Interesting, I just did some wiki reading - “This last report blames the latest increase of costs on the contractor not completing work as scheduled. Another complicating factor in the construction process is the bankruptcy of Westinghouse in 2017.[13] In 2018 costs were estimated to be about $25 billion.[3] By 2021 they were estimated to be over $28.5 billion.[14] Upon completion of Units 3 and 4 in 2023, Vogtle will become the largest nuclear power station in the United States.”