원자력 발전의 실제 원가는 경제적 비용이외에도 원자력 발전으로 인한 사고의 위험과 원자력 발전에 의한 외부비용을 포함하여야 한다.
The request for cost evaluation of power generating technologies taking account of accident risk costs and external costs as well as economic costs of nuclear power plants has been increasing since the Fukushima Daiichi nuclear accident. At a time when the international community recognizes the risk of nuclear power anew after the Fukushima Daiichi nuclear accident in Japan, the demand for evaluation of "Real costs" of nuclear, which includes nuclear accident risk costs and accident risk avoidance costs, has increased.