Indicators

Continuity of service

E-REDES uses both general and individual indicators to characterise the continuity of the distribution grid service.

Our indicators
General indicators
Individual indicators

In compliance with the Quality of Service Regulation, E-REDES  uses general service continuity indicators for the different voltage levels.

  1. Section: Interruption classification

    Subsection 1: As regards duration

    Short interruption- interruption of one second or more and shorter than or equal to three minutes;

    Long interruption- interruption lasting more than three minutes.

    Subsection 2: As regards the type

    Forecasted interruptions- interruptions owing to an arrangement with customers or also on the grounds of public interest or for service reasons where customers are given minimum notice thereof.

    Accidental interruptions- the rest.

  2. SAIFI (High, Medium and Low Voltage) - Average long interruption frequency of the system (acronym internationally adopted from the English designation: “System Average Interruption Frequency Index”);

     SAIDI (high, medium and low voltage) - average length of long interruptions of the system (acronym internationally adopted from the English designation of the indicator "System Average Interruption Duration Index");

     MAIFI (High and Medium Voltage) - Average frequency of short system interruptions (acronym internationally adopted from the English designation of the indicator “Momentary Average Interruption Frequency Index”);

    TIEPI (medium voltage) - equivalent interruption time of installed power;

    END - Undistributed power.

  3. The distribution system operator shall determine, in each calendar year and for all delivery points:

    - Number of interruptions;

    - Total duration of interruptions, in minutes.

     

  4. > Zone A: district capitals and places with more than 25,000 customers;

    > Zone B: places with a number of customers between 2,500 and 25,000;

    > Zone C: all other places.