Operating Reserve – Supplemental

Generation or load available to serve load within the Disturbance Recovery Period.

Definition by NERC

Source: ¹

The portion of Operating Reserve consisting of:

• Generation (synchronized or capable of being synchronized to the system) that is fully available to serve load within the Disturbance Recovery Period following the contingency event; or
• Load fully removable from the system within the Disturbance Recovery Period following the contingency event.

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Last modified: 2025-06-18

← Operating Reserve – Spinning · Oscillation →

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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 ↩