• 3 min read
South Korea’s $540bn chip hub lacks power and water
Seoul wants the Honam semiconductor complex running by 2030, but the southwest region still lacks the electricity and water fabs need.
Image: TNW
South Korea is pushing an 800 trillion won ($540bn) semiconductor complex in the country’s rural southwest, with a target to have the Honam hub operating by the end of 2030. The problem is basic but severe: the region does not yet have enough electricity or water to support it.
Backed by President Lee Jae Myung, the project is a flagship part of a broader national push worth more than $880bn across chips, AI, and data centres. The planned site is a Gwangju military airport area covering about 8.3 million square metres, chosen for its flat land, transport links, and existing utilities. Samsung Electronics, SK Hynix, and Amkor Technology Korea are central to the effort.
A Reuters analysis found that the hub’s four planned fabs could eventually consume 70% to 80% of the annual electricity used by South Korea’s southwestern provinces.
Recommended reading
Judge Pauses Paramount’s $111B WBD Deal
“A huge amount of new power demand is coming into a region that previously had little, and that’s the core of the problem.”
Power and water constraints
The comparison hanging over the project is Yongin, the giant chip cluster south of Seoul. At full capacity, Yongin is expected to need 15 to 16 GW — close to a quarter of the capital region’s power demand, and roughly the output of ten large nuclear reactors — while local supply today is still below 2 GW.
Water may be even tighter. Advanced fabs need huge volumes of ultrapure water for wafer cleaning, and the Honam cluster would require about 650,000 tonnes a day. That is more than Gwangju currently supplies to all residents.
To close that gap, the government has proposed raising Dongbok Dam to secure another 250,000 tonnes per day. The move could affect an estimated 1,500 to 1,600 households.
“This is the same as dam construction.”
The wider Yeongsan river basin is projected to face an annual shortfall of about 219 million cubic metres by 2030. The lengths chipmakers may need to go are already visible elsewhere: SK Hynix’s Yongin fabs draw around 265,000 tonnes a day piped in from a weir in another city.
Nuclear debate and renewable targets
Meeting the region’s power needs could require more nuclear capacity and longer operating lives for older reactors. That has already triggered opposition near the Yeonggwang plant on the southwest coast.
“To now talk about new construction, on top of extending the lifespan of ageing reactors, is nothing less than a declaration that Yeonggwang will become a nuclear testing ground.”
Officials have acknowledged the scale of the challenge. Kim Yong-beom, policy chief in the presidential office, warned that “the monster called electricity will devour us” if supply fails to match demand.
The government is also counting on renewables, aiming to raise Honam’s clean power capacity from about 7.5 GW to as much as 37.7 GW by 2035, including 11 GW of offshore wind off Sinan county. But timing is the central risk. In Yongin, SK Hynix moved one fab forward to 2033, while the water pipeline for it is not expected until 2034. For Honam, the next power plan and the approvals for dams and grid upgrades will determine whether the southwest becomes Korea’s next chip base — or an example of industrial policy outrunning infrastructure.
Enterprise Editor
Marcus follows the money. He covers enterprise software, cloud architecture, and the tectonic shifts in Big Tech strategy. He translates dense earnings calls and complex M&A activity into actionable insights about where the industry is actually heading. If a tech giant makes a silent pivot, Marcus is usually the first to notice.
via TNW
