Ukraine’s Zaporizhzhia Nuclear Power Plant, the largest nuclear facility in Europe, is back on the grid. The plant reconnected to external power on June 13 after spending nearly 30 days running on emergency diesel generators, a precarious situation that required a ceasefire brokered by the International Atomic Energy Agency to resolve.
IAEA Director General Rafael Mariano Grossi confirmed that the repaired 750 kV Dniprovska power line was energized at 09:30 local time and fully restored by 13:00. The outage, triggered by an attack on a nearby electrical substation in late May, was the longest the plant has endured since Russia’s full-scale invasion began in 2022.
A nuclear plant held together by temporary truces
This was the 19th total loss of off-site power at the Zaporizhzhia plant since the war began.
The ceasefire that enabled repairs was the sixth temporary “window of silence” negotiated by the IAEA since late 2025. IAEA teams were on site monitoring repair work starting the weekend before the reconnection. The ceasefire allowed crews to complete demining operations and fix critical infrastructure, including the Dniprovska line and another connection called Ferosplavna-1.
