SK Hyper Puts Korea’s First 5GW at $350B, Seeks Investors

SK Hyper Co., the data center arm of South Korea’s SK Group, is in talks with big tech firms and financial investors to fund a plan to build 15 gigawatts of data center capacity in South Korea by 2035, Bloomberg reported on 23 October 2026. The first 5-gigawatt phase alone would require $350 billion including equipment, Chief Executive Officer Chung Suk-geun told Bloomberg Television. By our arithmetic, that is about $70 billion per gigawatt.

The figure is higher than the one SK Telecom, SK Hyper’s parent, published in July. Its release said a typical 1GW-class AI data center may require approximately 70 trillion won, which the Korea Times converted to $45.8 billion. Five of those would be about 350 trillion won, or about $229 billion at that conversion, by our arithmetic. Neither source says whether the two estimates cover the same costs.

Business Pill · FINANCIAL CONDITIONS

A short Business Engineer explainer on financial conditions: how the cost and availability of credit and capital change. It teaches the general idea only and says nothing about any company or deal in this piece.

What SK Hyper’s CEO Said

• The talks. SK Hyper “is in talks with big tech firms and financial investors to secure funding for an envisioned $350 billion data center buildout, joining a global rush to roll out AI infrastructure despite concerns about future demand,” Bloomberg reported.
• The plan. The company has begun discussions with potential partners to help finance a plan to build 15 gigawatts of data center capacity in South Korea by 2035, Chung said, according to Bloomberg.
• The timing. The company is targeting to complete its first round of external financing by the end of this year or early 2027, with further fundraising over the following three to four years, according to GuruFocus’s account of the interview.
• The approach. Chung said SK intends to share the overall costs with data center tenants and external investors, and that SK Hyper will not commit all required funds at once but will adjust investment timelines to actual demand, GuruFocus reported.

What SK Telecom Has Said Itself

SK Telecom announced the 15-gigawatt plan on 5 July. Its release said it would start with the AI data center under construction in Ulsan and build a cluster of over 2 gigawatts in the southeastern Gyeongsang region. It would add 1 gigawatt in the southwestern Jeolla region, for a domestic total of 5 gigawatts opened in stages starting in 2029. It said costs are expected to be financed through the company’s own investment, strategic partner investment, long-term customer contracts and project financing.

On 23 July, SK Telecom said its board had approved the establishment of SK Hyper, which it will own 100%, with an investment of 750 billion won by 2030. SK Hyper is responsible for securing sites, constructing and operating substations, acquiring customers, and commercializing the business. “SK Hyper’s role is to turn SK Group’s blueprint for Asia’s AI Infrastructure Hub into reality,” Chung said in that release.

The 5 July release lists SK Group’s cooperation with Amazon Web Services on cloud infrastructure, announced in June 2025, and plans with Nvidia for an AI Factory, which SK Telecom plans to begin operating in 2027.

The Number: What One Gigawatt Costs

The CEO’s figure can be set beside other per-gigawatt estimates we have read. They measure different things.

Four estimates with different scopes, dates and currencies. They are not a like-for-like comparison, and the gap between them is not explained by any of the sources.

By our arithmetic, the 750 billion won SK Telecom committed to SK Hyper is about 0.14% of the $350 billion first phase, converting at the Korea Times’ July rate. The securities industry views the 750 billion won as priming money to secure the initial business base rather than funding to build the capacity, the Seoul Economic Daily reported, and expects individual projects to be funded through separate project companies with financial and strategic investors.

Connecting the Coverage

The talks surfaced on the same day another SK Group company stepped back from the capital markets. Our Solidigm piece reported that SK hynix said in a 23 October filing that Solidigm had stopped reviewing both a pre-IPO round and an IPO, citing capital market conditions; Bloomberg had put the potential listing at $10 billion. What’s new here: SK Group’s data center arm is seeking outside money at a far larger scale.

Our Kospi piece reported that SK hynix fell 4.23% on 20 October, when the Kospi dropped 3.73%, according to Yonhap. Our Elice piece followed the Korean AI cloud company from a 32.04% first-day fall to a 22 October close of 94,300 won, back above its IPO price. Our AI debt piece reported, in a 23 October update, that global corporate bond yield premiums reached up to 129 basis points, their widest since May 2025, on a Bloomberg index.

Our Stargate UAE piece reported that the 1-gigawatt first phase of the UAE-US AI Campus in Abu Dhabi is a $30 billion project, according to Reuters. Our data-centre map lists Meta’s Hyperion campus in Louisiana as scaling toward 5 gigawatts, per Meta, the same capacity as SK’s first phase.

The Structural Read

As we read it, the structure SK Telecom described in July puts little of the parent’s own money in: 750 billion won committed to SK Hyper by 2030, with costs expected to be financed through strategic partners, long-term customer contracts and project financing as well as its own investment.

As we read it, the CEO’s figure and SK Telecom’s July estimate of about 70 trillion won per gigawatt differ, and the sources do not say whether they cover the same costs. SK Telecom’s July release said the cost is driven by computing infrastructure and rising memory prices.

As we read it, the timing GuruFocus reports, a first external round by the end of this year or early 2027 and the rest over three to four years, means the commitments are staged: Chung said SK Hyper will adjust investment timelines to actual demand.

Three Implications

FOR SK TELECOM Its July release named its own investment, strategic partners, long-term customer contracts and project financing as funding sources; the Seoul Economic Daily reported that analysts expect project companies with outside investors.

FOR PROSPECTIVE PARTNERS Bloomberg reports talks with big tech firms and financial investors; no partner, tenant or amount has been named.

FOR THE AI BUILD-OUT At about $70 billion per gigawatt by our arithmetic, the CEO’s figure is above the other per-gigawatt estimates in this piece’s table, which cover different scopes.

The Business Engineer Lens

This story maps onto the Business Engineer framework The AI Memory Chokepoint.

The framework’s thesis: “the binding constraint on AI scaling has quietly shifted to High Bandwidth Memory (HBM)”.

As we read it, SK Telecom’s own July release ties the cost of a gigawatt to rising memory prices and names Korea’s high-bandwidth memory as a reason to build there. The framework was published in December 2025 and does not discuss SK Hyper.

What Is Not Established

We read only the opening of Bloomberg’s article; the timing and cost-sharing points come from GuruFocus’s account of the interview, and we did not watch the Bloomberg Television interview. No partner, investor, tenant or amount committed has been named. SK Telecom’s July figure is in won, and the dollar conversions here use the Korea Times’ July rate; the $70 billion and $229 billion figures are our arithmetic. Nothing in the sources explains why the CEO’s figure is higher than SK Telecom’s July estimate. Nothing here is investment advice.

The Bottom Line

SK Hyper’s CEO told Bloomberg Television that the first 5 gigawatts of SK’s 15-gigawatt Korean plan would require $350 billion including equipment, about $70 billion per gigawatt by our arithmetic, and Bloomberg reported that the company is in talks with big tech firms and financial investors. SK Telecom’s own July estimate was about 70 trillion won per gigawatt. The sources do not reconcile the two figures.