How does electricity demand vary over the day and year?
Electricity demand increases during the workday as more businesses, schools and industries open. Over the day the electricity demand increases until midday at which time the load begins to decrease as businesses, industries and schools close for the day. This peak is more dramatic in the summer as temperatures increase with an increasing air conditioning load. In the winter there is a second peak in the evening as people come home and turn on the lights and other appliances.
