South Korea's Chip Giants Threaten National Power Grid Amid Energy Crisis
South Korea's dominant chip giants, Samsung and SK Hynix, are straining the national power grid amid surging AI-driven demand and frozen state electricity prices, threatening the country's semiconductor manufacturing dominance.
The South Korean stock exchange is notably centralized, with just two companies accounting for about half of the KOSPI flagship index. Both are major chip manufacturers, meaning any disruption in the sector either sends the entire Korean stock market soaring or crashes it. Recently, however, these two giants have been destabilizing not only the capital market but also the local power grid. A combination of record profits today and future uncertainty, paired with political decision-making and chronic debt accumulation, is plunging South Korea into an energy crisis that threatens its status as a global hub for memory chip production.
The AI revolution has propelled semiconductor companies worldwide to new heights, led by two South Korean tech titans: Samsung and SK Hynix. These family-owned conglomerates dominate a significant portion of South Korea's economy and exports. Samsung, the country's largest corporation and a producer of a vast array of electronics, is controlled by the Lee family, with only minority shares actually traded on the exchange. SK Hynix, the world's second-largest chip maker and Nvidia's primary supplier, is controlled by the Chey family. Together, they hold roughly 65% of the global memory chip market.
The earnings of both companies are breaking records: at current exchange rates, Samsung brought in $125 billion in a single quarter, of which $93 billion came exclusively from its chip division. SK Hynix generated $58 billion in the same quarter. The immense demand for computing power requires an expansion of manufacturing capacity, yet scaling up fabrication plants demands not only massive capital investments years in advance but also a dramatic increase in electricity consumption.
According to South Korea's 11th Basic Plan for Electricity Supply, the state-run Korea Electric Power Corporation (KEPCO) will be required to build infrastructure worth approximately $53 billion. The problem is that it simply does not have the money. This shortfall stems from the fact that electricity prices in South Korea are ultimately controlled by the Minister of Energy, and the decision to raise tariffs to fund new infrastructure is a political one that the government consistently avoids making. Consequently, electricity prices have remained frozen since October 2024, even as energy costs surge due to conflicts in Russia and the Strait of Hormuz. To finance its electricity needs, the state has been forced to take on debt, pushing KEPCO's total debt to over $90 billion.
To resolve the grid crisis, the utility company approached the chipmakers with an unusual proposal: they would pay for their electricity bills five years in advance, receiving interest over that period, which would allow KEPCO to finance the grid upgrades largely designed for them. The companies considered the offer and rejected it. Industry experts note that the chipmakers fear a future drop in demand and are reluctant to burden their balance sheets, especially given that the offered interest rate stood at around 3%, falling below US Treasury bonds. Consequently, South Korea's tech sector faces a dilemma: power shortages could delay the opening of new plants or encourage firms to establish production facilities abroad, such as SK Hynix's $4.5 billion investment in Indiana. To preserve South Korea's status as a semiconductor powerhouse, the government may ultimately have to finance the grid expansion itself.
