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FERC Issues NOPR on Geomagnetic Disturbance Standard -- TPL-007-1
The North American Electric Reliability Corporation is pleased with the Federal Energy Regulatory Commission’s notice of proposed rulemaking on TPL-007-1 – Transmission System Planned Performance for Geomagnetic Disturbance Events.
 
The standard requires entities to conduct initial and ongoing assessments of the potential impact of a 1-in-100 year benchmark geomagnetic disturbance event on bulk power system equipment and the bulk power system as a whole. Additionally, the standard requires corrective action to protect against instability, uncontrolled separation and cascading failures of the bulk power system.
 
FERC also proposed to issue directives for NERC to modify the benchmark geomagnetic disturbance event; to revise the standard to require installation of monitoring equipment; to specify deadlines for corrective action plans; and to submit informational filings after FERC issues a final rule for the standard.
 
In May 2013, FERC directed NERC to develop standards in a two-stage process to address potential risks to reliability caused by geomagnetic disturbances. TPL-007-1 is the second standard of this process. The first standard was EOP-010-1 – Geomagnetic Disturbance Operations, which requires entities to develop and implement operational procedures to mitigate the effects of geomagnetic disturbances on reliable operations. EOP-010-1 became enforceable on April 1, 2015.
 
The electricity sector has made significant progress in reducing potential risks to reliability from geomagnetic storms and appreciates FERC’s actions today. NERC looks forward to our continued work toward assuring the reliability of the North American bulk power system.
 
 
 
Posted On: 05/14/2015

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