ENTSO-EOn Friday, 21 June 2024, a significant incident occurred in South-East Europe (SEE), which led to a major disruption in the power system of Continental Europe (CE). The incident resulted in a substantial loss of the capacity of supplying power with the consequence of disruption to meet temporally the electricity demand. This incident affected Albania (OST), Bosnia and Herzegovina (NOSBiH), Montenegro (CGES), and Croatia (HOPS). The event was characterised by a series of single episodes occurring in the transmission network, which led in the transmission network, which ultimately led to a (partial) blackout in these four countries.
ENTSO-E publishes the Interim (Factual) Report which provides a description of the system conditions before the incident, recounts the evolution those conditions during the event, as well as the steps taken directly after the incident took place. Furthermore, it outlines the communication between the coordination centres/synchronous area monitors and the TSOs. It also includes the assessment of the incident based on the Incident Classification Scale (ICS) Methodology (developed in accordance with Regulation (EU) 2019/943), according to which the incident is classified as a scale 3.
This Interim (Factual) Report is the result of an intensive process to collect and prepare data about the event which started immediately after its resolution. This report is to serve as basis for further investigation by an Expert Panel (composed of ENTSO-E, ACER and National Regulatory Authorities) shall prepare a Final Report.