Amendment to Extend Contract Period for 500kV Dongseoul Substation Civil Works (KRW 73.4bn)


  • Amendment to extend contract period for 500kV Dongseoul Substation civil works: end date changed from 2029-08-30 to 2030-01-02 (approx. 4 months extension), contract amount KRW 73,371,983,079 (3.89% of 2024 consolidated sales)
  • Counterparty: Korea Electric Power Corporation (no relationship)
  • Payment terms: no advance payment, progress payments based on completion
  • Location: San2, Gamil-dong, Hanam-si, Gyeonggi-do (within Dongseoul Substation site). Main works: earthwork (excavation 107,935㎥, underground power duct 335.32m, piling 4,341m) and building construction (1 basement, 3 floors, 500kV indoor non-standard substation)
  • Contract period and amount are subject to change as per contract conditions
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KOSPI Filing Information


  • Filing: [Correction of Description] Conclusion of Single Sale and Supply Contract
  • Company: HJ Shipbuilding & Construction (097230)
  • Submission: HJ Shipbuilding & Construction Co., Ltd
  • Receipt: 05-18-2026
  • Under KRX KOSPI Market Division