In its efforts to better manage generation oversupply and solar curtailments, CAISO is going to present the results of the Energy Storage and Distributed Energy (ESDER) Phase 2 initiative to its board in July.

eMotorWerks, together with other energy storage advocates, such as Tesla and Stem, expressed support for the development of a bidirectional Proxy Demand Resource (PRD) product which is based on excess generation.

However, the grid operator will defer the consideration of a PDR product until phase three of ESDER. CAISO needs to analyze the limits of battery resources and other multi-use storage issues.

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