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Load Management Encyclopedia

Load Management Encyclopedia

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Peak Demand

June 25, 2019 By Kristin Aus

     Definitions      Peak Demand
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Peak demand on a electrical grid is simply the highest electrical power demand that has occurred over a specified time period (Gönen 2008). Peak demand is typically characterized as annual, daily or seasonal and has the unit of power. Peak demand, peak load or on-peak are terms used in energy demand management describing a period in which electrical power is expected to be provided for a sustained period at a significantly higher than average supply level. Peak demand fluctuations may occur on daily, monthly, seasonal and yearly cycles. For an electric utility company, the actual point of peak demand is a single half-hour or hourly period which represents the highest point of customer consumption of electricity. At this time there is a combination of office, domestic demand and at some times of the year, the fall of darkness.[1]

Some utilities will charge customers based on their individual peak demand. The highest demand during each month or even a single 15 to 30 minute period of highest use in the previous year may be used to calculate charges.[2]

[1], [2] Originally excerpted from from Wikipedia.org. The full Wikipedia article from June of 2019 can be seen here.

Last updated on July 8, 2019

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