Bulk Electric System

BES. Transmission Elements and Power resources 100 kV or higher.

Definition by NERC

Source: ¹

Unless modified by the lists shown below, all Transmission Elements operated at 100 kV or higher and Real Power and Reactive Power resources connected at 100 kV or higher. This does not include facilities used in the local distribution of electric energy.

More details of inclusion and exclusion can be found in the source document.

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Last modified: 2025-06-20

← Black Start · Bulk Power System →

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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 ↩