As part of an ongoing effort to address issues raised by, and encourage the entry of, distributed energy resources, the Federal Energy Regulatory Commission (FERC) last week issued a Policy Statement clarifying the flexibility electric storage resources have regarding rate designs to recover their costs.  FERC earlier proposed rules to remove barriers to the participation of storage and other distributed resources in the organized wholesale electricity markets administered by Regional Transmission Organizations (RTOs).  These policies and rules are of interest to storage operators and investors, grid managers, other participants in RTO markets and consumers of storage services.

Storage resources, such as large-scale batteries and flywheels, are able to both absorb and discharge electricity.  These resources can provide multiple services almost instantaneously and thus may fit into more than one of the traditional asset functions of generation, transmission, and distribution.  The Policy Statement provides guidance for storage resources that want to charge rates for providing multiple types of services.
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