Tokyo Electric Power Company in Japan will increase the annual amount of treated radioactive wastewater from the Fukushima Daiichi nuclear power plant accident it releases into the ocean by about 14%.
Tokyo Electric said on the 22nd that for fiscal 2026 (April 2026–March 2027), it plans to discharge 62,400 tons over eight rounds. With one more annual round of discharge, the volume has also increased.
Tokyo Electric explained, "As a result of improving efficiency through discharge operations so far, the interval between rounds can be shortened."
Tokyo Electric has stored radioactive contaminated water generated during the process of dealing with the 2011 accident at Fukushima Daiichi in tanks and, after processing it through the Advanced Liquid Processing System (ALPS) to filter out radioactive materials, has been collecting a certain amount and releasing it into the sea. The discharges began on Aug. 24, 2023.