Czech Nuclear Contract Tests Korea’s Balance Between Profit and Sovereignty

In January 2025, Korea Hydro & Nuclear Power (KHNP) secured a contract to construct an APR1400 reactor at the Dukovany site in the Czech Republic. Valued at nearly $19 billion, it was celebrated in Seoul as both the largest nuclear export in Korea’s history and its first successful entry into the European nuclear market. The achievement was framed not merely as a commercial victory but as confirmation that Korean nuclear technology had matured into a global brand.

Yet beneath the triumph lay a far more complex arrangement. The contract became possible only after a last-minute settlement with Westinghouse, the U.S. nuclear vendor that had sought to block Korea’s overseas bids.

That settlement, while opening the door to Prague, simultaneously imposed long-term obligations: KHNP must pay royalties on exports of the APR1400 and procure certain key components from American suppliers. In short, Korea’s breakthrough in Europe carried with it a confirmation of U.S. leverage over its flagship technology.

The Czech Deal and Its Symbolism

The Dukovany expansion is pivotal for the Czech Republic’s long-term energy strategy. Prague has pledged to eliminate coal by the 2030s, and nuclear power is central to its replacement strategy. The tender was therefore framed not only as an industrial project but as an investment in national security and NATO-aligned energy stability.

KHNP’s selection came at the end of a highly competitive process. Russia and China had been excluded early on for security reasons, leaving France’s EDF as the principal rival. Czech authorities emphasized operating record, financing capability, and resilience of supply chains. Korea benefited from the track record of the Barakah project in the United Arab Emirates, where four APR1400 units were delivered and connected to the grid—a rare example of timely completion in the nuclear sector.

Construction at Dukovany is slated to begin late this decade, with trial operation in 2036. A major provision of the contract ensures local industrial participation: Czech suppliers are expected to provide equipment, engineering services, and long-term maintenance capacity. For Seoul, this victory was interpreted as both an industrial milestone and a diplomatic alignment with Central Europe’s energy priorities. But the very terms of the agreement also revealed how deeply nuclear commerce is entangled with geopolitical filters and intellectual property claims.

Westinghouse v. KHNP: From Courtroom to Settlement

The seeds of conflict were planted in October 2022, when Westinghouse sued KHNP in a U.S. federal court. The American company argued that the APR1400 was derivative of the System 80+, a design developed by Combustion Engineering and later acquired by Westinghouse. Under the Atomic Energy Act, Westinghouse contended, Korea could not export the reactor without U.S. authorization.

The lawsuit reached beyond technology. By tying the APR1400 to U.S. export controls, Westinghouse cast a shadow over every overseas tender in which KHNP participated. For Korea, which had promoted the APR1400 as its flagship export model—already proven in the UAE and under review in Europe—the risk was existential: protracted litigation could delay projects for years and deter potential clients.

The standoff ended in January 2025, just days before Prague confirmed KHNP as the Dukovany winner. The settlement’s terms remain confidential, but officials familiar with the matter describe its contours. KHNP must pay royalties on foreign sales of the APR1400 and procure specific technologies—particularly digital reactor control systems and parts of the nuclear fuel cycle—from designated U.S. vendors. Industry observers interpret this as a structural constraint, one that effectively locks Korean exports into an American framework for decades.

Neither company disclosed the royalty rate, leaving the financial weight of the arrangement opaque. Analysts note, however, that even a one-percent fee on a $20 billion contract could generate hundreds of millions of dollars, particularly if repeated across multiple projects. Obligatory sourcing of U.S. components further constrains KHNP’s procurement options and could raise costs. The legal battle may have ended, but the terms underscore that the APR1400 cannot escape American jurisdiction entirely.

For Westinghouse, the outcome was more than a legal victory. After filing for bankruptcy in 2017 following the failed V.C. Summer project, the company had struggled to restore credibility in the global market. The royalties and sourcing guarantees embedded in the KHNP settlement effectively secure it a revenue stream for decades, reviving a vendor that was once on the verge of collapse.

Technology and Intellectual Property: The Roots of the Dispute

The roots of this conflict stretch back to the 1990s, when South Korea embarked on its first serious effort to build an indigenous nuclear program. In 1992, Seoul signed a transfer agreement with Combustion Engineering of the United States to acquire the System 80+ design.

That agreement extended far beyond blueprints: it included access to physics codes, safety methodologies, and on-the-ground training for Korean engineers. The design became the basis of the Korean Standard Nuclear Plant program, which produced a generation of reactors at Yonggwang and Ulchin and gave Korea its first sustained exposure to advanced reactor construction.

When Westinghouse later purchased Combustion Engineering’s nuclear assets, it inherited not only the intellectual property but also the contractual restrictions governing derivative use. By that time, however, Korean engineers were already working toward the APR1400.

Over more than a decade, they expanded generating capacity, introduced digital instrumentation in place of analog systems, and strengthened safety margins for seismic and containment risks. Korean regulators, led by the Korea Institute of Nuclear Safety (KINS), treated the resulting model as an entirely new family of designs.

KHNP has long insisted that the APR1400 stands on its own. Evidence lies in the milestones achieved under Korean leadership: U.S. Nuclear Regulatory Commission approval in 2019, deployment in the UAE, and recognition by international regulators as an independently licensed design. From Seoul’s perspective, these markers prove that Korea transformed an imported framework into a reactor of its own.

Westinghouse has never accepted that interpretation. It argues that the underlying physics models, licensing methods, and reactor architecture remain bound by U.S. law. By this logic, no amount of adaptation severs the intellectual property thread that links the APR1400 back to System 80+.

What emerges, then, is a clash of definitions: Koreans see innovation; Americans see continuity. The 2025 settlement sidestepped this legal debate without resolving it—allowing Korea to sell abroad, but only under conditions that preserve Westinghouse’s stake.

Political Responsibility and Strategic Fallout

The settlement between KHNP and Westinghouse has grown into far more than a licensing dispute. Struck under the Yoon Suk-yeol administration, it has been criticized as a long-term concession that effectively surrenders part of Korea’s industrial sovereignty for decades to come.

The terms obligate KHNP to pay royalties on every export of the APR1400 and to source critical components from American suppliers, limiting procurement flexibility. This means that Korea assumes the engineering, financial, and political risks of reactor construction while Westinghouse secures steady revenue insulated from local opposition, regulatory delays, or cost overruns.

Critics emphasize that this imbalance is not accidental: Westinghouse, weakened by past mismanagement and bankruptcy, has effectively been propped up by Korean exports. What looks in Seoul like a concession on sovereignty is seen in Pittsburgh as the very lifeline that has restored the company’s relevance in the nuclear sector.

The Yoon government defended the deal as an unavoidable choice. Without U.S. consent, the Dukovany contract would likely have collapsed, excluding Korea from European tenders where American influence permeates safety certification and fuel supply chains. In this framing, royalties and supply obligations are not giveaways but the price of admission into Western markets—a calculated cost of credibility.

Yet the opaque manner in which the deal was reached provoked backlash at home. Parliament and the public learned of the financial obligations only after the agreement was concluded. Critics in the opposition called it a “burden lasting half a century,” arguing that by codifying royalties and procurement requirements, Korea institutionalized dependency. The Czech contract may look like a commercial victory in the short run, but in the long run it risks undermining the very claim of technological independence that the APR1400 was built to symbolize.

With the inauguration of the Lee Jae-myung administration, the debate has entered a new phase. The government has not yet set a formal policy direction, but calls for a parliamentary inquiry and even a special prosecutor have grown louder. At the same time, Seoul faces a diplomatic balancing act.

Lee’s planned visit to Washington, where a meeting with Donald Trump has been floated, makes the timing of any confrontation with Westinghouse particularly sensitive. Still, civil society and policy experts insist that transparency is non-negotiable: unless the full terms of the agreement are disclosed, the settlement will lack domestic legitimacy regardless of diplomatic considerations.

The controversy exposes the structural dilemma of Korea’s nuclear diplomacy. For years, the APR1400 was promoted as a marker of industrial autonomy. The Westinghouse settlement, however, reveals that American intellectual property claims remain embedded at its core. As a result, each future export project will not only be a matter of cost and risk but also of identity: is Korea operating as an independent supplier, or as a partner bound by U.S. oversight?

Looking forward, Seoul faces two unpalatable paths. It can accept the settlement as irreversible, pursuing export opportunities within the limits imposed by royalties and procurement rules. Or it can push for renegotiation and greater independence, at the risk of straining relations with Washington and jeopardizing market access. Either choice comes with steep costs.

The deeper problem is that what began as a commercial contract has become a political marker. The previous administration prioritized immediate export gains, while the current government inherits the long-term financial and diplomatic consequences.

In the end, this settlement is more than a business arrangement. It is a test of how Korea defines itself as a nuclear exporter: as a subcontractor under external authority, or as a sovereign competitor willing to endure friction to preserve independence. Without accountability and transparency, the deal risks constraining not only KHNP’s profitability but also Korea’s strategic room to maneuver for decades to come.

It also carries symbolic weight abroad: the settlement not only defines Korea’s nuclear diplomacy but has simultaneously rescued Westinghouse from decline. What began as a contractual compromise may be remembered as the moment Korea surrendered autonomy while reviving a nearly bankrupt American rival.