Report
05.11.2026
Cross Sectoral

CEER Benchmarking Report 7.1 on the Continuity of Electricity and Gas Supply

Context

CEER Benchmarking Report 7.1 updates the key data on continuity of electricity supply and the technical operational quality of gas supply first presented in the 7th CEER-ECRB Benchmarking Report (2022). Prepared by CEER’s Energy Quality of Supply Work Stream, it covers the period 2019 to 2024 and draws on data from 39 participants: CEER Members and Observers (including Switzerland) and Energy Community Regulatory Board Contracting Parties. It tracks the main continuity of supply indicators (SAIDI, SAIFI, CAIDI, MAIFI, AIT and ENS) and presents the latest data on circuit length, the share of underground cables, gas pipelines, gas storage and LNG infrastructure.

Key Findings

  • Electricity: all 39 participants monitor SAIDI and SAIFI, and unplanned interruptions appear stable or improving over time. In 2024, unplanned SAIDI excluding exceptional events ranged from 7.48 to 2,370.60 minutes per customer, and unplanned SAIFI from 0.18 to 42.34 interruptions per customer.
  • Trends: when all electricity indicators are combined, only 14% of countries show a worsening trend between 2019 and 2024, while 68% are stable and 18% are improving.
  • Planned interruptions: many countries recorded an increase in planned SAIDI and SAIFI, which may reflect higher investment in network repair and replacement aimed at reducing unplanned interruptions in the future.
  • Network structure: a higher share of underground cabling is generally associated with better continuity of supply, although other operational and environmental factors also play a role.
  • Gas: continuity indicators are much lower than in electricity, as underground pipelines are less exposed to weather. Unplanned SAIDI in 2024 ranged from 0.05 to 223.09 minutes per customer. Only 5% of countries show a worsening combined trend, while 89% are stable and 7% are improving.
  • Infrastructure: 17 countries report operating natural gas storage, and 14 report LNG infrastructure.

Outlook

Continuity indicators are still not fully harmonised across Europe, notably in how voltage levels and exceptional events are defined, which limits direct country comparisons. The report therefore presents data both including and excluding exceptional events. Commercial quality and voltage quality, natural gas quality will be addressed in detail in the next full CEER Benchmarking Report.