Introduction
Samsung Electronics and SK Hynix have rejected a proposal from Korea Electric Power Corp, known as KEPCO, that would have required the two chipmakers to prepay a combined 25 trillion won, roughly $18.7 billion, in future electricity charges to help finance power grid construction for new semiconductor manufacturing clusters. The rejection, confirmed through a document submitted to a South Korean lawmaker and reported on September 14, 2026, marks a setback for the state utility's efforts to fund infrastructure fast enough to keep pace with the country's chip industry expansion.
What KEPCO Proposed
Under the plan, first pitched to the companies on July 9, 2026, KEPCO sought to collect roughly five years' worth of electricity payments upfront, with Samsung asked to contribute approximately 20 trillion won and SK Hynix around 5 trillion won. The utility intended to use the funds to accelerate construction of transmission lines and transformer substations needed to power new semiconductor manufacturing sites, including major planned clusters in Yongin and the southwestern Honam region.
Key Facts
- KEPCO's proposal sought a combined 25 trillion won ($18.7 billion) prepayment from Samsung and SK Hynix.
- Samsung was asked to contribute roughly 20 trillion won; SK Hynix approximately 5 trillion won.
- Samsung formalised its rejection around September 9, 2026; SK Hynix issued a similar rejection without a confirmed exact date.
- KEPCO offered to pay interest at a mid-3% annual rate on the prepaid amount, deducted from future bills.
- Samsung shares fell 3.7% and SK Hynix shares fell 5.3% in Seoul trading following the news.
Why the Chipmakers Said No
Both companies cited uncertainty over how long the current semiconductor and AI-driven demand upcycle will last as their primary reason for declining. Committing tens of trillions of won toward infrastructure spanning a five-year horizon carries significant financial risk if chip demand were to soften before that period concludes, a concern serious enough that neither company was willing to accept KEPCO's proposed terms despite the offered interest rate.
Table: Proposed Contribution Breakdown
| Company | Proposed Prepayment |
|---|---|
| Samsung Electronics | ~20 trillion won (~$15 billion) |
| SK Hynix | ~5 trillion won (~$3.7 billion) |
| Combined Total | ~25 trillion won (~$18.7 billion) |
KEPCO's Financial Position
The utility's push for prepayment comes as KEPCO carries substantial existing liabilities, reported at 211 trillion won as of the end of June 2026, alongside a bond issuance waiver nearing expiry. Facing constrained conventional financing options, KEPCO had positioned the prepayment scheme as a mechanism to secure funding for urgently needed grid infrastructure without further increasing its own debt load, a structure that effectively shifted financing risk onto the chipmakers rather than the utility itself.
A Regional Pattern of Strained Power Infrastructure
South Korea's grid challenges reflect a broader pattern seen across parts of Asia and beyond, where utilities are struggling to keep pace with surging electricity demand from semiconductor and AI-driven data centre expansion. KEPCO's now-rejected proposal represented an attempt to work around this mismatch by shifting financing risk directly onto the industries driving demand growth, an approach that appears to have proven too risky for the chipmakers themselves to accept under the terms offered.
Expert Insight
Energy sector analysts note that KEPCO now faces a genuine challenge in identifying alternative funding mechanisms for the grid infrastructure needed to support South Korea's semiconductor cluster ambitions. With the state utility's conventional balance sheet already stretched, and the chipmakers unwilling to accept prepayment risk, the rejection could ultimately delay some of the grid capacity expansion needed to support planned chip manufacturing growth, unless a revised financing structure emerges that better balances risk between the utility and its industrial customers.
Key Takeaways
- Samsung and SK Hynix rejected KEPCO's proposal to prepay 25 trillion won in electricity charges.
- The companies cited uncertainty over whether chip demand would sustain the full five-year prepayment period.
- KEPCO faces a financing gap for grid infrastructure needed to support new semiconductor clusters.
- Samsung and SK Hynix shares both declined following news of the rejection.
FAQ
How much did KEPCO ask Samsung and SK Hynix to prepay?
KEPCO sought a combined 25 trillion won, approximately $18.7 billion, split roughly 20 trillion won for Samsung and 5 trillion won for SK Hynix.
Why did the companies reject the proposal?
Both cited uncertainty over whether current semiconductor and AI-driven demand would last the full five-year period the prepayment plan was based on.
What was KEPCO planning to use the funds for?
The utility intended to use the prepayments to accelerate construction of transmission lines and transformer substations for new semiconductor manufacturing clusters, including sites in Yongin and the Honam region.
Conclusion
The rejection leaves KEPCO searching for alternative ways to fund critical grid infrastructure at a moment when South Korea's semiconductor ambitions depend heavily on reliable, expanded power capacity. With neither the utility's balance sheet nor the chipmakers' risk appetite able to absorb the proposed financing structure, a workable long-term solution to Korea's chip-cluster power needs remains unresolved.
