Daily Energy Demand

According to the article in the references, the daily energy demand of a given region is equal to:

Daily Energy Demand (KiloWatt-Hours) = (Power Rating (W) * Number Per Household * Hours Use Per Day * Number of Households) / 1,000

The hours per day are 24 hours because most houses use power 24 hours per day. At night, households could charge their phones, run their fridges, or use air conditioning.