Interruption data at individual customer level — Experience from Sweden 2010–2011

All Swedish network operators annually report data on the continuity of supply for their customers, to the Energy Markets Inspectorate, the national regulatory agency. Starting with the reporting period (1 January - 31 December) 2010, continuity of supply information has to be providedfor each individual customer. Further distinctions are made between short (less than 3 minutes), long (3 minutes through 12 hours) and very long (longer than 12 hours) interruptions; planned and unplanned interruptions; and interruption due to events in the local and in other grids. Data for 2010 and for 2011 has been received and analyzed. This paper presents some of the additional information that can be obtained by having access to data at individual customer level, and discusses some further experience with this scheme.