Negotiations between Korea Hydro & Nuclear Power (KHNP) and Daewoo Engineering & Construction (047040.KS) over the Dukovany nuclear plant in the Czech Republic collapsed after the parties failed to agree on construction volumes, pricing and responsibility for additional facilities. KHNP sought 125% of the bid volume for 7.7 trillion won, while Daewoo’s final offer was 7.6 trillion won for 100% of the volume. Although KHNP’s offer was higher in headline value, Daewoo calculated that covering 125% of the volume at its quoted cost would require about 9.5 trillion won, leaving a 1.8 trillion won shortfall. Daewoo also estimated 1 trillion won in additional work, bringing the potential burden close to 3 trillion won. KHNP said its proposal would reduce volume risk by incorporating expected increases into the contract amount, revising the total around July 2029 after basic-design approval and settling most uncertain civil engineering work according to actual performance. It also sought lower unit prices and overhead, along with corrections to calculation errors. The companies held 91 rounds of talks after winning the Czech nuclear order in June last year, but KHNP terminated the negotiations in a letter sent on the 30th of last month. KHNP plans to select a new builder through competitive bidding and revise the contract amount and terms. Only Hyundai Engineering & Construction (000720.KS), Samsung C&T (028260.KS) and Daewoo have experience leading main equipment construction for large nuclear plants in South Korea.