Available Power

available power

[ə′vāl·ə·bəl ′pau̇·ər]
The power which a linear source of energy is capable of delivering into its conjugate impedance.

Available Power


in an electric power system, the portion of the total system power that can be used by a dispatcher to meet the system’s loads (power demand). The amount of available power is defined as the total power of the system’s generators minus the power of the generators undergoing repair. Ordinarily, the available power is greater than the demand; the difference between the two values constitutes the reserve that is used to meet sudden load peaks.

In the normal operation of an electric power system, the available power must not be less than the demand at any given moment. If this condition is violated, a power deficit develops in the system that can lead to a lower quality of electric power in the form of a change in the frequency and voltage. In the most severe cases, damage may occur. A deficit can be met by using power supplied over power transmission lines from other systems. If the available power is to be utilized completely, the power transmission lines and the elements of the electrical network should have adequate transmission capability.


Lapitskii, V. I. Organizalsiia i planirovanie energetiki. Moscow, 1967.
Markovich, I. M. Rezhimy elektricheskikh sistem, 4th ed. Moscow, 1969.


References in periodicals archive ?
The rate of available power reserve, which excludes power plants needing repairs or check-ups, also hit record-high 10.
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Hence, this [interconnection] will help address the insufficient power supply and optimize the available power supply in the Philippine grid.
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According to PRO, SEPCO, Manzoor Hussain Soomro, the company authorities have further asked to minimize the load shedding through efficient utilization of available power capacity and better implementation of the plan during Eid holidays.
Power is one of the main drivers of sustainable economic growth, available power supply determines the level of production which a country is capable of supporting.
But mild windy weather, high levels of electricity imports from the continent and greater than expected levels of available power plants meant the capacity margin was "adequate", and extra help to meet demand was not needed, the report said.
Because of that, the generation of the maximum available power is not guaranteed under all electrical loads.
has introduced the BENCH range of economical programmable power supplies--compact, remote-controllable, single-output DC power supplies with available power output up to 600 W.

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