The Fukushima nuclear accident will cost an estimated ¥11.08 trillion, almost double the government projection made at the end of 2011, according to a recent study by Japanese college professors.

The figure includes ¥4.91 trillion to compensate affected residents, ¥2.48 trillion for radiation cleanup work, ¥2.17 trillion to scrap the Fukushima No. 1 plant and ¥1.06 trillion to temporarily store radioactive soil and other waste generated by decontamination work, according to the study.

Kenichi Oshima, environmental economics professor at Ritsumeikan University in Kyoto, and Masafumi Yokemoto, professor of environmental policy at Osaka City University, calculated the costs based on materials and data released by the government and plant operator Tokyo Electric Power Co.