What is demand?
A. Demand is the rate at which electricity is used during a thirty minute period. As you turn on more lights, appliances and electric heating equipment, you are increasing your individual electric demand (Rate-of-Use). Demand rates are offered to encourage customers to “level out” their rate of use. By controlling your demand, you are contributing to the efficiency of the electric system and saving both the consumer and the power company money. During the month, a Demand/Energy meter records the total Energy used, along with the highest 30 minute demand measured in kilowatts (kW), with one kilowatt equal to 1,000 watts. For example, if you have ten 100-watt light bulbs on at one time, the demand is 1,000 watts or 1 kilowatt (kW). If they remain on for one hour, the Energy used is one kilowatt-hour (kWh). After recording the 30-minute peak use demand, the meter reader resets the demand indicator on the meter to zero to start a new billing period. Q. How Does The Demand Rate Work? A.The
The cost of supplying electric service not only depends on the amount of energy (kWh or kilowatt-hours) consumed, but also on the power requirement of a facility, known as electric demand. Electric demand is the maximum amount of electricity used at any single point in time by a facility. Demand is measured in kilowatts (kWh) by an electric demand meter. The highest level of electric demand during a billing month is called the peak demand. RPU must be able to meet the peak coincident demand of all our customers with our existing generation, transmission and distribution facilities. The higher the overall peak demand on an electric system, the more generating capacity and equipment is required. Figure 1 shows a typical system demand profile for a peak day in summer. Electric demand is usually greatest during the period from 10am to 10pm. Demand Charges recover a portion of the cost of providing the generating capacity and equipment needed to serve our customer’s peak electrical demand.
A. Demand is the rate at which electricity is used during a thirty minute period. As you turn on more lights, appliances and electric heating equipment, you are increasing your individual electric demand (Rate-of-Use). Demand rates are offered to encourage customers to “level out” their rate of use. By controlling your demand, you are contributing to the efficiency of the electric system and saving both the consumer and the power company money. During the month, a Demand/Energy meter records the total Energy used, along with the highest 30 minute demand measured in kilowatts (kW), with one kilowatt equal to 1,000 watts. For example, if you have ten 100-watt light bulbs on at one time, the demand is 1,000 watts or 1 kilowatt (kW). If they remain on for one hour, the Energy used is one kilowatt-hour (kWh). After recording the 30-minute peak use demand, the meter reader resets the demand indicator on the meter to zero to start a new billing period.
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