ASML Warns Musk's Terafab Project May Face Supply Constraints
Claire Weston
ASML CEO Fouquet said on June 17 that projects like Terafab are opportunities — provided ASML itself is not supply-constrained. This means lithography tool allocation will directly shape whether Musk's mega-fab stays on schedule.
What exactly is Terafab?
The project, jointly advanced by SpaceX, Tesla and xAI since March 2026, targets 2-nanometer advanced process technology.
Planned annual output: 100–200 billion AI and memory chips, roughly 100,000 wafers per month.
The first chip to enter mass production is Tesla AI5, targeted for 2027.
This means → Terafab is not a single production line — it is a mega-fab rivaling the world's largest fabs in scale.
Is the money enough — how big is the budget?
Initial capex has risen to roughly $55 billion; if all expansion phases proceed, total spending could reach $119 billion.
Bernstein Research estimates that hitting 1 terawatt of annual compute would require about $5 trillion and 142 to 358 fabs.
In plain terms = Musk's current budget covers the first building block. The ultimate "1 terawatt" goal is two orders of magnitude away in funding.
Why is ASML the critical bottleneck?
ASML is the only company in the world that makes EUV lithography tools — machines that etch chip circuits with extreme-ultraviolet light — essential for the 2 nm node.
The company's order backlog stands at €38.8 billion; EUV system backlog hit a record 45 units in Q1 2026.
ASML plans to ship about 60 low-NA EUV tools in 2026, up 25% year-on-year; the 2027 target is roughly 80.
This means → Annual capacity growth is only in the low double digits, yet Terafab alone could consume a significant share of that increment.
AI demand is coming in so strong that we will be in a supply-constrained market for quite some time.
Christophe Fouquet
CEO, ASML
(May 2026, public remarks)
What signal did Fouquet's latest remarks send?
At the Vivatech conference in Paris on June 17, Fouquet called Terafab "an example of a large fab project" — then immediately stressed "provided you are not supply-constrained."
This reflects that although ASML has confirmed its participation, the delivery sequence and allocation timeline remain unsettled.
In plain terms = ASML is saying: "We'll show up, but the queue is long — and you may not be at the front."
What other uncertainties remain — internal dissent and the timeline?
On June 10, ASML invited Musk to address its internal annual tech conference via video link. Some employees publicly objected, revealing internal disagreement over collaborating with Musk.
Morgan Stanley analysts note that even under the most optimistic assumptions, Terafab's first chip output would not arrive until mid-2028 at the earliest.
This means → Beyond funding, Terafab still faces harder-to-coordinate obstacles: time and consensus — from equipment scheduling to internal buy-in.
Content is for reference only, not financial advice.