As per a media report, the East Coast-Singapyeong project features the world’s first commercial application of a 500-kilovolt, 90-degree Celsius HVDC cable.

Nov 24, 2025

LS Cable & System has announced that it has commenced the construction of the nation’s largest HVDC project, utilizing the world’s highest-capacity cable technology, as per a media report. The East Coast-Singapyeong project features the world’s first commercial application of a 500-kilovolt, 90-degree Celsius HVDC cable.

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The East Coast-Singapyeong line is the first phase of the East Coast-Capital Area Project, designed to transmit power generated on the east coast to the Seoul metropolitan area. The project aims to stabilize the national power supply and demand.

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The cable received official certification from Korea Electric Power Corp. in June. By raising the allowable conductor temperature to 90-degree Celsius, compared to the standard 70-degree Celsius, the new cable increases transmission capacity by up to 50 percent. This will be a major development for high-power capacity transmission in the cable industry.