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Seoul may scale down nuclear expansion plans

Seoul may scale down nuclear expansion plans

The delay to finalising the country's nuclear goals may make it unfeasible to build sufficient capacity before current assets expire, writes Evelyn Lee London, 15 January (Argus) — South Korea's energy industry has faced a whirlwind of challenges since the impeachment of now-suspended president Yoon Suk-Yeol, with the political turmoil stalling a crucial review of its energy strategy in the national assembly. The government is now seeking to scale down its nuclear expansion ambitions in order to hasten the plan's review. Yoon's surprise declaration of martial law last month was reversed within six hours owing to bipartisan political pressure and widespread protests, which resulted in a national assembly vote in favour of the president's impeachment and his subsequent arrest on 15 January. Yoon is suspended from office pending a ruling by the country's constitutional court — due within six months of the impeachment vote on 14 December. If six out of nine justices vote to uphold the impeachment, Yoon will be removed from office and presidential elections will be held within 60 days. South Korea acted quickly following the martial law declaration, but government action has overall been slowed down by the political turmoil — including on energy policy. The latest draft of its long-overdue electricity plan was completed in June and scheduled to be submitted to the Trade, Industry, Energy, Small and Medium-sized Enterprises and Start-ups Committee of the national assembly by the end of last year. But the committee has suspended general meetings since 19 December, according to schedules released on its website. The long-term electricity plan is renewed every two years and serves as a basis for business planning, especially for state-controlled companies. Gas incumbent Kogas' procurement strategy has historically reflected the electricity plan. The latest draft lays out Seoul's intention to build three more nuclear reactors by 2038. But planning and construction would take nearly 14 years, according to the government, so the delay in finalising the plan could result in a power supply shortfall by 2038 — when 9.15GW of existing nuclear capacity is set to expire. Nuclear fallout The government may opt to scale down its nuclear expansion ambitions in order to get the draft electricity plan seen by the committee — which must review the plan, although it is not required to approve it. And less nuclear capacity could increase the need for more gas-fired capacity. The energy ministry pledged on 8 January to finalise the plan by June, after which it will pass related bills including the power grid act, but it did not say how it intends to progress the plan in the national assembly. The Korean Nuclear Society (KNS) responded on 9 January, accusing the government of allegedly planning to revise its nuclear objectives so it can speed up the plan's progress. The government's intent to revise its nuclear goals "without any scientific basis" shows that the electricity plan is just a "political bargaining tool that can vary depending on political interests", the KNS said. This threatens the stability of the South Korean electricity market, it added. The ministry did not respond to Argus' request for comment. But the alleged revision may not have been solely driven by political motives. Seoul may have missed the window of opportunity for approving new nuclear capacity in the timescale required, judging by the 14-year timeline for planning and construction. It remains unclear how the government would offset any reduction in its nuclear ambitions, but South Korea's slow grid development may leave little alternative other than boosting gas-fired capacity. Under the current draft electricity plan, gas-fired output would account for a 25.1pc (160.8TWh) share of total generation in 2030 and 11.1pc (78.1TWh) in 2038, up from 22.9pc (142.4TWh) and 9.3pc (62.3TWh), respectively, in the previous plan. Send comments and request more information at feedback@argusmedia.com Copyright © 2025. Argus Media group . All rights reserved.