The diversity of applications of electricity and particularly the fact that some of its uses, such as lighting and space heating, are subject to substantial seasonal variation makes the economic ideal of supply for constant consumption throughout the year unrealistic. There should be an intermediate unit between producer and customer that can coordinate them. This intermediate unit therefore has to be able to separate partly or completely the processes of energy generation and consumption in the power system. Secondary energy storage in a power system is any installation or method, usually subject to independent control, with the help of which it is possible to store energy, generated in the power system, keep it stored and use it in the power system when necessary.

Inspec keywords: energy management systems; power generation economics; energy storage; power consumption; electricity supply industry

Other keywords: constant electricity consumption; secondary energy storage; energy consumption; electricity applications; energy generation; electricity supply industry; power system structural unit

Subjects: Power system management, operation and economics