2021-2022 Transmission planning process

Started: Feb 18, 2021

Leads
Jeff Billinton

The California ISO 2021-2022 transmission planning cycle involves key stakeholder activities from 2021 through early 2022. 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.

Status

Development Decision Implementation Completed/Closed
Mar 31, 2021 Final study plan posted
Mar 16-17, 2022 ISO Board of Governors approval - transmission plan

Activities

Qualified project sponsors and proposals


List of Qualified Project Sponsors and Proposals - Collinsville Substation Project

List of Qualified Project Sponsors and Proposals - Manning Substation Project

Validated project sponsor applications


List of Validated Project Sponsor Applications - Newark - Northern Receiving Station HVDC Project

List of Validated Project Sponsor Applications - Metcalf - San Jose B HVDC Project

List of Validated Project Sponsor Applications - Collinsville 500/230 kV Substation Project

List of Validated Project Sponsor Applications - Manning 500/230 kV Substation Project

Web meeting


ISO Responses to Comments - 2021-2022 Transmission Planning Process - Accessing Out-of-State Wind Resources - Jun 27, 2022

Request for Expressions of Interest - Accessing Out-of-State Wind Resources

Presentation - 2021-2022 Transmission Planning Process - Jun 27, 2022

White Paper - 2021-2022 Transmission Planning Process - Accessing Out-of-State Wind Resources to Meet California Resource Adequacy Requirements - Jun 20, 2022

View comments


ISO Board Approved 2021-2022 Transmission Plan

Appendix A - Board Approved 2021-2022 Transmission Plan

Appendix B - Board Approved 2021-2022 Transmission Plan

Appendix C - Board Approved 2021-2022 Transmission Plan

Appendix D - Board Approved 2021-2022 Transmission Plan

Appendix E - Board Approved 2021-2022 Transmission Plan

Appendix F - Board Approved 2021-2022 Transmission Plan

Appendix G - Board Approved 2021-2022 Transmission Plan

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

Key Selection Factors - 2021-2022 Transmission Planning Process

2021-2022 Transmission Planning Process Phase 3 Sequence Schedule

San Jose Interests in New CAISO Transmission Lines

Web meeting


ISO Responses to Comments Matrix - 2021-2022 Transmission Planning Process Competitive Solicitation

Presentation - 2021-2022 Transmission Planning Process - Phase 3 Competitive Solicitation - Apr 20, 2022

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.


Revised Draft 2021-2022 Transmission Plan

Appendix A - Revised Draft 2021-2022 Transmission Plan

Appendix B - Revised Draft 2021-2022 Transmission Plan

Appendix C - Revised Draft 2021-2022 Transmission Plan

Appendix D - Revised Draft 2021-2022 Transmission Plan

Appendix E - Revised Draft 2021-2022 Transmission Plan

Appendix F - Revised Draft 2021-2022 Transmission Plan

Appendix G - Revised Draft 2021-2022 Transmission Plan

Web meeting


Presentation - Draft 2021-2022 Transmission Plan - Feb 7, 2022

Draft 2021-2022 Transmission Plan

Appendix A - Draft 2021-2022 Transmission Plan

Appendix B - Draft 2021-2022 Transmission Plan

Appendix C - Draft 2021-2022 Transmission Plan

Appendix D - Draft 2021-2022 Transmission Plan

Appendix E - Draft 2021-2022 Transmission Plan

Appendix F - Draft 2021-2022 Transmission Plan

Appendix G - Draft 2021-2022 Transmission Plan

View comments

Web meeting


Agenda - 2021-2022 Transmission Planning Process - Nov 18, 2021

Presentation - 2021-2022 Transmission Planning Process - Nov 18, 2021
Written comments deadline extended from December 2 to December 6

View comments

Web meeting


Day 2 Presentation - 2021-2022 Transmission Planning Process - Sep 27-28, 2021

PG&E Presentation - 2021-2022 Transmission Planning Process - Sep 27-28, 2021

SCE Presentation - 2021-2022 Transmission Planning Process - Sep 27-28, 2021

SDGE Presentation - 2021-2022 Transmission Planning Process - Sep 27-28, 2021

GLW Presentation - 2021-2022 Transmission Planning Process - Sep 27-28, 2021

View comments

Web meeting


Agenda - 2021-2022 Transmission Planning Process - Sep 27-28, 2021

Day 1 Presentation - 2021-2022 Transmission Planning Process - Sep 27-28, 2021

Reliability assessment


2021-2022 Final Reliability Assessment Results

2021-2022 Preliminary Reliability Assessment Results

Web meeting


View comments

Web meeting


Special study

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.

Final study plan


Final 2021-2022 Study Plan

Web meeting


ISO Responses to Comments - 2021-2022 Transmission Planning Process - Feb 25, 2021

Draft 2021-2022 Study Plan

Agenda - 2021-2022 Transmission planning Process - Feb 25, 2021

Presentation - 2021-2022 Transmission Planning Process - Feb 25, 2021