2018, the U.S. Nuclear Regulatory Commission gave the APR-1400 Standard Design Approval, and in September 2019 it received a design certificate valid for 15 years.

In 2022, Westinghouse Electric Company, which had acquired Combustion Engineering in 2000, filed a lawsuit in a U.S. federal court against KHNP and Kepco alleging that the APR-1400 was copied from the System 80 reactor. This had the indirect effect that the U.S. government