This initiative combines tariff changes from two separate initiatives, the Effective Flexible Capacity (EFC) Value for Proxy Demand Resources (PDRs) and Slow Demand Response (DR) initiatives. The EFC Value for PDRs initiative reconciled the tariff and business practices for setting PDRs' EFC values. The Slow DR project was initiated after a Busines Practice Manual appeals process, in which the CAISO committed to operationalizing “slow DR” resources (those that cannot fully respond within 20 minutes post-contingency), such that they can be useful as a local Resource Adequacy resource satisfying NERC standards and the CAISO tariff for maximum manual adjustment time of 30 minutes after a first contingency event to prepare the system for a subsequent contingency. This was based on operational experience, as the CAISO determined that its operators need 10 minutes to identify the contingency and assess the problem, identify a solution, and then redispatch the system, which means full resource response must occur within 20 minutes postcontingency. Because slow PDRs cannot respond within 20 minutes post-contingency, the CAISO must dispatch them prior to a contingency (or pre-contingency). to ensure the system can be repositioned within 30 minutes after the potential contingency event.
| Proposal Development | Decision | Implementation | Completed/Closed |
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Apr 28, 2020 Final proposal
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Nov 23, 3030 FERC approval (ER20-2922)
Jul 22, 2020 Board of Governors approval |
Nov 2020
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Completed |
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http://www.caiso.com/Documents/Nov17-2020-Order-Accept-Amendment-AddSettlementRulesforPost-Day-AheadExceptionalDispatchEnergySchedules-ER20-2922.pdf
Nov 17, 2020 Letter Order Accepting Tariff Amendment (ER20-2922) 11/23/2020
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Web meeting |
https://youtu.be/VkpiThJgg0c
Video - Proxy Demand Resource - Resource Adequacy Clarifications - Jun 22, 2020 06/25/2020
Draft Tariff Language - Slow Demand Response 06/10/2020
Stakeholder Comments Matrix - Slow Demand Response - Draft Tariff Language 06/22/2020
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Web meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/EFCTariffClarifications-SlowDRFinalProposal-ProxyDemandResource-ResourceAdequacyClarifications.pdf
https://stakeholdercenter.caiso.com/InitiativeDocuments/Presentation-ProxyDemandResource-ResourceAdequacyClarifications-Apr28-2020.pdf
Presentation - Proxy Demand Resource - Resource Adequacy Clarifications - Apr 28, 2020 04/24/2020
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Web meeting |
https://stakeholdercenter.caiso.com/InitiativeDocuments/IssuePaper-StrawProposal-EffectiveFlexibleCapacityValue-ProxyDemandResources.pdf
Issue Paper and Straw Proposal - Effective Flexible Capacity Value for Proxy Demand Resources 03/27/2020
Presentation - Effective Flexible Capacity Value for Proxy Demand Resources - Apr 3, 2020 04/03/2020
Comments Template - Proxy Demand Resource - Resource Adequacy Clarifications - Apr 3, 2020 04/03/2020
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Related links http://www.caiso.com/StakeholderProcesses/Resource-Adequacy-Enhancements
Resource adequacy enhancements initiative 04/03/2020
Effective flexible capacity ratings process clarification 04/03/2020
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