SpaceX and xAI consider up to $119 billion ‘Terafab’ chip factory in Texas with Intel’s help

SpaceX, Elon Musk’s aerospace company that now houses his artificial intelligence venture xAI, is evaluating a massive investment of up to $119 billion to build a semiconductor manufacturing facility in Grimes County, Texas. The project, internally referred to as ‘Terafab,’ would be a vertically integrated chip fabrication plant designed to produce advanced semiconductors for AI servers, satellites, autonomous vehicles, and robotics.

According to a proposal filed on the Grimes County website, the initial phase of construction could cost approximately $55 billion. The document describes a ‘multi-phase, next-generation, vertically integrated semiconductor manufacturing and advanced computing fabrication facility.’

What is the Terafab project?

Musk has publicly outlined the Terafab as a response to what he describes as a critical shortage of advanced chips needed for his companies’ expanding AI and robotics ambitions. The facility is expected to produce enough chips to deliver one terawatt of power per year — a figure that underscores the enormous scale of the planned operation.

‘We either build the Terafab or we don’t have the chips, and we need the chips, so we build the Terafab,’ Musk wrote in a social media post, emphasizing the urgency behind the project.

The initiative brings together several Musk-led companies, including SpaceX, xAI, and Tesla, with chipmaking giant Intel contributing technical expertise and manufacturing know-how. The collaboration aims to develop chips tailored for a range of applications:

• AI servers powering xAI’s Grok model series
• Satellite communications for SpaceX’s Starlink network
• Space-based data centers proposed by SpaceX
• Autonomous driving systems for Tesla vehicles
• Humanoid robots under development at Tesla

Texas location not yet final

Despite the filing in Grimes County, Musk clarified in a post on Wednesday that Texas is only one of several locations under consideration. The final site selection remains open, though the state has become a growing hub for semiconductor manufacturing, partly due to incentives from the federal CHIPS and Science Act.

Grimes County, located northwest of Houston, offers significant land availability and a business-friendly regulatory environment, factors that likely influenced its inclusion in the proposal.

Why this matters for the AI and chip industries

The Terafab project reflects a broader trend among major technology companies to secure their own chip supply chains, reducing dependence on external foundries such as TSMC and Samsung. For Musk, the investment is a strategic move to ensure xAI has sufficient computing power to train and deploy its Grok AI models, which require massive amounts of data center capacity.

Musk has also cited the potential of space-based data centers as a key reason for merging xAI with SpaceX. The combined entity, reportedly valued at $1.25 trillion, is expected to go public in June, providing additional capital for ambitious projects like the Terafab.

Industry analysts note that the $119 billion figure, while enormous, reflects the escalating costs of leading-edge semiconductor fabrication. Building a single advanced chip plant can cost upwards of $20 billion, and the Terafab’s multi-phase approach could span years or even decades.

Conclusion

SpaceX and xAI’s proposed Terafab represents one of the largest industrial investments ever contemplated in the United States. If realized, it would reshape the domestic semiconductor landscape and provide Musk’s companies with a dedicated chip supply for AI, space, and automotive applications. However, the project remains in the proposal stage, with location and final investment levels still subject to change. The coming months, particularly around the planned IPO of the combined SpaceX-xAI entity, will offer clearer signals on whether this ambitious vision moves from paper to production.

FAQs

Q1: What is the Terafab?
The Terafab is a proposed vertically integrated semiconductor manufacturing facility that would produce advanced chips for AI, satellites, autonomous vehicles, and robotics. It is a joint effort between SpaceX, xAI, Tesla, and Intel.

Q2: How much will the Terafab cost?
The initial phase is estimated at $55 billion, with total spending potentially reaching $119 billion over multiple phases, according to a filing on the Grimes County, Texas website.

Q3: Is the Terafab location confirmed?
No. While a proposal was filed in Grimes County, Texas, Elon Musk has stated that Texas is only one of several locations under consideration. A final decision has not been announced.