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Today’s LiveWire Spotlight examines NERC’s second annual Frequency Response Filing with FERC. In it, NERC analyzes the calculation of Interconnection Frequency Response Obligation (IFRO) in the East, ERCOT, WECC, and Quebec to determine if sufficient reserves are available to offset large unexpected transients in power balance.

Earlier this month, BAL-003-1 R2-R4 took effect in the USA and R1 will follow on 4/1/2016. The annual evaluation of interconnection frequency response will continue until the Commission is convinced that the tuning process is solid.