Texas Governor Greg Abbott has approved tax incentive agreements for SpaceX's planned semiconductor manufacturing facility in Grimes County, a project with a stated capital expenditure exceeding $16.8 billion. However, documents and public filings suggest the headline figure may represent only the initial commitment, with total project expenditures potentially reaching far higher.

The facility, known as Terafab, is described as a joint undertaking by SpaceX and Tesla focused on manufacturing semiconductors for computing, artificial intelligence, and related technologies. While the publicly cited figure stands at approximately $17 billion, the initial investment phase could reach $55 billion, with total project costs potentially scaling to $119 billion. The project arrives amid a national push to expand domestic semiconductor production, accelerated by the federal CHIPS and Science Act of 2022, which committed roughly $52 billion in subsidies to onshore chip manufacturing and reduce U.S. reliance on foreign fabrication hubs concentrated in East Asia.

Planned Scope of the Grimes County Facility

Terafab is planned for land near the former Gibbons Creek coal plant. According to project documents, the facility could eventually encompass up to 100 million square feet. For comparison, the Pentagon—widely regarded as the largest office building in the United States—covers approximately 6.5 million square feet, meaning Terafab would exceed it by a factor of fifteen.

The tax incentive agreements were established under Texas's JETI program, which stands for Jobs Energy Technology Innovation.

In June 2026, Grimes County commissioners approved a 35-year tax abatement and reinvestment zone by a 4-1 vote. The agreement includes a $10 million upfront payment from SpaceX and $20 million in annual PILOT (payment in lieu of taxes) contributions, a mechanism designed to provide local governments with guaranteed revenue while extending tax relief to the company.

Local school boards subsequently voted on July 14, 2026, approving the agreements 5-2. Community members have raised concerns regarding the project's potential economic and environmental effects.

Commitments Under the JETI Agreements

Under the terms of the agreements, SpaceX is required to invest a minimum of $5 billion by 2030. The company must also create at least 1,800 full-time equivalent jobs by 2035.

As of early August 2026, the Terafab project remains in its pre-construction phase. Additional approvals and public engagement processes are required before construction can begin.

Texas has actively pursued semiconductor manufacturing investments in recent years. Samsung is among the major chipmakers that have expanded operations within the state, and Texas Instruments has maintained a long-standing manufacturing presence. State officials have cited Texas's relatively low cost of living, available land, and power infrastructure as competitive advantages in attracting large-scale industrial projects.

Corporate Collaboration and Supply Chain Considerations

The SpaceX-Tesla collaboration centers on shared semiconductor manufacturing infrastructure. Elon Musk's companies leveraging common production capacity could create a vertically integrated supply chain, potentially yielding cost efficiencies for both entities. The move aligns with a broader trend among large technology firms—including Google, Amazon, and Microsoft—that have invested in custom silicon design to reduce dependence on third-party chip suppliers.

Key milestones include the construction timeline and whether SpaceX meets the $5 billion investment threshold by 2030. That benchmark will determine whether the 35-year tax abatement remains in effect and whether the project scales toward the upper estimate of $119 billion in total expenditure.