[Edaily Reporter Kwon Oh-seok] #Hyosung Heavy Industries’ stock price is surging. It appears that buying interest is surging following news that the company is establishing a production base for ultra-high-voltage circuit breakers in the U.S. to fully target the North American power market.

According to MP Doctor on the 15th, Hyosung Heavy Industries was trading at 3,717,000 won as of 10:02 a.m., up 10.10% from the previous trading day.
The company announced the previous day that it had signed an agreement through its subsidiary, Hyosung HICO, to establish a joint venture (JV) for gas-insulated circuit breakers (GCBs) called “Hyosung HICO Breaker” with a subsidiary of Quanta Services, a U.S.-based power infrastructure EPC specialist.
The company explained that this investment is expected to serve as a cornerstone for securing a leading position in the next-generation power grid market—considered a core infrastructure of the AI era—going beyond a simple expansion of production facilities. The joint venture, scheduled to be established this coming July, plans to begin producing ultra-high-voltage circuit breakers ranging from 72.5 kV to 800 kV at its Cannonsburg plant in Pennsylvania, U.S., starting in October.
With this investment, Hyosung Heavy Industries has become the only domestic power equipment manufacturer to establish a system capable of producing both transformers and circuit breakers within the United States. The company’s strategy is to respond to the U.S. government’s “Buy American” procurement policy and enhance the competitiveness of its local supply chain by leveraging synergies with its existing ultra-high-voltage transformer plant in Memphis, Tennessee. In particular, the company argues that this joint venture is highly significant as it secures production capacity for 800 kV ultra-high-voltage circuit breakers, which are emerging as a key component in the modernization of the U.S. power grid.