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24 March 2015 Last updated at 18:18 GMT
Has the situation improved since then?
Ahead of the presidential elections on 28 March, BBC Africa tells you what you need to know about the nation's power generation.
Produced by Baya Cat
Nigeria experienced power outages about 46 days per year from 2007-2008, with each outage lasting an average of six hours, according to a World Bank report.