1. Power outage annual report.Blackout Tracker Canada annual repot 2013(Get from: pqlit.eaton.comill_download_bylitcode.asp?doc_id=24005)
2. Power outage annual report. Blackout Tracker United States annual repot 2013 (Get from: pqlit.eaton.comill_download_bylitcode.asp?doc_id=24003)
3. European Network of Transmission System Operators for Electricity.Nordic grid disturbance statistics 2012. (Getfrom: http://www.fingrid.fi/fi/voimajarjestelma/voimajarjestelmaliitteet/S%C3%A4hk%C3%B6n%20toimitusvarmuus/Pohjoismainen_hairiotilasto_2012.pdf)
4. Alberta Municipal Affairs. Statistics electrical incidents in Alberta (January 1 to December 31, 2013) (Get from: http://www.municipalaffairs.alberta.ca/cp_electrical_forms_and_reports.cfm)
5. Gerd H. Kjolle. What do fault statistics tell us regarding causes resulting in power outages? (Get from: https://www.sintef.no/project/Vulnerability%20and%20security/Publications/Presentations/Workshop%2020110927_fault%20statistics.pdf)