South Korea’s Petrochemical Sector Braces for Shock Therapy: Massive Naphtha Cracker Cuts Ahead

South Korea, the world’s largest importer of naphtha, is preparing for a sweeping restructuring of its petrochemical industry amid a crushing supply glut. Industry analysts warn that smaller, independent naphtha crackers may be shut down entirely, while others could be merged into larger entities as companies scramble to restore profitability.

The Ministry of Trade, Industry and Energy recently confirmed that the country’s top ten petrochemical firms have reached a rare consensus: to slash 2.7–3.7 million metric tons per year of naphtha cracking capacity—equivalent to 25% of South Korea’s total capacity. This cut far exceeds market expectations, reflecting the severity of the oversupply crisis. Companies must submit detailed implementation plans by year-end, with the government pledging fiscal support and tax incentives to facilitate the restructuring.

Catherine Tan, head of base chemicals at Wood Mackenzie, noted that the impact will fall disproportionately on naphtha demand rather than LPG. “Currently, 82% of South Korea’s ethylene production depends on naphtha feedstock. While importing U.S. ethane is theoretically an alternative, the infrastructure required makes it a long-term rather than short-term solution,” she said.

Industry watchers expect a domino effect across the value chain. According to ICIS chief analyst Salmon Lee and senior analyst Amy Yu, the optimization of ethylene capacity will inevitably lead to reductions in downstream polyolefins, aromatics, and monoethylene glycol production, signaling a contraction of the entire petrochemical complex.

Several companies are already preparing drastic measures. An SK Innovation spokesperson confirmed the firm is considering multiple scenarios, including shuttering one of its naphtha crackers. Analysts suggest YNCC, South Korea’s third-largest ethylene producer, could close one or two of its three units. Meanwhile, Hyundai Heavy Industries is reportedly in talks with Lotte Chemical—South Korea’s second-largest ethylene producer—over potential acquisitions or mergers involving its naphtha cracker operations. Lotte has yet to comment.

The stakes are high. With 82% of feedstock tied to naphtha, cuts on this scale will reshape South Korea’s role as a global buyer, sending shockwaves through Asian naphtha markets. For refiners and exporters from the Middle East to Europe, the fallout could mean weaker demand and narrower margins. For South Korea, however, this is less about feedstock preference and more about survival: a radical consolidation aimed at salvaging profitability in one of the world’s most oversupplied petrochemical markets.