In a statement on Saturday, the EEHC asked the public not to use elevators during this 20-minute window of time in order to ensure their safety.
The company stressed that any interruptions in power would last no longer than one hour.
On Wednesday, Prime Minister Mostafa Madbouly said recent power outages were caused by increased consumption triggered by the intense heatwave the country has been witnessing.
Increased electricity demand has strained the country's natural gas network which supplies the power plants, Madbouly explained.
“We are currently implementing a temporary load reduction to reduce pressure on the country's gas network,” the prime minister said during the weekly cabinet meeting.
In the meeting, Madbouly added that "the load reductions will continue until the middle of next week."
On Sunday, the Ministry of Electricity and Renewable Energy confirmed that national electricity consumption had reached record levels.
For several days now, temperatures in Egypt neared 40 degrees Celsius in most of the country, reaching a sizzling 45 in the deep south.
Meanwhile, record temperatures around the globe have ignited forest and other wild fires across more than one continent, forcing governments to evacuate thousands of citizens.