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Qual­i­ty of sup­ply

The Bundesnetzagentur publishes the supply interruption figures for electricity and gas networks.

Requirements for reporting supply interruptions

Electricity and gas supply network operators are required under section 52 of the Energy Act (EnWG) to submit to the Bundesnetzagentur by 30 April of each year a report on supply interruptions in their networks.

Electricity networks - supply interruption figures

Electricity network operators in Germany are required to provide information on the

  • time
  • duration
  • extent
  • cause

of interruptions in their annual reports on supply interruptions in their networks. The Bundesnetzagentur uses the information to calculate the system average interruption duration index (SAIDI). This indicates the average interruption duration per customer in one calendar year.

Planned interruptions and interruptions caused by force majeure, for instance by natural disasters, are not included. Only unplanned interruptions longer than three minutes and caused by atmospheric effects, third-party intervention, ripple effects from other networks or other disturbances within the network operator's responsibility are included in the calculations.

SAIDI-Wert Strom (gesamt) seit 2006

Supply interruption figures for the electricity networks 2006-2017 (nationwide)

Year

General information

Low voltage

Medium voltage


Operators/
Networks
Customers
(millions)
Number of interruptions (thousands)SAIDIEnWG
(minutes)
Number of interruptions (thousands)ASIDIEnWG
(minutes)
Overall SAIDIEnWG
(minutes)

2018

866 / 87250.7143.72.3423.711.5713.91

2017

862 / 86950.5143.02.2223.512.9215.14

2016

860 / 86850.3148.32.1024.310.7012.80

2015

850 / 86049.9150.92.2526.710.4512.70

2014

874 / 88449.6147.82.1926.010.0912.28

2013

868 / 87849.5151.42.4727.812.8515.32

2012

866 / 88349.3159.02.5732.013.3515.91

2011

864 / 92848.9172.02.6334.712.6815.31

2010

890 / 96349.0169.22.8037.112.1014.90

2009

821 / 84248.4163.92.6335.112.0014.63

2008

814 / 83548.4171.52.5736.614.3216.89

2007

82548.5196.32.7539.516.5019.25

2006

78148.5193.62.8634.418.6721.53

Gas networks - supply interruption figures

The Bundesnetzagentur again conducted a comprehensive survey of gas supply interruptions in Germany. The approximately 720 gas network operators are required to provide information on all supply interruptions to the Bundesnetzagentur by 30 April of each year. The Bundesnetzagentur uses the information to calculate the system average interruption duration index (SAIDI). This indicates the average interruption duration per customer.

Only unplanned interruptions caused by third-party intervention, ripple effects from other networks or other disturbances in the network operator's area are included in the calculations.

The comprehensive survey of supply interruptions in all gas networks in Germany in 2018 produced the following results:

Results for 2018
Pressure rangeSAIDINotes
<=  100 mbar0.45 min/aHouseholds and low-volume customers
>    100 mbar0.03 min/aHigh-volume customers
>    100 mbar0.00 min/aDownstream network operators
All pressure ranges0.48 min/aSAIDI for all customers

The SAIDI figures for gas network operators in Germany have been calculated by the Bundesnetzagentur since 2006:

SAIDI Gas seit 2006

* excluding an accident (details in German here)