power provided by a power plant or system over and above the firm power

the guaranteed power provided by a power plant or transmission system

purchasing power

A lack of centralised political authority, especially following a conflict, revolution, change of power, etc.

Transport and harnessing of energy by ocean surface waves.

plural of power loom

(roller derby) A period during which only one jammer is on the track.

(idiomatic) To be installed in high office, for example as a king, president, or prime minister.

(politics, government) A situation of equilibrium in which no country is powerful enough to control, or threaten the interests of, the others.

(politics, government) balance of power