Electricity usage pattern on the Thanksgiving Day, the fourth Thursday of November every year, is unlike other normal weekdays as demand peaks in the late morning when families prepare meals and gather to celebrate the holiday, according to a Nov. 20 report from the Energy Information Administration. Overall electricity demand on Thanksgiving Day tends to be lower as most businesses are closed. On a typical November weekday, electricity usage shows a morning peak reflecting the timing of waking up and going to work, and a slightly higher evening peak to meet lighting and space heating demands. Black Friday’s electricity usage resembles that of weekend days, when total electricity demand is typically lower than on a regular weekday. The agency attributes differences in Thanksgiving power demand over the past years to weather patterns. For this year’s Thanksgiving week, the agency expects heating degree days to be 24 percent higher than last year, when the Lower 48 states’ heating degree days ranged from 15 to 20, implying a temperature range of 45 to 50 degrees Fahrenheit.