The Swedish Energy Market Inspectorate (Ei) supervises all national electrical grid companies and set demands on electrical power transmission to hold high quality standard without too many power failures and disturbances. All power companies must report all power failure statistics annually.
Every year, Ei presents a compilation of these statistics where the latest report in Dec’2017 refers to failures during 2016. Below, number of power failures longer than 3 minutes are presented regionally. Among others, Östersund places itself in best-of-class league!
(Källa/source: Swedish Energy Market Inspectorate (Ei) report, Ei R2018_07 p. 15)