The Zaporizhzhya Nuclear Power Plant (ZNPP) has been without off-site power for more than a week and is currently relying on emergency diesel generators (EDGs) to provide the electricity needed for essential nuclear safety and security functions, IAEA Director General Rafael Mariano Grossi said today, underlining the importance of ensuring the site has sufficient diesel fuel available. The plant lost connection to its only remaining off-site power line, the 330 kilovolt (kV) Ferosplavna-1 line, on 20 August following military activity on the northern side of the Dnipro River. Since then, it has been operating several EDGs to supply the power required for its own needs, most importantly for pumps that cool all six reactors and their spent fuel pools. In view of the extended loss of external electricity, the IAEA team at the ZNPP has been closely monitoring the diesel fuel situation. On Monday, the team visited most of the site’s 20 EDGs to observe fuel levels in their tanks and to assess how long the available reserves could support the plant if off-site power is not restored. On Friday, the ZNPP reported that it now has approximately ten days of diesel fuel available on site for EDG operation, which is the minimum regulatory requirement. The IAEA team was also informed that the most recent delivery of fuel to the plant’s off-site fuel farm took place almost half a year ago, in March. A further delivery, planned for May, has reportedly been delayed because of frequent military activity in the area. The IAEA has not been able to visit this fuel storage since March 2025, with the ZNPP citing security reasons. However, on Thursday and Friday, the team observed the transfer of several dozens of tonnes of diesel fuel from two different off-site locations near the ZNPP to the plant – both to report on the nuclear safety situation of the plant and to provide security assurances during the transfers. Expressing concern about the diesel fuel situation, Director General Grossi