Photograph) An LS Cable & System employee inspects the East Coast–Singapyeong construction site, where the world's highest-capacity HVDC cables are being installed


■ Continuing national power grid business following completion of Phase 1  
■ To install world's highest-capacity 525 kV, 90℃ HVDC cables  
■ Participating in global HVDC projects, including with Germany's TenneT


LS Cable & System announced on the 15th that it has won a turnkey contract for Phase 2 of the East Coast–Capital Region high-voltage direct current (HVDC) project being promoted by the Korea Electric Power Corporation.

The company previously took part in Phase 1 for the East Coast–Singapyeong section in 2024, and will now participate in Phase 2 for the East Coast–East Seoul section. With Phase 1 valued at approximately KRW 88 billion and Phase 2 at KRW 146 billion, the total supply contract is worth approximately KRW 234 billion.

The East Coast-Capital Region HVDC project is a core national power grid initiative designed to supply large-scale power generated in the East Coast region to the capital area to improve the stability of national power supply and demand. It is one of the largest power grid projects in Korea.

LS Cable & System is the first company in Korea to independently develop and commercialize 500 kV-class HVDC cables, which have become a national core technology. The company has also proven its technological competitiveness by commercializing 525 kV, 90℃-class HVDC cables, which have the world's highest transmission capacity.

Since entering the submarine HVDC cable market, which is traditionally dominated by European manufacturers, LS Cable & System has taken part in the Jeju 2 and 3 interconnection projects and Phases 1 and 2 of the Bukdangjin-Godeok project. Recently, the company cemented its position overseas by securing a contract worth approximately KRW 3 trillion—the largest for any single supplier—in a KRW 7 trillion extra-high voltage power grid project being executed by Germany's TenneT.

HVDC features lower transmission loss than alternating current and is advantageous for long-distance, high-capacity transmission, making it a core technology for the global energy transition. With the importance of large-scale power transmission growing due to expanding investments in AI data centers and high-tech industries, HVDC has become essential for national power grids.

"As HVDC projects are directly linked to the stability of the national power grid, proven commercialization experience in actual power grids is just as crucial as technological prowess," said Kim Hyung-won, head of the Energy/Construction Business Division at LS Cable & System. "With our strong track record in major domestic and international HVDC projects, we will actively participate in the West Coast Energy Expressway project as well."