Korea Nuclear Power AI: Inside Seoul’s Reactor Boom

In August 2025, something remarkable happened in Washington, D.C. The leaders of Amazon Web Services, Korea Hydro & Nuclear Power, Doosan Enerbility, and X-energy sat down and signed a deal. The goal was clear: deploy small modular reactors across the United States to power the AI revolution. South Korea was right at the center of it. For investors watching Korea nuclear power AI developments, that moment was years in the making. It was also the clearest signal yet that South Korea has become one of the most strategically important players in the global energy transition.

In addition, it raised a question very few people had been asking: how did a country with virtually no natural resources become the go-to reactor supplier for the world’s most power-hungry industry?

This is that story.

Why AI’s Power Crisis Is Driving Korea Nuclear Power Demand

AI data center server racks representing power demand

To understand the Korea nuclear power AI connection, you first need to understand the electricity crisis that AI has created. The numbers are staggering.

Data centers consumed an estimated 460 terawatt-hours (TWh) of electricity globally in 2024. According to the International Energy Agency, that figure is projected to more than double — surpassing 1,000 TWh by 2030. For context, 1,000 TWh is roughly equivalent to Japan’s entire annual electricity consumption. Meanwhile, Goldman Sachs Research estimates that meeting all of the projected data center demand growth by 2030 would require 85 to 90 gigawatts of new nuclear capacity globally. To put that into perspective, 60 gigawatts of new US data center demand alone is roughly equal to Italy’s entire peak power consumption.

As a result, the companies building AI infrastructure face a full-blown energy crisis. A 50-megawatt data center used to be considered large. Today, hyperscale facilities consuming 20 times that amount are increasingly common. In Virginia, the world’s largest data center hub, these facilities already consume 26% of the state’s total electricity.

Why Solar and Wind Are Not Enough for AI Workloads

In principle, tech companies love renewable energy. Google, Microsoft, and Amazon have all made sweeping commitments to run on 100% clean power. In practice, however, solar panels don’t generate electricity at night. Wind turbines stop spinning when the air is calm. AI workloads, on the other hand, run 24 hours a day, seven days a week. They cannot afford interruptions.

For instance, training a large language model can consume the equivalent of tens of thousands of homes’ worth of electricity over several consecutive weeks — without pausing. This need for firm, always-on, carbon-free power is precisely why nuclear energy has become the most sought-after energy source in Silicon Valley. Nuclear plants operate with capacity factors of around 90%, meaning they produce power almost continuously. No other clean energy source can match that at scale.

Consequently, every major tech company has begun signing nuclear power agreements. Microsoft committed to 20 years of power from the restarted Three Mile Island reactor. Google signed a deal to purchase electricity from Kairos Power’s future SMR fleet. Amazon partnered with X-energy. And crucially for the Korea nuclear power AI story, Amazon brought South Korea directly into the equation.

Nuclear power plant generating reliable baseload electricity

Korea’s Secret Weapon: 40 Years of Korean Nuclear Energy DNA

Korean Nuclear Manufacturing: Built to Build Reactors

South Korea’s nuclear manufacturing heritage is often overlooked by foreign investors. It is, however, genuinely world-class. The country began operating its first commercial reactor at Kori in 1977. Since then, Korea has spent four decades developing one of the most vertically integrated nuclear supply chains on the planet. It is the same disciplined, long-horizon industrial strategy that turned Korea into a global leader in semiconductors, shipbuilding, and tech startups — and the same competitive DNA explored across Seoulz coverage of Korea’s webtoon industry and other emerging sectors.

Today, South Korea operates 26 nuclear reactors. Together, they supply roughly 30% of the country’s electricity. More importantly, Korea has built the industrial infrastructure to design, manufacture, and operate nuclear plants at a level of precision that very few nations can match. Notably, this depth of capability took decades to accumulate — and it cannot be easily replicated.

In particular, Doosan Enerbility has emerged as what analysts now call the “TSMC of nuclear components.” Just as Taiwan Semiconductor manufactures the chips inside every modern device, Doosan manufactures the heavy forgings, pressure vessels, steam generators, and turbine systems that go inside nuclear reactors. This is the foundation of the Korea nuclear power AI supply chain story. Furthermore, the company spent over 1.1 trillion won developing gas turbine technology. Its order backlog extends well into the 2030s.

Korean heavy industry manufacturing nuclear components

The Korean Nuclear Energy Stock Boom: Numbers That Matter

The financial performance of Korean nuclear stocks has been remarkable. Doosan Enerbility’s operating profit reached 1.018 trillion won in 2024. It climbed to 1.087 trillion won in 2025. Projections place it at 1.052 trillion won in 2026 and 1.518 trillion won in 2027. Industry analysts forecast the company will break the 2 trillion won threshold by 2030. Meanwhile, Korean nuclear stocks as a group outperformed the broader KOSPI index by 15% in 2025.

However, the more significant story is the order pipeline. By 2030, Doosan’s projected new order volume includes 44 trillion won from large-scale nuclear plants, 28 trillion won from SMRs, and 24 trillion won from gas turbines. In other words, the company is positioned at the intersection of every major energy trend happening simultaneously. That diversification is rare. It is also precisely what makes the Korea nuclear power AI investment thesis so compelling.

The Czech Deal: Korea Nuclear Exports Prove Themselves

Beating France at Its Own Game

In June 2025, South Korea’s Korea Hydro & Nuclear Power (KHNP) signed a final contract with Czech utility CEZ. The deal: build two new reactors at the Dukovany nuclear power plant. The value was approximately 26 trillion won — roughly $18 billion. It was South Korea’s first nuclear export contract since the UAE’s Barakah plant in 2009. This success is part of a broader Korean industrial story: just as Korean companies have disrupted global markets in sectors from K-beauty to electric vehicles, Korean nuclear is now disrupting the global energy market.

Significantly, Korea won by beating France’s EDF. This was no minor upset. France has dominated European nuclear construction for decades. EDF has long considered the continent its home turf. Nevertheless, KHNP’s bid reportedly outperformed EDF in every single evaluation category — on price, technology quality, and project execution.

As a result, Daewoo Engineering & Construction was appointed as lead construction manager. Construction is scheduled to begin in 2029. The first unit targets commercial operation by 2036. Additionally, the deal involves over 100 Korean companies employing approximately 14,000 workers. It also requires 60% local Czech procurement — ensuring deep economic ties between the two countries.

The Domino Effect for Korea Nuclear Power AI Markets

The Czech deal’s significance extends well beyond its price tag. For investors tracking Korea nuclear power AI and export trends, it served as a proof-of-concept. It was hard evidence that Korean nuclear technology is commercially competitive on the global stage.

After the European Commission cleared KHNP of subsidy violations following a 14-month investigation, and after EDF’s final legal challenge was dismissed in June 2025, the path was fully clear. Moreover, the Czech success has opened doors to other markets. KHNP is now actively pursuing opportunities in the Philippines, Vietnam, Kazakhstan, Saudi Arabia, the UAE, and several other countries across Africa and Latin America. The global nuclear pipeline — driven by energy security concerns, AI power demand, and decarbonization goals — is estimated to exceed $500 billion by 2030.

Industrial nuclear manufacturing facility

The Westinghouse Shadow: A Deal With Strings Attached

It would be incomplete to discuss Korea nuclear power AI exports without addressing the most significant complication in the story.

In January 2025, KHNP and parent company KEPCO reached a settlement with US energy firm Westinghouse over a long-running IP dispute. Westinghouse had argued that Korea’s APR1400 reactor design was derived from technology it licensed to Korea decades earlier. The settlement resolved the legal uncertainty — but at a significant cost.

Under the 50-year agreement, KHNP is prohibited from bidding for new nuclear projects in North America, the EU (except the Czech Republic), the UK, Japan, and Ukraine. Furthermore, for each reactor KHNP exports, it must pay Westinghouse approximately $175 million in licensing fees. It must also sign a goods and services purchase contract worth around $650 million per unit.

In short, Korea won a historic deal in Europe — and promptly lost access to most of Europe. KHNP has since withdrawn from bids in Poland, Sweden, Slovenia, and the Netherlands.

Korea SMR Strategy: The Silver Lining

However, and this is where the Korea nuclear power AI story takes an optimistic turn, the Westinghouse restrictions primarily apply to the large APR1400 reactor design. They do not constrain Korea’s SMR ambitions in the same way.

South Korea’s National Assembly passed the SMR Special Act in February 2026. It provides a legal and regulatory framework for domestic SMR development and export. Several Korean SMR designs are in active development. KEPCO Engineering & Construction’s BANDI-60 is a 60 MWe marine-capable design. The upgraded SMART100 received its Standard Design Approval in September 2024 and is targeting export markets including Canada and Saudi Arabia. As a result, Korea’s nuclear export future is increasingly SMR-focused — and the country is investing heavily to be ready.

Korea Nuclear Power AI in Practice: Doosan × X-energy × Amazon

Heavy manufacturing factory for nuclear components

The Deal Heard Around the Nuclear World

In December 2025, X-energy and Doosan Enerbility signed a binding reservation agreement. Doosan would manufacture core steel components for 16 of X-energy’s Xe-100 small modular reactors. As part of the deal, Doosan committed to building a brand-new SMR fabrication facility in Changwon, South Korea. The facility will have capacity to produce approximately 20 Xe-100 reactors annually at full production.

To appreciate why this matters, consider X-energy’s total commercial pipeline: 11 gigawatts of Xe-100 reactors under development, equivalent to 144 advanced nuclear units. Amazon Web Services has committed to deploying up to 5 gigawatts of Xe-100 capacity. The first commercial deployment is already underway — four reactors at a Dow Inc. industrial site in Texas, with a construction permit review accepted by the US Nuclear Regulatory Commission in May 2025.

Why Korea? Why Doosan?

In the SMR manufacturing world, Doosan’s capabilities are essentially unmatched outside a handful of Western incumbents. The company has collaborated with X-energy since 2021 on engineering and design for Xe-100 components. In 2023, Doosan made an equity investment in X-energy. By August 2025, Doosan, X-energy, Amazon, and KHNP formalized their relationship through a four-party MOU. It was signed during President Lee Jae-myung’s state visit to the United States. The deal included a commitment to mobilize up to $50 billion in public and private investment for Xe-100 projects by 2039.

This is, in essence, what Korea nuclear power AI integration looks like in practice. A Korean manufacturer builds reactor components. An American company designs the reactors. A tech giant powers its AI infrastructure with the electricity those reactors produce. Meanwhile, Doosan has also signed agreements with TerraPower and NuScale Power. It is now a key supplier to multiple competing SMR developers simultaneously.

The Changwon Factory: Korea’s SMR Industrial Anchor

The new Changwon fabrication facility represents something larger than a single supply contract. It is South Korea’s bet that the global SMR market — currently pre-commercial — will industrialize in the 2030s. Korea intends to be the dominant manufacturer when that happens.

In addition, Doosan’s first major gas turbine export — five units shipped to Elon Musk’s xAI in 2025 — demonstrated that the company can cross-sell from nuclear into adjacent energy infrastructure markets. This diversification significantly reduces risk for investors watching the Korea nuclear power AI sector.

Korea’s Domestic Nuclear Revival

The Political Turnaround

South Korea’s relationship with nuclear energy has been turbulent. Under former President Moon Jae-in, the government pursued an aggressive nuclear phase-out. Reactor projects were canceled. New builds were refused. The policy was reversed under President Yoon Suk-yeol, who championed nuclear power as both an economic and climate strategy. This energy policy reversal is closely connected to the same forces reshaping Korean society more broadly — including the country’s birth rate crisis and long-term economic competitiveness.

Subsequently, the current administration under President Lee Jae-myung has continued to support nuclear energy. The AI-fueled electricity demand pressures reshaping energy policy globally have made that position easier to sustain politically. The passage of the SMR Special Act in February 2026 — stalled for two years prior — signals a durable, cross-party consensus around Korea’s nuclear future.

New Reactors at Home

Domestically, Korea is also planning new reactor construction. The government has approved plans for additional APR1400 reactors. Furthermore, the SMART100 design received its upgraded Standard Design Approval in September 2024. It is being prepared for licensing applications in Canada and commercialization in Saudi Arabia, with a target of first commercial deployment by 2029 to 2030.

What Korea Nuclear Power AI Means for Korea’s Economy

A New Export Engine

For South Korea, nuclear power represents something the country has been searching for: a new high-technology export industry. Korea wants to complement semiconductors, shipbuilding, and electric vehicles with a sector where it holds genuine competitive advantages. The Czech deal alone is valued at approximately $18 billion. The broader KHNP pipeline — across approved markets including the Philippines, Vietnam, Saudi Arabia, and UAE — could represent hundreds of billions of dollars in contract value over the next two decades. Foreign professionals working in Korea are increasingly watching these macro shifts; if you are thinking about relocating, the Korea Digital Nomad Visa is worth exploring.

In addition, the SMR supply chain opportunity is potentially even larger. As a supplier to multiple Western SMR developers, Doosan is positioned to earn component manufacturing revenue regardless of which reactor design ultimately wins the market. This strategic position is analogous to TSMC’s role in semiconductors. And it is why the Korea nuclear power AI narrative is, at its core, an industrial supply chain story just as much as an energy story.

Korean Nuclear Energy Stocks to Watch

For foreign investors looking at Korea’s nuclear sector, several names stand out.

Doosan Enerbility (034020.KS) is the most direct play on global nuclear manufacturing. Its order backlog spans large reactors, SMRs, and gas turbines — providing diversified exposure to the entire nuclear supply chain.

KEPCO (015760.KS) is the state-owned utility that controls KHNP. While it carries some regulatory and political risk, any successful overseas nuclear contract flows through KEPCO’s consolidated financials.

Hyundai Engineering & Construction and Daewoo E&C are the construction arms participating in the Czech project and other overseas builds. As the Dukovany project moves toward its 2029 groundbreaking, both companies stand to benefit significantly.

KEPCO Engineering & Construction develops reactor designs including the BANDI-60 SMR. As its designs move through international licensing processes, the company’s valuation could re-rate substantially.

The Risks: Korea Nuclear Power AI Investment Concerns

No investment thesis is complete without an honest assessment of risks — and the Korea nuclear power AI investment story has several worth examining carefully.

The Westinghouse constraint remains a significant limiter. Being locked out of North America, most of Europe, Japan, and the UK dramatically reduces the addressable market for KHNP’s large reactor exports. The 50-year terms of the agreement mean this constraint is not going away soon.

SMR technology risk is real. The IEA notes that SMRs will only begin meaningfully contributing to data center power after 2030, as the first units come online. Several SMR developers have faced delays, cost overruns, or cancellation — NuScale’s flagship US project was cancelled in 2023. The technology is not yet proven at commercial scale.

Political risk in Korea cannot be ignored. The nuclear phase-out policies of the Moon administration demonstrated how quickly political winds can shift. Nevertheless, the passage of the SMR Special Act and continued bipartisan support for nuclear exports suggest the current trajectory is more durable than before.

Execution risk on the Czech project is perhaps the most immediate concern. Any cost overruns or delays in Dukovany would damage Korea’s nuclear export credibility significantly. KHNP’s last major export — Barakah in the UAE — was completed on time and within budget. The bar for the Czech project is equally high.

The Bottom Line

Amazon needed power. Google needed power. Microsoft needed power. And the world needed someone who could actually build reactors on time and on budget.

South Korea, it turns out, has been quietly preparing for this moment for 40 years.

The combination of battle-tested manufacturing infrastructure, competitive pricing, proven export credentials from the UAE, and a rapidly maturing SMR capability positions Korea as one of the most consequential players in the global energy transition. For investors, the Korea nuclear power AI sector offers a rare combination: exposure to both the AI infrastructure boom and the clean energy transition, through companies with real order books and real manufacturing capacity.

Moreover, the Doosan-X-energy-Amazon triangle represents something genuinely new. It is a direct link between South Korean heavy industry and the infrastructure layer of the AI economy. As a result, when the next data center goes live somewhere in Virginia or Texas or Washington state, there is a decent chance that the reactor powering it was built, at least in part, in Changwon.

That is not a story many people outside Korea know yet. However, it is one that is very much worth knowing — and investing in.