Zeiss Expands Oberkochen Plant to Unlock ASML EUV Scanner Output
The German optics monopoly is adding 25,000 square meters of production capacity to meet surging demand for chipmaking equipment.
Carl Zeiss SMT GmbH is breaking ground on a major expansion of its Oberkochen facility, adding 25,000 square meters of production space to keep pace with ASML's aggressive ramp-up of extreme ultraviolet lithography scanners.
The expansion includes new cleanrooms, production halls, and office space. The move underscores Zeiss's position as the sole supplier capable of manufacturing the ultra-precise mirrors and lenses required for ASML's most advanced chipmaking systems.
A Critical Bottleneck
Zeiss holds a unique position in the semiconductor supply chain. While ASML maintains a monopoly on EUV scanners themselves, those machines cannot function without Zeiss's optical systems. Each High-NA EUV optics module weighs approximately 12 tons and comprises more than 40,000 individual components, all manufactured to tolerances that no other company can match.
This concentration creates a fragile dependency: any capacity constraint at Oberkochen directly limits global output of the machines needed to produce AI chips and next-generation processors. The expansion is a strategic response to that bottleneck.
Matching ASML's Ambitions
ASML has announced plans to increase its own production capacity by 30% in 2027, followed by another 30% increase in 2028. Zeiss must grow in lockstep to supply the optics for those additional scanners. The Oberkochen expansion ensures the German supplier can meet that demand without becoming a constraint on the broader semiconductor industry.
The stakes are high. A single High-NA EUV system costs around €350 million, roughly twice the price of previous Low-NA systems. These machines are essential for manufacturing the most advanced logic and memory chips, making Zeiss's capacity a matter of strategic importance for the entire tech sector.
Why Oberkochen Matters
EUV lithography represents the cutting edge of chip manufacturing. Because extreme ultraviolet light is absorbed by nearly all materials, traditional lenses won't work. Instead, Zeiss produces specialized mirrors with surfaces so smooth that any imperfections would be measured in atomic-scale deviations.
The technology enables the production of chips with features measured in single-digit nanometers, powering everything from AI data centers to automotive electronics. As demand for these chips accelerates, Zeiss's ability to scale production at Oberkochen becomes a key factor in determining how quickly the semiconductor industry can grow.
The expansion signals confidence that EUV demand will remain strong through the end of the decade, even as chipmakers navigate cyclical downturns and geopolitical tensions. For now, the bottleneck is easing, but the concentration of expertise in one German town remains a defining feature of the global chip supply chain.