Demand

The amount of electricity that a customer takes from the system at a certain time. Demand is often measured in kilowatts and is usually grouped in the following categories:

• average: the demand determined by dividing the total number of kilowatthours by the hours in the time interval,
• coincident: a customer or class demand at the time of a utility system's peak demand,
• Maximum or peak: the greatest of all demands occuring during a specified time period.

Source: UIE Guide to Electric Load Management in Industry