INITIATIVE:
Proxy demand resource - resource adequacy clarifications

Started: Mar 27, 2020

Leads
Jill Powers

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.

Status

Proposal Development Decision Implementation Completed/Closed
Apr 28, 2020 Final proposal
Nov 23, 3030 FERC approval (ER20-2922)
Jul 22, 2020 Board of Governors approval
Nov 2020
Implementation milestones
Completed

Activities


Web meeting


Draft Tariff Language - Slow Demand Response
Proposed language for this initiative's slow demand response final proposal that requires ISO Board of Governors approval

Stakeholder Comments Matrix - Slow Demand Response - Draft Tariff Language

Web meeting


Effective Flexible Capacity Tariff Clarifications and Slow Demand Response Final Proposal - Proxy Demand Resource - Resource Adequacy Clarifications

Presentation - Proxy Demand Resource - Resource Adequacy Clarifications - Apr 28, 2020

Web meeting


Issue Paper and Straw Proposal - Effective Flexible Capacity Value for Proxy Demand Resources

Presentation - Effective Flexible Capacity Value for Proxy Demand Resources - Apr 3, 2020

Comments Template - Proxy Demand Resource - Resource Adequacy Clarifications - Apr 3, 2020


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