The price tag on Elon Musk's chip plant just got a real number. It is $119 billion if the full plan plays out.
Phase one alone is $55 billion. That puts Terafab among the most costly private projects ever built in the U.S.
It is not for cars or rockets. It is for chips.
Why Musk Is Building Terafab
Musk has spent the last year saying his firms can't get enough chips. Tesla, SpaceX, and xAI - now folded into SpaceX as SpaceXAI - all need more chip output than the current plants can give them.
Taiwan Semiconductor is booked solid. Nvidia and Apple have most of its slots locked up for years.
So Musk is starting his own plant from scratch in East Texas. Ben Bajarin, a chip analyst at Creative Strategies, called it a "15-year strategy" to control the supply chain.
"You don't just wake up one day and say, 'I'm going to be a foundry,'" Bajarin said. The plant outside Austin will pack logic, memory, and packaging on one site.
Musk has called it the "most epic chip-building effort ever."
The Intel Partnership
Intel is the surprise partner. In April, Intel agreed to help design and build the Terafab chips at scale.
That was the first big outside customer Intel's foundry side has ever landed. The market loved it.
Intel's stock more than doubled in April. It was its best month ever, with investors buying the foundry pivot.
Tesla plans to use Intel's coming 14A process at the plant. On the last earnings call, Musk said Tesla is also building a smaller research fab in Austin for around $3 billion.
That smaller fab can crank out a few thousand wafers a month. SpaceX will handle the bigger version, putting up most of the cash for the full buildout.
The Geopolitical Angle
On a Tesla earnings call in January, Musk said key chip suppliers can't make enough hardware for what Tesla needs. He framed Terafab as cover against geopolitical risk.
That usually means concerns about Taiwan and TSMC. The U.S. has spent billions in subsidies trying to bring more chip output home.
TSMC has been adding U.S. fabs of its own. But the wait time on top-end output is still measured in years.
For Musk's AI plans, that timeline is a problem. Building his own foundry is the costly path. It is also the most certain way to lock in supply.
What To Watch
The Grimes County hearing on June 3 will decide if Musk gets the property tax breaks SpaceX is asking for. That ruling sets the table for what comes next.
SpaceX filed for an IPO in April with a planned $1.75 trillion price tag. That would make it one of the biggest debuts ever.
The chip plant is part of the pitch to investors. A foundry of this size doesn't get built without big subsidies, big partners, and a big balance sheet.
Musk is trying to line up all three at once. Investors will be watching whether the county hands SpaceX the tax break, since that ruling sets the tone for every other site decision down the line.
