Today’s LiveWire Spotlight looks at NERC’s third annual technical study of the Interconnection Frequency Response Obligation (IFRO) in the East, ERCOT, WECC, and Quebec. The latest evaluation has found subtle variations in the actual waveform data used to derive IFRO that allows most Interconnections to reduce their frequency support resources.

By February 10, the ERO Enterprise will assign annual Frequency Response Obligations to every registered Balancing Authority. New Frequency Bias Settings and L10 values must be established by early April.