Sunday, November 1, 2026: Digitimes published its report on the TSMC talks.
Around May or June 2027: Musk aims to have a test chip working at the Austin, Texas research fab.
Q3 or Q4 2028: Musk called volume production at Terafab an aspiration.
The Tech Race
Intel was the first major chipmaker publicly connected to Terafab, and the reported move toward TSMC would place the project with the world's largest contract foundry instead. The shift reflects how custom chip makers are weighing in-house fabrication against partnering with established foundries.
Availability of Terafab-made chips for Tesla products is not announced, and no timeline for consumer-facing products has been given. Any shift in who runs the fab would first affect the companies involved, with no change to products on the market today.
The takeaway
The reported talks show that even a company with Musk's ambitions may rely on a established foundry for fab operations. Watch whether Tesla, TSMC or SpaceX confirm the renegotiation and its equity terms, and whether Musk's test-chip target for May or June 2027 is met.
What happens next
Musk aims to have a Terafab test chip working around May or June 2027 at the Austin, Texas research fab, a date that will show whether the project's timeline is holding.
Further reading
For broader context on who is building the chips behind this story, see our Semiconductors coverage.
