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In Ghana, dumsor (Akan pronunciation: [dum sɔ] ‘off and on’) is a persistent, irregular, and unpredictable electric power outage.[1] The frequent Ghanaian blackouts are caused by power supply shortage. Ghanaian generating capacity is currently 400-600 megawatts less than Ghana needs.[2] Ghanaian electricity distributors regularly shed load with rolling blackouts.[3]
At the beginning of 2015, the dumsor schedule went from 24 hours with light and 12 without to 12 hours with light and 24 without.[1][4] The long blackouts contrast with the practice in other countries, where blackouts roll rapidly so that no residential area is without power for more than one hour at a time.[5][6]
The re-introduction of dumsor in 2019 without publishing the requisite load shedding schedule came along with the term dumsaa[7] meaning off for a considerably long time or off all the time