Elon Musk unveils $20 billion ‘TeraFab’ chip project to make chips, memory, and package processors all under one roof — targets a terawatt of annual compute

Tesla and SpaceX CEO, Elon Musk, announced Saturday night that his TeraFab semiconductor project will be built on the Tesla campus in eastern Travis County, Austin, Texas, as a joint venture between the two companies.

In a livestream broadcast via X, Musk stated that the facility exists because the global chip industry cannot expand quickly enough to meet his projected demand across AI, robotics, and space computing. "That rate is much less than we'd like," Musk said from the defunct Seaholm Power Plant in downtown Austin. "We either build the TeraFab, or we don't have the chips, and we need the chips, so we build the TeraFab." The project reportedly carries a $20 billion price tag.

Announcing TERAFAB: the next step towards becoming a galactic civilization https://t.co/xTA70LOU0eMarch 22, 2026

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The Austin fab will house equipment for logic, memory, packaging, testing, and lithography mask production in a single building. Musk claimed that capability does not exist at any other facility in the world, and that having everything under one roof enables a rapid iteration loop: make a chip, test it, revise the mask, and repeat without shipping wafers between sites.

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The facility is expected to produce two types of chips. One will be optimized for edge inference, primarily for Tesla's vehicles and Optimus humanoid robots. The other will be a higher-power chip hardened for the space environment, which Musk says will run hotter than “terrestrial” designs to minimize radiator mass on satellites.

Musk compared the project to the current global output of global AI compute, which he estimated at roughly 20 gigawatts per year. That figure, he said, represents about 2% of his companies’ eventual needs. On the terrestrial side, he projected 100 to 200 gigawatts per year of chip output; the remainder, up to a terawatt, would go to space-based AI compute aboard solar-powered satellites that SpaceX has already petitioned the FCC to launch.

“That's why I think it's probably a hundred to two hundred gigawatts a year of terrestrial chips, and probably on the order of a terawatt of chips in space," noted Musk. "Just because of power constraints on the ground.”

Musk said Tesla, SpaceX, and xAI — which SpaceX acquired in February — will continue buying chips from existing suppliers, including TSMC, Samsung, and Micron, adding that he would like them “to expand as quickly as they can.” He gave no timeline for when the TeraFab would begin producing chips or reach its target output, and while he has previously referenced 2nm as the target process node, he didn’t repeat that figure in the broadcast.

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Luke James is a freelance writer and journalist. Although his background is in legal, he has a personal interest in all things tech, especially hardware and microelectronics, and anything regulatory.

30 Comments Comment from the forums

usertests

I can buy that getting everything into one building may lead to optimizations and cost reductions. But I didn't hear anything about paying the ASML toll or how they can possibly get to 50x production of everyone else combined. Whereas Substrate ("likened to a fraud") at least has the idea of beating ASML at its own game.
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TerryLaze

Isn't $20billion a fart in the wind compared to the FABs already producing chips in the USA? Not even counting the $100+ intel invested in the last years or the $100+ that tsmc invested in USA FABs. (those don't produce yet)
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Zaranthos

I won't be at all surprised if he ends up with a USA based chip fab that outperforms many other fabs. If he can get Tesla bots doing labor he'll eliminate much of the domestic production argument that labor is too costly in the US. He also continually gets underestimated about his ability to do what the so-called experts say is impossible. According to much of the media and experts Tesla was never supposed to achieve mass production goals, SpaceX would fail, X (Twitter) was doomed to fail as well but still dominates the market space by far. Even if he doesn't outperform he probably still saves money in the long run by making chips in house instead of paying someone else to do it.
Reply
usertests

Zaranthos said:
I won't be at all surprised if he ends up with a USA based chip fab that outperforms many other fabs. If he can get Tesla bots doing labor he'll eliminate much of the domestic production argument that labor is too costly in the US. He also continually gets underestimated about his ability to do what the so-called experts say is impossible. According to much of the media and experts Tesla was never supposed to achieve mass production goals, SpaceX would fail, X (Twitter) was doomed to fail as well but still dominates the market space by far. Even if he doesn't outperform he probably still saves money in the long run by making chips in house instead of paying someone else to do it.
That figure, he said, represents about 2% of his companies’ eventual needs.
If he "eventually" wants 55-60x of current global fab capacity, that seems unlikely.

SpaceX has done well and the Falcon 9 capability would outlast the company if it suffered financial problems. Tesla, X, and xAI all face big problems. If the AI bubble bursts, the market won't be kind to Terafab and space datacenter plans.

At some point, risk beats hype. Car companies are hard. A car company transforming into a robotics company is a crazy gamble.
Reply
thestryker

Who's going to license all of the IP required to make this functional?

I absolutely believe such a facility can be made, but no company in their right mind is going to license manufacturing nodes or product technology to make it function. That would mean either buying up smaller companies or developing it themselves both of which are expensive and would take a while. Then there's also being beholden to ASML's timelines since they can only make so many EUV machines per year. Lastly they need sufficient support companies which may be tricky at this scale though I imagine money greases this wheel since Samsung already has fabs in the general area so it should just be expanding existing infrastructure as opposed to entirely new.
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DataMeister

What is the purpose of referring to the number of chips being made by the gigawatts or terrawatts of electricity being used instead of the actual number of chips?
Reply
usertests

DataMeister said:
What is the purpose of referring to the number of chips being made by the gigawatts or terrawatts of electricity being used instead of the actual number of chips?
It could be a manipulation:

The other will be a higher-power chip hardened for the space environment, which Musk says will run hotter than “terrestrial” designs to minimize radiator mass on satellites.
But gigawatts/terawatts could be a good way to measure the satellite fleet since the sats are going to take in and dissipate predictable amounts of power.
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CelicaGT

More announcements to bump stock price. I'm reasonably sure this project will not get past the paper stage just like all the others.
Reply
bit_user

Zaranthos said:
I won't be at all surprised if he ends up with a USA based chip fab that outperforms many other fabs.
It has taken teams of researchers decades to achieve current lithography nodes. It's not easy for someone to come along and just spin up a completely new foundry, unless they license or steal the IP for it.

I don't know who would license Musk 2 nm-equivalent technology, or who he would acquire to get it. For a while, I was worried he'd buy Intel.

Zaranthos said:
If he can get Tesla bots doing labor he'll eliminate much of the domestic production argument that labor is too costly in the US.
Although Taiwanese fab workers are paid less than their US-based counterparts, that's not the main reason TSMC has gotten ahead. Semiconductor fabrication is the ultimate high-value manufacturing, which is why Intel could compete in the past. What's currently holding them back is not labor costs.

Zaranthos said:
He also continually gets underestimated about his ability to do what the so-called experts say is impossible.
He also has a long history of underestimating hard problems and completely missing his stated goals. Hyper Loop and fully-autonomous self-driving are two of the bigger examples.

Zaranthos said:
X (Twitter) was doomed to fail
It's still failing (i.e. losing money), but we lack visibility because he took it private and then merged it with his AI company, which he then merged with SpaceX. He's just playing a shell game to hide all the money it's losing under the one rock that's (still) successful (i.e. SpaceX).
Reply
bit_user

thestryker said:
Lastly they need sufficient support companies which may be tricky at this scale though I imagine money greases this wheel since Samsung already has fabs in the general area so it should just be expanding existing infrastructure as opposed to entirely new.
Samsung's expansion plans should already be stressing suppliers, I'd imagine. Furthermore, what supplier is going to take a gamble on expanding capacity, on the basis of Musk's crazy scheme?
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