Zone

Geographical concept.

Definition by PJM

Source: ¹

PJM Transmission Zones Map (from ¹)

Definition by MATPOWER

Source: ² (p139)

In MATPOWER, there is a bus parameter named "ZONE", and it means loss zone.

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Last modified: 2025-11-02

Related: region · subregions · control-area · balancing-authority-area · reliability-coordinator-area

← Zonal Price

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1. PJM (2023). Transmission Zones Map. https://www.pjm.com/-/media/DotCom/about-pjm/pjm-zones.pdf ↩↩↩

2. Ray D. Zimmerman and Carlos E. Murillo-Sanchez (2020). MATPOWER User's Manual, Version 7.1. https://matpower.org/docs/MATPOWER-manual-7.1.pdf ↩