HJ Shipbuilding & Construction set December 31, 2026 as the end of its Singapyeong converter station civil works contract. The previous amendment left the deadline unresolved during negotiations. The value rose from ₩85.10bn to ₩85.42bn. That equals 4.78% of FY2022 consolidated revenue. Korea Electric Power is the customer. Progress payments apply without an advance. Further changes remain possible.