Daehan Electric Wire to supply 140 billion won in extra-high-voltage cables to Singapore's power authority

Daehan Electric Wire announced Monday it will supply 400-kilovolt (kV) and 230kV oil-filled (OF) extra-high-voltage cable systems to Singapore's power authority in a contract worth about 140 billion won.

OF cables use insulating oil injected into the cable interior to ensure dielectric performance. The complex production process and demanding maintenance requirements mean only a handful of companies worldwide can manufacture them. Daehan Electric Wire was the first South Korean company to develop and commercialize OF extra-high-voltage cables.

At 400kV — the highest voltage level operated in Singapore — vendors must demonstrate technical capability and a track record comparable to 500kV-class systems to qualify for selection. Daehan Electric Wire developed South Korea's first 500kV power grid and has successfully supplied it to the United States and other markets. The company currently holds the top market share in the extra-high-voltage grid segment of 400kV and above.

Meanwhile, including this latest project, Daehan Electric Wire has secured about 1 trillion won ($648 million) in contracts in Singapore alone over the past two years. Business opportunities there are expected to grow further as the city-state pushes ahead with AI data center expansion, power grid modernization and renewable energy integration.

"This contract demonstrates that Daehan Electric Wire is establishing itself as a key player in Singapore's power grid market," a company official said. "We will sharpen our technological edge in extra-high-voltage cables as well as in high-voltage direct current and submarine cable segments to accelerate our push into high-value-added markets."