South Korean tech giants to build a $518 billion chipmaking hub to serve soaring AI demand

Samsung Electronics and SK Hynix said Monday they will invest a combined 800 trillion won, or about $518 billion, to build a new semiconductor hub in South Korea’s southwest, a sweeping buildout aimed at meeting soaring demand for chips used in artificial intelligence infrastructure.

President Lee Jae Myung announced the plan at the Blue House in Seoul with Samsung Chairman Lee Jae-yong and SK Hynix Chairman Chey Tae-won. The announcement framed the project as both an industrial strategy and a regional development push, with the government trying to move more large-scale investment beyond the greater Seoul area.

The companies said the project will include four fabrication plants in total, with AP reporting that each company plans to build two fabs. Samsung said its new facilities will be built in Gwangju, while SK Hynix said the hub will require large sites, dependable power, abundant water and skilled workers.

The scale of the commitment is unusually large even by South Korea’s standards. Samsung and SK Hynix together make about two-thirds of the world’s memory chips, according to AP, and the new investment underscores how aggressively the country’s chip leaders are positioning themselves for AI-related demand.

What was announced

The core announcement was the 800 trillion-won investment for a new semiconductor cluster in the southwest. AP described the plan as a combined effort by Samsung and SK Hynix to expand manufacturing capacity in a region outside their traditional Gyeonggi Province base.

The broader package goes beyond chip fabs alone. AP said the government outlined a national semiconductor ecosystem that would place chip components and materials in the southeast, chip packaging in the central Chungcheong region and data centers across the country.

The Financial Times and The Wall Street Journal both reported the initiative as part of a wider industrial program under President Lee. FT described it as part of his “Three Mega Projects for the Great Leap Forward,” while WSJ said the broader package includes 81 trillion won for chip-packaging facilities and 30 trillion won for next-generation semiconductor R&D over 15 years.

Why the southwest matters

The siting of the hub in the southwest is a significant shift in South Korea’s industrial geography. AP reported that the project is intended to spread investment beyond the capital region, where much of the country’s advanced manufacturing has been concentrated.

Government officials said the region’s renewable-energy profile could be an advantage for the chipmakers. That matters because large fabs are heavily dependent on steady electricity and water supplies, and those infrastructure demands often shape where chip plants can realistically be built.

Chey said the project would need large sites as well as sufficient power, water and skilled labor. Those are not minor details: they are the practical constraints that will determine how quickly the announcement turns into construction.

Samsung’s plan to build in Gwangju gives the southwest portion of the story a clearer anchor, but several details still have to be finalized. The companies have not publicly laid out exact site boundaries, land acquisition steps or a construction schedule.

AI demand and memory chips

The timing of the announcement reflects the strength of AI-related chip demand. Memory chips are a critical input for data centers and other AI infrastructure, and the companies are betting that demand will remain strong enough to justify a buildout of this size.

South Korea already plays an outsized role in the global memory market. The new investment is meant to defend and expand that position at a moment when semiconductor production is becoming even more tied to AI hardware needs.

The government is also presenting the project as part of a broader AI strategy. By linking fabrication, packaging, components, materials and data centers, Seoul is signaling that it wants the chip sector to support more than exports alone.

Open questions

Several practical issues remain unresolved. The biggest near-term questions are how quickly site selection can be completed, what infrastructure upgrades will be required and whether the government will offer incentives or tax support.

Permitting and land acquisition are also likely to matter, especially because the project involves multiple fabs and a large supporting ecosystem. The announcement creates the policy direction, but not yet the implementation timeline.

Labor supply is another constraint. Chey’s comments about skilled workers point to a familiar challenge in advanced semiconductor manufacturing: building the physical plant is only part of the job, while staffing and operating it at scale can take years.

What to watch next

The next milestones will likely come from company follow-up statements and government disclosures on the site plan, infrastructure commitments and spending schedule. Watch for details on where the fabs will be built in Gwangju and the broader southwest.

It will also be important to see how much of the packaging and R&D spending is formally committed versus still planned. That will help clarify how much of the broader 800 trillion-won figure is tied to immediate construction and how much reflects a longer industrial roadmap.

For now, the announcement stands as one of South Korea’s largest industrial commitments in years: a chipmaking hub designed to meet AI demand, deepen the country’s memory-chip leadership and push major investment into a less-developed region.