Japan's 2011 Fukushima disaster caused construction to falter due to safety concerns and lawsuits from anti-nuclear campaigners. Although the legal action was thrown out, it wasn't the end of Plant Vogtle's problems.

American nuclear power company Westinghouse, which was responsible for designing, engineering and managing the megaproject, went bankrupt in 2017, and construction was taken over by Southern Nuclear. Further delays followed and the cost of the new units has ballooned to $30 billion – more than double its original budget.

However, there is good news. Construction is complete on Unit 3 and in October 2022 the federal government approved loading the radioactive fuel rods needed to generate power. Unit 3 is expected to finally enter service in early 2023, with Unit 4 following later in the year.

America's biggest future megaprojects