Grimes County, Texas, just handed SpaceX one of the most generous tax deals in American manufacturing history. Commissioners voted 4-1 on June 3 to approve a reinvestment zone and a 100% property tax abatement for the company’s Terafab semiconductor facility, a project initially valued at $55 billion with the potential to scale to $119 billion across multiple phases.
What Terafab actually is
The Terafab project is a semiconductor manufacturing and advanced computing facility planned for a site near Gibbons Creek Reservoir, about 90 miles northeast of Austin. It’s a joint effort involving SpaceX, Tesla, and the newly integrated xAI, all under Elon Musk’s corporate umbrella. Intel has also reportedly shown interest in collaborating on the project.
The facility’s stated goal is to produce next-generation chips for AI and space applications, targeting an annual output of over 1 terawatt of computing power. The phased development structure explains the wide valuation range. The initial $55 billion represents the first buildout. Subsequent expansions could push total investment north of $119 billion.
The local fight and the money math
