South Korea Plans KRW 300 Trillion Investment to Build Second Chip Cluster, Cutting Construction Timeline by Over a Decade
Miles Bennett
Seoul is negotiating with Samsung and SK Hynix to build a second semiconductor cluster outside the capital region, with planned investment exceeding ₩300 trillion (~$230 billion) and construction timelines at the existing Yongin site compressed by more than ten years — AI chip demand is rewriting Korea's expansion playbook.
What exactly is the second cluster?
The site shortlist points to Honam — South Korea's southwest (Jeolla Province) — creating a twin-hub layout alongside the existing Yongin cluster.
Samsung and SK Hynix have completed water, power, and transport assessments at five candidate sites, including Gwangju's Buk-gu district and the Jangseong Advanced Industrial Complex Phase 3.
This means → it is not a relocation. It is an entirely new build on top of Yongin. Presidential policy chief Kim Yong-beom stated explicitly: "This is absolutely not about canceling Yongin projects and moving them elsewhere."
Why compress the timeline by a decade?
SK Hynix is pulling its fourth Yongin fab forward from 2044 to 2034. Samsung's projects originally due by 2048 are now targeted for 2034–2035.
Kim said AI-driven chip demand is showing "explosive growth" and the two companies must move at "extraordinary speed."
In plain terms = what was a 20-year slow build is now a 10-year sprint, because AI's appetite for computing chips is outpacing every prior forecast.
How big is the investment — and where does the money come from?
Combined investment is estimated at ₩300–400 trillion. Samsung alone may account for over ₩200 trillion; SK Hynix's share could be even larger.
Yongin already has a massive base: Samsung has planned six fabs at Yongin's Cheoin district at ₩360 trillion; the broader Yongin cluster's long-term blueprint totals ₩960 trillion.
This means → the second cluster is incremental to Yongin. Stacked together, South Korea's total semiconductor investment enters an astronomical scale measured in quadrillions of won.
How far along is the government-industry coordination?
SK Group chairman Chey Tae-won visited the presidential office on June 19. Samsung chairman Lee Jae-yong is set to meet President Lee Jae-myung on June 25. Executives from both firms will refine the plan with the president on June 29.
Industry sources expect the investment agreement to be formally signed at the Southwest Regional Development Forum in Gwangju on June 30.
Samsung's Pyeongtaek P5 Fab 2 is also accelerating — groundwork is running roughly six months ahead of earlier expectations, targeting 2029 production start with monthly capacity of 200,000–300,000 twelve-inch wafers.
Can Honam actually support a project this size?
The advantages are clear: relatively ample land, water, and power infrastructure. Gwangju already hosts a back-end packaging ecosystem anchored by Amkor Technology.
The gaps are equally real: thin senior-talent pools, weak supplier networks for materials, components, and equipment, and a high bar for front-end wafer fabrication.
This reflects the core tension in Korea's semiconductor expansion — capital and land can be mobilized quickly, but people and supply-chain depth take time to catch up. Kim himself acknowledged: "The monster of electricity demand could devour us" — supporting infrastructure must keep pace.
Content is for reference only, not financial advice.