​2016-2017 Transmission planning process

The California ISO 2016-2017 transmission planning cycle involves key stakeholder activities from 2016 through early 2017. Each year, the ISO conducts its transmission planning process to identify potential system limitations as well as opportunities for system reinforcements that improve reliability and efficiency. The transmission planning process core product is the ISO Transmission Plan, which provides an evaluation of the ISO control grid, examines conventional grid reliability requirements and projects, summarizes key collaborative activities and provides details on key study areas and associated findings. 

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​Supplemental special studies

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• 

  Supplemental Sensitivity Analysis - Risks of Early Economic Retirement of Gas Fleet1/05/2018 12:51
• 

  Supplemental Sensitivity Analysis - Benefits Analysis of Large Energy Storage1/05/2018 12:51
• 

  Interregional Transmission Project (ITP) Evaluation and 50% RPS Out-of-State Portfolio Assessment1/05/2018 12:51

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Board-approved plan

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• 

  Board-Approved - 2016-2017 Transmission Plan3/20/2017 14:23
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  Appendix A - Board Approved - 2016-2017 Transmission Plan3/20/2017 14:23
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  Appendix C - Board Approved - 2016-2017 Transmission Plan3/20/2017 14:23
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  Appendix D - Board Approved - 2016-2017 Transmission Plan3/20/2017 14:23
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  Appendix E - Board Approved - 2016-2017 Transmission Plan3/20/2017 14:23
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  Appendix F - Board Approved - 2016-2017 Transmission Plan3/20/2017 14:23
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  Appendix G - Board Approved - 2016-2017 Transmission Plan3/20/2017 14:23

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Phase 2 - conduct technical studies and develop comprehensive plan

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• 2016-2017 transmission planning process - board-approved plan and appendices
  Appendix B is available on Market Participant Portal
• 2016-2017 transmission planning process - revised draft plan and appendices
  Appendix B is available on Market Participant Portal
• 2016-2017 transmission planning process - draft plan and appendices
  Appendix B is available on Market Participant Portal

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• Meeting Nov 16, 2016
  Planning process meeting to discuss preliminary policy and economic assessments, and Transmission Economic Assessment Methodology (TEAM).

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Reliability assessment

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• 

  2016-2017 Final Reliability Assessment Results11/02/2016 13:15
• 

  2016-2017 Preliminary Reliability Assessment Results8/15/2016 15:45
• Meeting Sep 21-22, 2016

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Conceptual statewide plan

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• 

  Draft 2015-2016 Conceptual Statewide Transmission Plan Update for the 2016-2017 Transmission Planning Cycle9/02/2016 10:58

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Special studies

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• 50% Renewable portfolio standard special study
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    Interregional Transmission Project Evaluation and 50% RPS Out-of-State Portfolio Assessment Study Plan7/14/2017 15:57
  • Stakeholder comments (unsolicited)
  • Joint CPUC-ISO web conference - 50% RPS special study - Jun 20, 2016

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• Other special studies
  • Web conference Jun 13, 2016

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• Characteristics of slow response local capacity resources
  • 

    Final Study Plan - Characteristics of Slow Response Local Capacity Resources5/13/2016 14:54
  • Joint ISO-CPUC workshop Oct 4, 2017
  • Joint ISO-CPUC workshop Oct 3, 2016
  • Meeting Apr 26, 2016

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• Meeting - 2016-2017 plan update - Feb 28, 2017
  • 

    Agenda - 2016-2017 Transmission Plan Update; 2017-2018 Transmission Planning Process Draft Study Plan2/24/2017 15:42
  • 

    Presentation - 2016-2017 Transmission Plan Update2/27/2017 16:01

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Phase 1 - develop study plan  

In collaboration with stakeholders, the ISO develops and finalizes a study plan that consists of a common set of assumptions for reliability and other planning studies the ISO will perform in Phase 2. The development of a conceptual statewide transmission plan begins in this phase and may be completed during Phase 1 or Phase 2. Stakeholders may also request economic planning studies to assess potential economic benefits (such as congestion relief) in specific areas of the grid.

Study plan

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• 2016-2017 transmission planning process - study plan
  • 

    Final 2016-2017 Study Plan3/31/2016 15:09
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    Draft 2016-2017 Study Plan2/22/2016 16:15
  • Meeting - draft study plan - Feb 29, 2016
  • Comments on meeting - draft study plan - Feb 29, 2016
• 2016-2017 transmission planning process - renewable portfolios
  • 

    2016-2017 Renewable Portfolios Transmittal Letter11/15/2016 11:03

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