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NERC Revising “Bulk Electric System” Definition and Related Exception Procedure

It’s been nearly a year since the Federal Energy Regulatory Commission (FERC) issued Order 743 (on November 18, 2010) directing the North American Electric Reliability Corporation (NERC) to revise the definition of the Bulk Electric System (BES).  That definition for many years had been:

As defined by the Regional Reliability Organization, the electrical generation resources, transmission lines, interconnections with neighboring systems, and associated equipment, generally operated at voltages of 100 kV or higher. Radial transmission facilities serving only load with one transmission source are generally not included in this definition.

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