2013-2014 Transmission planning process

The California ISO 2013-2014 transmission planning cycle involves key stakeholder activities from 2013 through early 2014. 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.

Process status

Board of Governors approval: March 20, 2014
Comprehensive plan: Completed
Study plan: Completed

Board-approved plan

Appendix B and Appendix D are available on Market Participant Portal

Board-Approved 2013-2014 Transmission Plan Jul 16, 20148/01/2014 16:43
Appendix A - Board-Approved 2013-2014 Transmission Plan Jul 16, 20148/01/2014 16:43
Appendix C - Board-Approved 2013-2014 Transmission Plan Jul 16, 20148/01/2014 16:43
Appendix E - Board-Approved 2013-2014 Transmission Plan Jul 16, 20148/01/2014 16:43
Appendix F - Board-Approved 2013-2014 Transmission Plan Jul 16, 20148/01/2014 16:43
Locational effectiveness factor calculations

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Phase 3 - select project sponsor

Project sponsors submit proposals for transmission solutions that are eligible for competitive solicitation and were approved by the ISO Board in the comprehensive transmission plan at the end of phase 2.

Competitive solicitation

Revised Summary of Substation Accrued Project Sponsor Costs9/14/2015 14:38
2013-2014 Transmission Planning Process Phase 3 Sequence Schedule Revised Feb 26, 20152/27/2015 14:24
Project Sponsor Question and Answer Matrix R57/28/2014 16:54
Presentation - 2013-2014 Transmission Planning Process Phase 3 Competitive Solicitation5/02/2014 08:38
Key Selection Factors5/01/2014 12:58
Suncrest 230 kV 300 MVAr dynamic reactive power support
Delaney to Colorado River 500 kV transmission line project
Estrella substation project
Harry Allen to Eldorado 500 kV transmission line project
Miguel 500 kV 375 MVAr reactive power support
Spring substation in the Morgan Hill area
Wheeler Ridge Junction substation project
Lessons learned meeting Mar 6, 2014

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Phase 2 - conduct technical studies and develop comprehensive plan

The ISO performs technical studies, and with stakeholders develops an annual comprehensive transmission plan that examines the ISO controlled grid and reliability requirements and identifies mitigation solutions. Transmission mitigation solutions may meet reliability, economic or public policy-driven needs that support state, federal, municipal and county policy requirements and directives.

Harry Allen - Eldorado 500 kV transmission project

2013-2014 transmission plan

2013-2014 transmission planning process - board-approved plan and appendices Jul 2014
Appendix B and Appendix D are available on Market Participant Portal
2013-2014 transmission planning process - board-approved plan and appendices
Appendix B and Appendix D are available on Market Participant Portal
2013-2014 transmission planning process - revised draft plan and appendices
Appendix B and Appendix D are available on Market Participant Portal
2013-2014 transmission planning process - draft plan and appendices
Appendix B and Appendix D are available on Market Participant Portal

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Policy-driven and economic assessment

Comments on preliminary policy-driven and economic assessment
Meetings Nov 20-21, 2013

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Conceptual statewide plan

Comments on 2013-2014 conceptual statewide plan

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2013-2014 Eligible generator interconnection procedures network upgrades

Consideration of alternatives

Reliability assessment

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.