Off-Site Power Restored to Zaporizhzhia Nuclear Plant After 15-Hour Blackout as IAEA Warns of Grid Fragility

Analysis
Ferosplavna-1 reconnection by June 21 is likely, which would lift ZNPP from single-line to two-line redundancy while leaving reactor cooling at roughly a fifth of pre-war grid capacity. Moderate confidence rests on active preparations already under way at the site but is constrained by October's precedent, when damage discovered outside the agreed ceasefire zone stopped an analogous repair before completion. Undiscovered damage along Ferosplavna-1's remaining span could push reconnection past June 21 without any breach of the ceasefire framework. The record anchors on a single IAEA primary source amplified by wire pickup rather than independent corroboration. Reconnection success by that date would free IAEA diplomatic bandwidth to shift toward longer-term grid hardening; failure would require a third emergency ceasefire brokering cycle for an as-yet-unrepaired line.