The owner and operator of Fukushima-1, Tokyo Electric Power Company (TEPCO), was the first in line of responsibility in responding to the emergency situation after the earthquake and tsunami on March 11, 2011. This chapter evaluates how prepared TEPCO was against natural disasters and how it responded to the progress of the accident. Despite its efforts, the accident led to the release of large amounts of radiation. The chapter reviews what might have been done to reduce the size of the disaster. In conclusion, it evaluates any organizational issues within the company.