May 10, 2018
ESA Comments: Grid Resilience in RTOs and ISOs (AD18-7)
ESA agrees with FERC’s proposed definition of resilience. Flexibility is the fundamental attribute of the electric system that provides both reliability and resilience. Energy storage provides critical flexibility attributes that improve system resilience and reliability.
Our electric system is bound to a simple reality of physics—supply must precisely match demand at every moment, everywhere. If it does not, the result is equipment damage, service disruption, or blackouts. Reliability is the ability to maintain that match of electric supply and demand every moment every day, and to do so in the face of variable, unpredictable, and sometimes extreme system conditions. Resilience, on the other hand, as proposed by FERC, is “the ability to withstand and reduce the magnitude and/or duration of disruptive events, which includes the capability to anticipate, absorb, adapt to, and/or rapidly recover from such an event.” ESA agrees with this definition.
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