Daya Bay has been maintaining an excellent record of plant reliability, performance and safety since its commissioning in 1994. The good performance is achieved through the adoption of best international practice in its operation, well trained workforce, and well established safety practices and procedures. These procedures and measures cover all major aspects in safety, training and operational matters of the power station.

Over the years, it has ranked high in the World Association of Nuclear Operators (WANO) performance indices across various major aspects of generation capability, plant safety and efficiency, industrial safety and radiation protection.

In 2014, Daya Bay had four indices achieved at top quartile performance including safety system performance, fuel reliability, chemistry performance and industrial safety, with 3 other indices above median level when comparing with about 440 nuclear units on the nine WANO performance indicators as shown in the table below: