The energy landscape in Moldova has been significantly impacted following the disconnection of the 400 kV Isaccea–Vulcănești transmission line, a vital link for electricity imports from Romania. This interruption, which occurred on March 23 due to strikes on energy infrastructure in southern Ukraine, has compelled the Moldovan authorities to declare a state of emergency in the energy sector. The transmission line’s outage has raised alarms over the stability of Moldova’s electricity supply, which heavily relies on this interconnection.
Typically, the Isaccea–Vulcănești line supplies between 60% and 70% of Moldova’s total electricity consumption, terminating at the MoldGRES power plant located in the Transnistrian region. The sudden loss of this critical route has resulted in a potential shortfall of 350 to 400 MW during peak demand periods, placing immense strain on the national energy system.
Initial investigations indicate that severe damage to support structures along the line is responsible for the disruption, likely linked to ongoing military actions in Ukraine. Compounding the issue are debris from downed drones in proximity to the affected area, which complicates repair efforts and necessitates demining operations before crews can safely commence restoration work. Despite these challenges, Moldova has not experienced widespread blackouts thus far, largely due to lower seasonal electricity demand and reliance on alternative sources to sustain supply.
At the time of the incident, Moldova’s electricity demand was approximately 620 MW. Domestic production contributed around 320 MW, with an additional 120 MW from MoldGRES and roughly 300 MW imported from Ukraine. In response to the crisis, the energy system has been adjusted to operate under emergency configurations, utilizing isolated 110 kV lines and reactivating the 330 kV Bălți–Dnestrovsk connection. However, officials caution that these measures offer limited coverage and cannot fully replace the lost capacity from the main interconnection.
Transmission operators from Romania, Moldova, and Ukraine are collaborating to assess damages and plan subsequent steps. In parallel, the Moldovan government has enacted emergency powers to facilitate rapid decision-making and access to financial resources. This includes provisions for potential consumption restrictions or special operational rules for businesses should conditions worsen. The declaration of a 60-day emergency period underscores concerns about prolonged supply instability as authorities work urgently to secure alternative energy sources and restore damaged infrastructure amid challenging circumstances.
