NERC Terms

Adjacent Balancing Authority CORRECT ANSWER A Balancing Authority whose Balancing Authority Area is interconnected with another Balancing Authority Area either directly or via a multi-party agreement or transmission tariff. After the Fact CORRECT ANSWER A time classification assigned to an RFI when the submittal time is greater than one hour after the start time of the RFI. Area Control Error (ACE) CORRECT ANSWER The instantaneous difference between a Balancing Authority's net actual and scheduled interchange, taking into account the effects of Frequency Bias, correction for meter error, and Automatic Time Error Correction (ATEC), if operating in the ATEC mode. ATEC is only applicable to Balancing Authorities in the Western Interconnection. Arranged Interchange CORRECT ANSWER The state where a Request for Interchange (initial or revised) has been submitted for approval. Automatic Generation Control CORRECT ANSWER Equipment that automatically adjusts generation in a Balancing Authority Area from a central location to maintain the Balancing Authority's interchange schedule plus Frequency Bias. AGC may also accommodate automatic inadvertent payback and time error correction. Balancing Authority (BA) CORRECT ANSWER The collection of generation, transmission, and loads within the metered boundaries of the Balancing Auth