Updated CC 6470 Real Time Instructed Imbalance Energy Settlement to align with ISO commitment to operationalizing “slow DR” such that they can be useful as a local RA resource. “Slow” demand response resources are those that cannot fully respond within 20 minutes post-contingency. NERC standards and the ISO tariff specify a maximum manual adjustment time of 30 minutes after a first contingency event for the ISO to prepare the system for a subsequent contingency. Based on operational experience, the ISO has determined that ISO 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 post-contingency. Because slow Proxy Demand Resources (PDRs) cannot respond within 20 minutes post-contingency, the ISO must dispatch them prior to a contingency, i.e. pre-contingency, to ensure the system can be repositioned within 30 minutes after the potential contingency event.
CC 6470 Real Time Instructed Imbalance Energy Settlement to include the business rules that account for this dispatch using the NonTModel Exceptional Dispatch Type, which result to a document only change and utilizing current active settlement configuration
11/17/2020 update
The effective date of the change is 12/16/2020 and the anticipated implementation date is 12/16/2020.