• Research
  • Emissary
  • About
  • Experts
Carnegie Global logoCarnegie lettermark logo
DemocracyIran
  • Donate
{
  "authors": [
    "Se Young Jang"
  ],
  "type": "other",
  "centerAffiliationAll": "dc",
  "centers": [
    "Carnegie Endowment for International Peace"
  ],
  "collections": [
    "Korean Peninsula"
  ],
  "englishNewsletterAll": "ctw",
  "nonEnglishNewsletterAll": "",
  "primaryCenter": "Carnegie Endowment for International Peace",
  "programAffiliation": "NPP",
  "programs": [
    "Nuclear Policy"
  ],
  "projects": [],
  "regions": [
    "East Asia",
    "South Korea"
  ],
  "topics": [
    "Nuclear Policy",
    "Nuclear Energy"
  ]
}

Source: Getty

Other

South Korea’s Nuclear Energy Debate

South Korean President Moon Jae-in’s announcement that he would resume the construction of two nuclear reactors which had been temporarily halted since mid-July will have a more complicated effect on South Korea’s long-term energy policy.

Link Copied
By Se Young Jang
Published on Oct 26, 2017
Program mobile hero image

Program

Nuclear Policy

The Nuclear Policy Program aims to reduce the risk of nuclear war. Our experts diagnose acute risks stemming from technical and geopolitical developments, generate pragmatic solutions, and use our global network to advance risk-reduction policies. Our work covers deterrence, disarmament, arms control, nonproliferation, and nuclear energy.

Learn More

Source: Diplomat

South Korean President Moon Jae-in announced on October 22 that he would resume the construction of two nuclear reactors which had been temporarily halted since mid-July, accepting a deliberative poll in favor of the resumption. On the surface, this decision might be seen as a direct blow to Moon’s nuclear phase-out policy; however, this deliberative democratic process will have a more complicated effect on South Korea’s long-term energy policy. The majority of the respondents ironically supported restarting construction on the two plants and scaling down nuclear power generation at the same time. Such an ironic but eclectic decision made by citizens will contribute to managing a sharp conflict between pro- and anti-nuclear groups while giving some degree of domestic legitimacy to Moon’s long-term energy roadmap for a gradual nuclear phase-out.

South Korea is the fifth-largest producer of nuclear energy in the world, with its 24 reactors generating about a third of its electricity. During his presidential campaign early this year, Moon pledged to phase out coal and nuclear energy, mainly due to the public’s growing concerns about air pollution and nuclear safety. Instead, Moon vowed to increase the share of renewable energy up to 20 percent of total electricity generation by 2030. After taking office, Moon reconfirmed his campaign promise; in a speech to mark the permanent shutdown of Kori-1, South Korea’s oldest commercial nuclear reactor which went into operation in 1978, he declared, “We will abolish our nuclear-centered energy policy and move towards a nuclear-free era. We will completely scrap construction plans for new nuclear reactors that are currently under way.”

As of late May 2017, state-run nuclear operator Korea Hydro & Nuclear Power (KHNP) had five new nuclear reactors under construction; among them, three reactors were nearly complete while other two (Shin Kori no. 5 and no. 6) had been 28.8 percent done (10.4 percent in terms of actual construction) with roughly $1.4 billion already spent and estimated total losses (sunk costs) of $2.3 billion. Moon’s pursuit of “a nuclear-free era” made the fate of the two ongoing construction projects controversial, sparking heated debates between pro- and anti-nuclear campaigners in South Korea. Advocates for resuming the construction assured that the Shin Kori 5 and 6 would be “the most up-to-date version of the third-generation type, equipped with intensive safety features,” while opponents expressed their concerns about the location of these nuclear reactors in a highly-populated area, no matter how advanced safety measures would be.

This article was originally published in the Diplomat.

Read the article

About the Author

Se Young Jang

Former Nonresident Scholar, Nuclear Policy Program

Se Young Jang was a nonresident scholar in the Nuclear Policy Program at the Carnegie Endowment for International Peace.

Se Young Jang
Former Nonresident Scholar, Nuclear Policy Program
Nuclear PolicyNuclear EnergyEast AsiaSouth Korea

Carnegie does not take institutional positions on public policy issues; the views represented herein are those of the author(s) and do not necessarily reflect the views of Carnegie, its staff, or its trustees.

More Work from Carnegie Endowment for International Peace

  • Recruit polices vow as they join in the police at Beijing Public Security Bureau on February 18, 2011 in Beijing, China. (
    Paper
    China’s Police and Security Cooperation Agreements

    China’s Ministry of Public Security is often portrayed as a domestic law enforcement agency, but it is also a global security actor. This paper explores how MPS has used international law enforcement and security cooperation agreements—over 200 since 2006—to advance China’s vision of security in a changing global environment.  

      • Sheena Chestnut Greitens

      Sophie Zhuang, Sheena Chestnut Greitens, Cameron Waltz

  • Commentary
    Strategic Europe
    Europe Should Not Let Nuclear Nonproliferation Die

    Amid uncertainty caused by the Iran war, the global drive for nonproliferation has stalled. With Europe diplomatically marginalized and countries reassessing their nuclear options, efforts to curb the spread of nuclear weapons risk becoming irrelevant.

      • Jane Darby Menton

      Jane Darby Menton

  • Chinese President Xi Jinping interacts with U.S. President Donald Trump during a state banquet at the Great Hall of the People on May 14, 2026 in Beijing, China.
    Commentary
    Post U.S.-China Summit: Managed Instability

    The U.S.-China Summit produced a welcome commitment to build a constructive, strategically stable relationship. However, the United States has a full agenda, including the USMCA review beginning this week, that will likely target Chinese practices of concern. If China views these efforts as inconsistent with the agreements reached in Beijing, it may slow or halt progress in response. 

      • Barbara Weisel

      Barbara Weisel

  • Commentary
    Diwan
    Corrupted by Absolute Power

    In an interview, Marc Lynch discusses his new book decrying the post-1990 U.S.-dominated order in the Middle East.

      Michael Young

  • people looking at damage
    Commentary
    Emissary
    Two Wars Later, Iran’s Nuclear Question Is Still on the Table

    Tehran may conclude that its ability to disrupt the global economy via the Strait of Hormuz provides enough deterrence to begin quietly rebuilding its nuclear program.

      • Jane Darby Menton
      • Mohammad Ayatollahi Tabaar

      Jane Darby Menton, Mohammad Ayatollahi Tabaar

Get more news and analysis from
Carnegie Endowment for International Peace
Carnegie global logo, stacked
1779 Massachusetts Avenue NWWashington, DC, 20036-2103Phone: 202 483 7600
  • Research
  • Emissary
  • About
  • Experts
  • Donate
  • Programs
  • Events
  • Blogs
  • Podcasts
  • Contact
  • Annual Reports
  • Careers
  • Privacy
  • For Media
  • Government Resources
Get more news and analysis from
Carnegie Endowment for International Peace
© 2026 Carnegie Endowment for International Peace. All rights reserved.