Definitions for "Peak demand"
The amount of power necessary to supply customers at the point of maximum demand.
The maximum level of demand for electrical service in a building during a given interval (usually fifteen to sixty minutes).
The maximum momentary load placed on a water or wastewater plant or pumping station or on an electric generating plant or system. This is usually the maximum average load in one hour or less, but may be specified as instantaneous or for some other short time period.