PERCENT SYSTEM'S LOSS FORMULA

How to determine the electric utility's overall power system's loss?

Solving for an Electric Utility's Overall system's loss can be easier than you can think of. Distribution Utilities computes their over all Percent System's loss in a very simple manner. The result of this computation serves as a signal on how the company is doing with respect to minimizing their energy losses and how are they performing.

Percent Systems Loss is simply the ratio between all unaccounted energy to the purchased energy. Unaccounted energy is the difference between purchased energy minus the sold energy and company use. Let us define each of these terms.

ENERGY PURCHASED/GENERATED - is the energy(kWhr) delivered from generation and transmission companies. It is the energy which is bought by the distribution utility to be use by its customers.

ENERGY SOLD - is the billed energy(kWhr) from all the distribution utility's customers (residential, commercial, industrial) during the same period where the purchased energy was taken.

COMPANY USE - this includes energy(kWhr) consumption of the company mostly from its station power, pumps, lightings and other consumptions that is necessary for their operation.

Companies use energy in computing their system's loss simply because it is easier this way compared to using the actual demand.

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