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Energy Education Example:


Below, you will find a few definitions along with an illistration of each example using 1 kWh. However, the top one is 1 kWh over a period of time while the bottom one is 1 kWh needed in one hour.


What is Peak Use (demand)?


Peak use (demand) is the maximum ener- gy need for an hour—set by the member— for the utility to reserve a certain capacity of power. KEC must have the capacity ready at all times to meet everyone’s maxi- mum needs during peak hours.


What is Energy Use?


Energy use, also referred to as consump- tion, is the total amount of energy used by the member—usually over a longer period such as a whole month.


Side Note....


Note that in both examples, the energy use is 1 kWh, however, look how differ- ently the second situation impacts the utility from a demand perspective. KEC must now be pre- pared to provide ten times as much ca- pacity in response to the demand of the 10 lightbulbs operating all at once. 443003


10 X 100 watt X 1 hour = X 100 watt Example:


Similarly, ten 100-watt lightbulbs burning for 1 hour consume 1,000 watt-hours or 1kWh.


= 10 hours 1,000


watt-hours or 1kWh


If a 100-watt lightbulb is on for 10 hours, it consumes 1,000 watt-hours. The entire time it's on, it demands 100 watts or .01kW from the utility. That means KEC must have that .01kW ready whenever the member turns on the lamp.


1,000


watt-hours or 1kWh


2


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