Ukraine's three remaining nuclear power plants are approaching their final safety margins after Russian strikes damaged critical power infrastructure, according to Ukrainian officials. The attacks have degraded backup power systems essential for reactor cooling and safety operations.

Zaporizhzhia, Europe's largest nuclear facility, and two other plants are now operating with diminished safety buffers. Ukraine's energy grid has been severely compromised by months of targeted strikes on power generation and transmission facilities, creating cascading risks for nuclear safety systems.

The situation represents a dangerous escalation in the conflict's impact on civilian infrastructure. Without reliable backup power, nuclear plants face increased risk of cooling system failures that could lead to radiation releases. Ukraine's nuclear safety authority has warned that degraded power supplies threaten the ability to maintain safe reactor operations during emergencies.