It blamed the cuts on "the inability of power plants to meet increased demand" during peak hours amid "a rise in temperatures compared to the same period in previous years."
On Thursday, the ministry published a schedule of expected cuts across several parts of the country, after urging residents to ration consumption to ease the load on power plants.
Kuwait, one of the largest crude producers in the Organization of the Petroleum Exporting Countries (OPEC), is considered one of the world's hottest desert countries.