Frequency Response

The ability of a system to react to a change in system frequency.

Definition by NERC

Source: ¹

(Equipment) The ability of a system or elements of the system to react or respond to a change in system frequency.

(System) The sum of the change in demand, plus the change in generation, divided by the change in frequency, expressed in megawatts per 0.1 Hertz (MW/0.1 Hz).

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Last modified: 2025-06-22

Related: primary-control

← Frequency Regulation · Frequency Response Measure →

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1. NERC (2025). Glossary of Terms Used in NERC Reliability Standards. https://www.nerc.com/pa/Stand/Glossary%20of%20Terms/Glossary_of_Terms.pdf ↩