Home Stakeholder Engagement Issue Tracking Resource Availability and Need (RAN) - Resource Accreditation

Issue Tracking Details

Resource Availability and Need (RAN) - Resource Accreditation RASC010

Last Modified - 10/18/2021
2020 2021 2022 2023
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4

Address gaps in resource accreditation to incentivize resources to be available during times of need.

This issue is inclusive of the 2020 RASC High Priorities and IMM State-of-the-Market Recommendations::

  • More effective outage rate accreditation
  • Create accreditation which incents desired performance
  • Forward capacity accreditation for renewable (IR095) and use-limited (IR096) resources
  • Seasonal/monthly outage modeling
  • Expand the use of diversity contracts
  • Solar capacity credit
  • Hybrid capacity accreditation
  • IMM 2017-7
  • IMM 2018-5

 This issue was identified in 2018 as a Phase 2 issue of Resource Availability and Need (IR025) and was redefined ahead of the 2021 Integrated Roadmap Work Plan prioritization in an effort to further break out RAN projects.



Next Update








Integrated Roadmap


Advisory Committee Priority

Design & implement best practices planning
Preserve & enhance reliability
Improve market efficiency
Assure resource adequacy



Continued RASC discussion to review RA construct reforms. Stakeholders were invited to continue submitting questions on the proposal, transitional mechanisms, or draft reforms by October 13.


Special RASC meeting held to continue discussing the proposed RA construct and adjustments to the planned filing date. Stakeholders were invited to submit questions on the existing construct proposal via the Feedback Tool through September 29.


Special workshop held to review RA construct draft tariff language.


MISO presented final changes to RA proposal based on stakeholder input and furthered analysis. Feedback requested on proposed transition, capacity replacement, and must offer obligation calculation. Due date extended to August 23 to allow further discussion in a dedicated workshop.


Revised RA reforms presented based on stakeholder input and furthered analysis. Feedback requested on sub-annual construct design elements by July 21.


MISO discussed informal stakeholder feedback and design considerations for proposed resource adequacy reforms, as well as the Minimum Capacity Requirement (MCR). Stakeholders were asked to provide feedback on the proposed MCR de minimis threshold and penalty assessment by June 23. Also presented for feedback was draft Hybrid Accreditation BPM language and a question of whether a surplus unit enters as Phase I or II. Refer to posted presentation and feedback request for additional detail.


MISO responded to stakeholder feedback on the accreditation proposal, discussed recommended changes, and next steps. MISO also introduced a minimum capacity requirement concept and later asked for feedback by May 28, 2021. Detailed responses to stakeholder feedback provided in a supplemental document with meeting materials. Additionally, MISO presented a revised hybrid accreditation approach and sought feedback by March 26.


MISO responded to stakeholder feedback on ACAP accreditation, discussed merits of the proposal considering recent extreme weather, and next steps. Filing timeline extended to September 2021. Also discussed was an updated hybrid accreditation proposal based on stakeholder feedback.


RASC review of detailed conceptual design scope of resource adequacy construct changes and next steps. Stakeholder feedback requested on proposed options of construct design elements by March 24. Also discussed hybrid resource accreditation details and questions for feedback by March 24.


RASC review of stakeholder feedback, discussed refined proposal of resource adequacy construct changes. Examples and initial sample results were provided. Next steps are to begin the conceptual design phase of the proposed construct and continue high-fidelity analysis to develop and refine detailed design elements.


RASC review of stakeholder feedback, discussed initial proposal of resource adequacy construct changes and next steps. Stakeholders encouraged to respond to the feedback request open through January 20.


RASC continued discussion of additional qualitative and quantitative analysis results of construct options and next steps. Stakeholders encouraged to respond to the feedback request open through December 11.


RASC continued discussion of initial qualitative and quantitative analysis results presented at the October 26 RAN workshop. Stakeholders encouraged to respond to the feedback request open through November 11.


MISO hosted a RAN Workshop to review further stakeholder feedback on construct options for evaluation, discuss initial qualitative and quantitative analysis results, and next steps. Review to continue in the November 4 RASC meeting. Feedback was requested by November 11.


RASC presentation to review feedback on priority of construct options for evaluation. MISO presented construct options, refined priorities and next steps, and reviewed additional outage data requested by stakeholders, provided impacts of RAN Phase 1, and discussed potential options to improve availability. Feedback requested by October 16 on construct options and RA hour selection methodology.


(Agenda Item 03bi) MISO provided additional supporting evidence to the problem statement and posted a supplemental Q & A document addressing questions from the last meeting. (Agenda Item 03c) MISO also presented recommendations on how to address Surplus Interconnection requests in the upcoming PRA, e.g. accreditation capacity for the underlying resources. Feedback requested on accreditation methods by September 23. (Agenda Item 03a) For issues RASC010, 011, and 012 MISO presented a summary of feedback received on draft evaluation options, input assumptions and scenarios for evaluation as well as revised scenarios. Feedback requested by September 23 on priority of options to evaluate.


MISO reviewed feedback from the last meeting (RASC010, RASC011, RASC012). Feedback requested on proposed criteria for evaluation, evaluation overview, and next steps. Transitioned to Evaluation phase.


Overview presentations from MISO and The Brattle Group on RAN Reliability Requirements (RASC010, RASC011, RASC012) including review of stakeholder feedback and a revised problem statement.


(RASC010) Resource accreditation problem statement feedback was presented along with a revised problem statement. A new feedback request was opened through June 24 on additional analysis and evidence stakeholders would like to see, as well as brainstorming ideas for how to investigate the gaps between planning and operations. (RASC010, RASC011, RASC012) MISO and The Brattle Group presented draft framing, discussed preliminary analysis results, and reviewed industry trends and benchmarks. Feedback from this presentation also requested through June 24.


Ranked High for the 2021 Integrated Roadmap Work Plan. Framing and Evaluation work will continue at the RASC and in RAN workshops throughout 2020 in anticipation of a FERC filing in Q2 2021.


Updated the issue description to include additional issue components. Also deleted the previous issue description from 2019, which stated: Develop a holistic solution that provides sufficient granularity for energy needs to facilitate efficient conversion of committed capacity to energy to serve load for all hours of the year. The recommended approach is to build off of RAN Phases 1 & 2 and evaluate a seasonal resource adequacy construct and implement if necessary. In parallel, work with the Market Subcommittee’s Phase 3 assignment to improve market incentives for resource availability to meet daily and variable energy needs.


Updated the timeline to add additional phases beyond Frame and Evaluate in 2020. The timeline now includes an anticipated Implementation in Q1 2022.


(RASC010) MISO presented a resource accreditation problem statement and scope of near term resource accreditation improvement. Stakeholder feedback was requested. (RASC010, RASC011, RASC012) MISO and The Brattle Group presented approach to identifying reliability needs, reviewed industry benchmarks, and discussed preliminary analysis results.


Reviewed RAN 2020 and 2021 focus, including RASC010.


The title of this issue has been changed from, "Resource Availability and Need (RAN) Seasonal Resource Adequacy (Phase 3)" to "Resource Availability and Need (RAN) - Resource Accreditation" as part of separating RAN into its component parts ahead of the 2021 IR Work Plan prioritization cycle.


MISO presented highlighted gaps in the current LMR accreditation and LOLE modeling and proposed strawman proposals. Due to the relationship between capacity accreditation and seasonal resource adequacy, the near term focus shifted to smaller, incremental improvements. MISO anticipates a March/April 2020 FERC filing on LMR accreditation. Offer based accreditation and seasonal resource adequacy discussion will continue at the February RASC meeting.


MISO discussed LOLE modeling and reviewed the initial capacity accreditation results. Continued analysis is underway to determine quantitative impacts to both accreditation and LOLE. A more robust analysis will be provided in the January RASC meeting. MISO is tentatively targeting a March 2020 filing for accreditation.


MISO reviewed two categories [(1) General (2) Accreditation Options] of feedback from the August RASC meeting and discussed in greater detail the various accreditation options. MISO will perform analysis on two of the discussed accreditation options and share results from the initial analysis at the November RASC meeting. MISO is moving towards a March 2020 filing for accreditation.


MISO reviewed stakeholder feedback from the July RASC meeting where most supported additional analysis and discussion on a seasonal resource adequacy construct. MISO planned to look at accreditation and LOLE modeling under both a seasonal and conventional construct. Evaluation and analysis of capacity accreditation and LOLE assumptions will begin in September upon completion of the annual LOLE study.


MISO reviewed stakeholder feedback from the May RASC meeting around capacity accreditation and LOLE analysis. MISO shared results from several LOLE sensitivities showing LOLE risks. The capacity accreditation discussions were kicked off by reviewing the current accreditation methodologies for all resource types.


MISO reviewed the high level potential benefits of a seasonal resource adequacy construct and shared some of the questions that would need to be answered in order to determine the costs to achieve a seasonal construct. MISO shared with stakeholders the analysis and data that is currently available and future analysis that MISO plans on performing. MISO walked through the design framework topics and shared a draft work plan for RAN Phase 3.


MISO continued the RAN Phase 3 discussions on Seasonal Resource Adequacy. MISO shared a hypothesis that a seasonal resource adequacy constructs benefits outweigh the trade-offs. MISO discussed some of the benefits and trade-offs of a seasonal resource construct and facilitated discussions among stakeholders.


MISO summarized the feedback from the February RASC meeting and provided an updated draft work plan. Design framework and questions will be discussed in future RASC meetings. MISO will continue to update the work plan with more details as they become available and provide to the RASC for feedback. MISO also provided stakeholders a history of previous Seasonal Resource Adequacy discussions and previous proposals. MISO facilitated stakeholder discussion related to a seasonal resource Adequacy construct.


MISO summarized stakeholder feedback form the January RASC meeting related to RAN Phase 3. MISO kicked-off Phase 3 Seasonal Resource Adequacy discussions and requested feedback on key questions related to Seasonal Resource Adequacy.


MISO summarized stakeholder feedback on specific Phase 2/3 questions and solution prioritization. MISO provided stakeholders with initial set of Phase 2 solution prioritization and provided draft work plan. MISO will initiate Phase 3 seasonal resource adequacy discussions at the March RASC meeting.


The Steering Committee (SC) formerly assigned Resource Availability and Need (RAN) Seasonal Resource Adequacy as an issue to the RASC on November 15, 2018. MISO will continue discussion with stakeholders and provide a draft work plan at the January 2019 RASC meeting.