IAEA says it was informed that the 330 kV Ferrosplavna-1 power line at the Zaporizhzhia Nuclear Power Plant was disconnected

External power supply at the occupied Zaporizhzhia plant has been cut repeatedly through the conflict, and the established pattern is that a single line loss is operationally serious but not immediately market-moving: the plant has multiple feed lines and, when grid supply fails entirely, relies on backup diesel generation to keep cooling running, a state the IAEA has flagged as the genuinely precarious configuration. The relevant distinction is between one line disconnection, which has been a recurring feature of fighting near the site, and loss of all offsite power, which is the scenario that has historically prompted sharper international reaction. Prior form at the IAEA is to report such events promptly while pressing both sides on the cause; attribution has frequently been contested between Moscow and Kyiv, and the agency's follow-up assessments carry more weight than the initial notification. For energy markets the plant has been offline as a generation source throughout the occupation, so the transmission channel to power prices runs through escalation risk and Ukrainian grid stability rather than lost output. The tells to track are whether the remaining lines stay connected, any IAEA statement on backup power status, and whether the incident coincides with broader strikes on grid infrastructure, which is when comparable episodes have spilled over into regional power and gas pricing.