Tesla and SpaceX have confirmed the Terafab chip factory Texas location as Grimes County, outside Houston, alongside an announced initial investment of $16.8 billion. The headline is enormous. The legal commitments, as it turns out, are rather more restrained.
Elon Musk, who runs both companies, described the planned facility as ‘the largest and most valuable building on Earth by far.’ SpaceX’s website puts the planned scale at over 100 million square feet of manufacturing space, designed to house chip manufacturing, packaging, and testing for advanced logic and memory devices. At least 3,000 jobs from Grimes and neighbouring Brazos County are promised.
The ambition behind the project is straightforward enough: Musk’s vision of humanoid robots, robotaxis, and space-based AI data centres requires computing power that current global chip production cannot supply. SpaceX has said in filings that the multi-phase construction plan could reach $119 billion in total outlay, though that is the top-end estimate if every additional phase is built. The initial phases were separately estimated at $55 billion. Musk has said the factory should eventually manufacture enough chips to supply 1 terawatt of computing power per year.
Intel has said it will contribute to Terafab, without specifying what exactly that contribution looks like.
Inside the Terafab Chip Factory Texas Is Banking On
SpaceX says chips produced at the facility will be ‘optimised for edge computing and inference’ for hardware including Tesla’s Optimus robots and self-driving Cybercabs, as well as high-power chips for SpaceX’s space-based data centres. Water supply will come from the local Gibbons Creek Reservoir rather than local groundwater, the company has committed.
The public incentives attached to the project are considerable. Governor Greg Abbott’s office confirmed a $30 million Texas Enterprise Fund grant for SpaceX, along with designation as a qualified project under the Texas Jobs, Energy, Technology, and Innovation (JETI) programme. Both Anderson-Shiro Consolidated Independent School District and Iola ISD voted 5-to-2 to approve partial tax abatement deals through the JETI programme. Phase one investment through Anderson-Shiro CISD is pegged at over $10 billion; through Iola ISD, over $6 billion.
At the county level, the Grimes County Commissioners Court voted 4-to-1 in June to approve a reinvestment zone and tax abatement agreement. The agreement is structured as a 35-year payment in lieu of taxes (PILOT), under which SpaceX made a $10 million upfront payment and commits to $20 million per year during the initial 10-year abatement period, after which terms are up for reassessment. The Austin American-Statesman confirmed SpaceX has already sent the $10 million cheque, ahead of the deadline, with County Judge Joe Fauth acknowledging receipt.
\h2>The Gap Between the Announcement and the Contract
That $16.8 billion headline figure deserves some scrutiny. 247 Wall St., citing SpaceX’s May 2026 filings, reports that the legally binding floor signed off by SpaceX CFO Bret Johnsen is considerably lower: at least $5 billion invested in Grimes County by 2030, and at least 1,800 full-time jobs by 2035. Both figures are well below the announced targets of $16.8 billion and 3,000 jobs.
Yahoo Finance, also citing SpaceX’s May 2026 IPO filing, reports that Terafab was characterised in that document as a ‘general framework’ with no binding commitments attached to the headline investment figure. In other words, $16.8 billion is a target, not a contractual obligation.
None of that dampened the mood at the Grimes County announcement. Hundreds of residents had attended a county meeting the previous evening, raising concerns about the scale of tax concessions and what they saw as a lack of transparency about the deal’s terms. Anderson-Shiro CISD Superintendent Dr. Sarah Borowicz addressed those concerns directly in a statement: ‘We believe this agreement will strengthen our district, expand opportunities, and better prepare our students for their future. There are defining moments in the life of a school district, and this is one of those moments.’
Whether the facility eventually looks like the Terafab chip factory Texas politicians are celebrating today, or something closer to what the binding filings actually guarantee, will become clearer once SpaceX breaks ground and construction milestones start (or do not start) being met. The first hard checkpoint: $5 billion in the ground by 2030.
