section_path: Chronology/Synchronization
section_name: Synchronization
paragraph_text: Synchronization
  
  On Saturday 8 February 2025 at 9:09 (UTC+2), the Baltic states permanently disconnected from IPS/UPS. For a day, they operated in isolated mode and conducted various frequency, voltage stability and system resilience tests. Following the disconnection, Kaliningrad became a power island, disconnected from its surrounding states. During the tests in Lithuania, the Elektrėnai Power Plant briefly went offline unplanned, but soon reconnected. On Sunday 9 February 2025, at 14:05, the Baltic states successfully synchronized with the continental European electricity grid.