CAISO Urges Flexibility and Coordination to Advance Distributed Energy Resource Aggregations at FERC
By Buck B. Endemann, William M. Keyser, and Molly Suda
As previously covered by this blog, on November 17, 2016, the Federal Energy Regulatory Commission (“FERC”) issued a Notice of Proposed Rulemaking (“NOPR”) to remove barriers so that electric storage resources and distributed energy resource aggregations can better participate in the capacity, energy, and ancillary services markets operated by Regional Transmission organizations (“RTOs”) and independent system operators (“ISOs”). This post will focus on the response to those proposals submitted by the California Independent System Operator (“CAISO”), particularly as they relate to distributed energy resource aggregations.
FERC defines distributed energy resource aggregators as entities that aggregate one or more distributed energy resources, such as electric storage resources, distributed generation, thermal storage, and electric vehicles (collectively, “DERs”), and offer those resources into wholesale markets. The NOPR called for comments on what types of market rules should be established to provide DERs with more certainty and to remove barriers to entry.
The California Independent System Operator (“CAISO”) is one of the largest ISOs in the nation, responsible for managing about 80 percent of California’s electricity flow. Having recently received FERC approval of its own DER aggregation participation model, CAISO has a head start on incorporating DER aggregations into its energy and ancillary services markets. In fact, in a statement issued concurrently with the NOPR, Acting FERC Chairman Cheryl LaFleur specifically identified CAISO’s DER aggregation rules as a model to study and evaluate any lessons learned from CAISO’s implementation of those rules.
CAISO submitted its comments on FERC’s proposal on February 13, 2017. With its recent experience in developing a DER program, CAISO’s comments offer insights that may guide FERC as it works toward a final rule. Overall, CAISO’s comments strongly support incorporating DER aggregations into the nation’s energy and ancillary services markets, so long as each RTO/ISO is given the flexibility to develop participation models that reflect regional and regulatory preferences in generation, transmission, and distribution assets. CAISO also predicts that the roles and responsibilities of transmission and distribution operators will experience significant change in the coming years, and that FERC, electric grid operators, and market participants can best encourage innovation and resiliency by avoiding any overly-prescriptive models that stifle DER participation.