Samsung Electronics and SK hynix have announced plans to build two next-generation fabs each in the Honam region, investing 400 trillion won apiece in what President Lee Jae Myung's government has framed as both an answer to surging AI memory demand and a correction to decades of lopsided regional development.
Lee vowed to personally oversee the project through a dedicated office within the presidential administration.
The initiative reflects Korea's strategic pivot south as the capital region runs out of land to support the country's AI-driven industrial expansion.
Nvidia Chief Executive Jensen Huang, during his visit to Seoul in June, described the Saemangeum reclamation zone on Korea's southwest coast as the country's future "AI Valley" and said he would welcome building an Nvidia data center there, joining Hyundai Motor Group's 9 trillion won plan for an AI data center and robotics cluster.
Yet the region's headline advantages — cheap land, surplus electricity and abundant water — all come with caveats that echo the very bottlenecks that delayed the Yongin semiconductor cluster.
Water on paper, scarcity in the models
Another 300,000 tons of recycled wastewater from Gwangju would serve as emergency backup.
Climate Minister Kim Sung-hwan said the government would "supply the 6.3 gigawatts of power and 650,000 tons of water the southwestern fabs need without disruption, and prepare additional water and electricity in advance."
The ministry's own planning documents, however, urge caution.
Its basin management plan for the Yeongsan and Seomjin rivers projects annual shortages of roughly 71 million tons and 50 million tons, respectively, of household and industrial water by 2030 under a once-in-50-years drought scenario, with deficits widening further as climate change intensifies.
Some experts estimate total demand could approach one million tons a day once all four fabs are operating around 2030 — a figure Kim insists can ultimately be met by the region's seven dams.
History suggests the harder constraint is not engineering capacity but local consent.
SK hynix's Yongin cluster saw its water supply delayed by roughly 18 months after Yeoju, which controls the intake point, withheld permits until compensation terms were agreed. The project ultimately took six years to move from announcement to groundbreaking.
Honam's plan likewise requires changes to agricultural water allocations and hydropower operations, both of which will require agreement from farmers and local communities.
Plenty of electrons, not enough wires
Electricity generation is the region's strongest advantage.
South Jeolla's power self-sufficiency reached 215 percent in 2025, according to Korea Electric Power Corporation, with the province estimating an annual surplus of about 38 terawatt-hours. The Hanbit nuclear complex and planned offshore wind farms underpin that surplus.
The grid, however, remains the bottleneck.
Building new transmission lines faces the same political resistance that once slowed Samsung's Pyeongtaek expansion.
The Sinjangseong substation in Jangseong County, a key link connecting offshore wind farms to the planned fabs, is scheduled for completion in September 2027 after years of local opposition. Meanwhile, the county council has formally opposed a proposed 345-kilovolt transmission line running through the county toward Jeongeup.
The government's solution is an "energy highway" — accelerating transmission corridors linking Honam to the capital region, advancing key projects to December 2030, while adding west coast undersea high-voltage direct-current cables and introducing a new renewable-energy bidding system in Honam this year.
Industry officials nevertheless say reliable 24-hour electricity will still require LNG backup generation and large-scale battery storage, much as planned for Yongin — an approach that has already drawn environmental opposition elsewhere.
"The 215 percent self-sufficiency figure should be interpreted cautiously," said Park Hae-kyun, professor of energy engineering at Kyungpook National University.
"Renewable output fluctuates with weather conditions, so maintaining stable baseload power around the clock will require a broader generation portfolio and secure dispatchable sources."
In one sense, the fabs also solve the grid's problem. Kim noted that electricity generated in Honam could finally be consumed in Honam instead of being transmitted north.
The people problem
The scarcest resource may ultimately be engineers.
The Korea Semiconductor Industry Association projects a shortage of roughly 54,000 semiconductor workers by 2031, while most experienced talent remains concentrated in the capital-area clusters of Hwaseong, Pyeongtaek and Icheon.
Labor Minister Kim Young-hoon has described skilled workers as one of the project's most important resources, pledging expanded training centers and polytechnic programs across the region.
Supporters argue the investment could help absorb unemployed local youth, with Gwangju and North Jeolla recording youth unemployment rates above the national average last year.
Yet many of the engineers capable of operating advanced fabs will still need to relocate from the Seoul metropolitan area.
Korea's recent experience with government-led relocation offers a cautionary precedent.
HMM's headquarters relocation to Busan triggered months of union resistance and strike threats over concerns of large-scale resignations, passing a shareholder vote only after management agreed to a phased relocation without forced transfers.
The Honam semiconductor project is likewise government-driven. Whether thousands of engineers and hundreds of suppliers are willing to follow the fabs south — rather than view the assignment as exile — remains an unanswered question.
Meanwhile, the region's demographic base continues to shrink.
Gwangju and South Jeolla, which this month launched an integrated special city with a combined population of about 3.17 million, recorded a youth employment rate of 39.3 percent, compared with the national average of 44.4 percent. Reports indicate the city lost roughly 8,700 residents aged 19 to 39 last year alone, while Gwangju's youth population has fallen about 2.4 percentage points over the past five years.
The newly established Jeonnam-Gwangju Integrated Special City aims to begin construction in the first half of next year and complete its first fab within four years.
Yongin, by comparison, required six years simply to begin excavation.
Whether Honam can compress that timeline — while securing water rights, expanding the grid and persuading engineers to relocate — will determine whether the southwest's chip dream solidifies into silicon or remains another ambitious blueprint.
Copyright ⓒ Aju Press All rights reserved.