Search

Home
Stay Informed
Recurring Processes
2022-2023 Transmission planning process

2022-2023 Transmission planning process

Started: Jan 13, 2022

Leads
Jeff Billinton

The California ISO 2022-2023 transmission planning cycle involves key stakeholder activities from 2022 through early 2023. 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.

Relevant notices Contact us

Status

Development	Decision	Implementation	Completed/Closed
Jun 30, 2023 Final study plan posting	May 18, 2023 Board of Governors approval - transmission plan

Activities

Web meeting	Presentation - 2022-2023 Transmission Planning Process - Nov 7,2023 11/03/2023 Idaho Power Letter to CAISO Regarding SWIP North 11/03/2023	View comments Comments
	Validated project sponsor applications List of Validated Project Sponsor Applications - North Gila to Imperial Valley 2 500kV Transmission Line Project 11/20/2023 List of Validated Project Sponsor Applications - North of SONGS to Imperial Valley 500kV Substation and Transmission Line Project 12/05/2023	Comments
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.	Comments
Web meeting	Competitive Solicitation Cost and Cost Containment Workbook - 2022-2023 Transmission Planning Process Phase 3 10/10/2023 ISO Responses to Comments Matrix - 2022-2023 Transmission Planning Process Competitive Solicitation 10/10/2023 Key Selection Factors - 2022-2023 Transmission Planning Process 07/07/2023 2022-2023 - Transmission Planning Process Phase 3 Sequence Schedule 06/16/2023 Presentation - 2022-2023 Transmission Planning Process - Phase 3 Competitive Solicitation - Jun 26, 2023 06/22/2023	Comments
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.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.	Comments
	ISO Board Approved 2022-2023 Transmission Plan 05/22/2023 Appendix A - Board Approved 2022-2023 - Transmission Plan 05/22/2023 Appendix B - Board Approved 2022-2023 - Transmission Plan 05/22/2023 Appendix C - Board Approved 2022-2023 -Transmission Plan 05/22/2023 Appendix D - Board Approved 2022-2023 - Transmission Plan 05/22/2023 Appendix E - Board Approved 2022-2023 -Transmission Plan 05/22/2023 Appendix F - Board Approved 2022-2023 - Transmission Plan 05/22/2023 Appendix G - Board Approved 2022-2023 - Transmission Plan 05/22/2023 Appendix H - Board Approved 2022-2023 - Transmission Plan 05/22/2023 Appendix I - Board Approved 2022-2023 - Transmission Plan Revised 08/24/2023 Appendix J - Board Approved 2022-2023 - Transmission Plan 05/22/2023 Appendix K - Board Approved 2022-2023 - Transmission Plan 05/22/2023	Comments
	Revised Draft 2022-2023 Transmission Plan 05/10/2023 Appendix A - Revised Draft 2022-2023 Transmission Plan 05/10/2023 Appendix B - Revised Draft 2022-2023 Transmission Plan 05/10/2023 Appendix C - Revised Draft 2022-2023 Transmission Plan 05/10/2023 Appendix D - Revised Draft 2022-2023 Transmission Plan 05/10/2023 Appendix E - Revised Draft 2022-2023 Transmission Plan 05/10/2023 Appendix F - Revised Draft 2022-2023 Transmission Plan 05/10/2023 Appendix G - Revised Draft 2022-2023 Transmission Plan 05/10/2023 Appendix H - Revised Draft 2022-2023 Transmission Plan 05/10/2023 Appendix I - Revised Draft 2022-2023 Transmission Plan 05/10/2023 Appendix J - Revised Draft 2022-2023 Transmission Plan 05/10/2023 Appendix K - Revised Draft 2022-2023 Transmission Plan 05/10/2023	Comments
	Alternatives to Trout Canyon-Lugo 500 kV Letter - Lotus Infrastructure Partners - Apr 24, 2023 05/18/2023 Letter - GridLiance West - May 17, 2023 05/18/2023 Letter - NextEra Resources - May 17, 2023 05/18/2023 Letter - Coalition for Optimization of Renewable Development - May 31, 2023 06/01/2023	Comments
Web meeting	Agenda - 2022-2023 Transmission Planning Process - Apr 11, 2023 04/07/2023 Presentation - 2022-2023 Transmission Planning Process - Apr 11, 2023 04/10/2023 Draft 2022-2023 Transmission Plan 04/03/2023 Appendix A - Draft 2022-2023 Transmission Plan 04/03/2023 Appendix B - Draft 2022-2023 Transmission Plan 04/03/2023 Appendix C - Draft 2022-2023 Transmission Plan 04/03/2023 Appendix D - Draft 2022-2023 Transmission Plan 04/03/2023 Appendix E - Draft 2022-2023 Transmission Plan 04/03/2023 Appendix F - Draft 2022-2023 Transmission Plan 04/03/2023 Appendix G - Draft 2022-2023 Transmission Plan 04/03/2023 Appendix H - Draft 2022-2023 Transmission Plan 04/03/2023 Appendix I - Draft 2022-2023 Transmission Plan 04/03/2023 Appendix J - Draft 2022-2023 Transmission Plan 04/03/2023 Appendix K - Draft 2022-2023 Transmission Plan 04/03/2023 Addendum 1 - Draft 2022-2023 Transmission Plan 12/06/2023	View comments Comments
	Letter received from President Reynolds, CPUC Letter - 2022-2023 Transmission Planning Process - Jan 13, 2023 02/13/2023	Comments
Web meeting	Agenda - 2022-2023 Transmission Planning Process - Nov 17, 2022 11/15/2022 Presentation - 2022-2023 Transmission Planning Process - Nov 17, 2022 11/16/2022 ISO Responses to Comments - 2022-2023 Transmission Planning Process - Nov 17, 2022 04/11/2023	View comments Comments
Web meeting	Day 2 of a two-day meeting Agenda - 2022-2023 Transmission Planning Process - Sep 27-28, 2022 09/23/2022 Presentation - 2022-2023 Transmission Planning Process - Sep 28, 2022 09/23/2022 GLW Presentation - 2022-2023 Transmission Planning Process - Sep 28, 2022 09/23/2022 PG&E Presentation - 2022-2023 Transmission Planning Process - Sep 28, 2022 09/23/2022 SCE Presentation - 2022-2023 Transmission Planning Process - Sep 28, 2022 09/23/2022 SDGE Presentation - 2022-2023 Transmission Planning Process - Sep 28, 2022 09/23/2022 ISO Responses to Comments - 2022-2023 Transmission Planning Process - Sept 27-28, 2022 11/16/2022	View comments Comments
Web meeting	Day 1 of a two-day meeting Agenda - 2022-2023 Transmission Planning Process - Sep 27-28, 2022 09/23/2022 Presentation - 2022-2023 Transmission Planning Process - Sep 27, 2022 09/23/2022	Comments
	Reliability assessment 2022-2023 Preliminary Reliability Assessment Results 08/15/2022 2022-2023 Final Reliability Results 10/31/2022	Comments
Web meeting	2022-2023 Transmission Planning Process - Portfolio Transmittal Letter 07/01/2022 CAISO Presentation - 2022-2023 Transmission Planning Process - Jul 6, 2022 07/01/2022 CEC Presentation - 2022-2023 Transmission Planning Process - Jul 6, 2022 07/01/2022 CPUC Presentation (Updated) - 2022-2023 Transmission Planning Process - Jul 6, 2022 07/06/2022	View comments Comments
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.	Comments
	Final Study Plan - 2022-2023 Transmission Planning Process 06/30/2022	Comments
Web meeting	ISO Responses to Comments Matrix - 2022-2023 Transmission Planning Process - Feb 28, 2022 07/06/2022 Presentation - 2022-2023 Transmission Planning Process - Feb 28, 2022 02/24/2022 Draft Study Plan - 2022-2023 Transmission Planning Process 02/18/2022	View comments Comments