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.
Development | Decision | Implementation | Completed/Closed |
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Phase 1
Mar 31, 2021 Final study plan posted Phase 2 Aug 13, 2021* Preliminary reliability study results posting Sep 27-28, 2021* Meeting Oct 12, 2021* Comments due |
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. |
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Final study plan |
Final 2021-2022 Study Plan 03/31/2021
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Web meeting |
Draft 2021-2022 Study Plan 02/18/2021
Agenda - 2021-2022 Transmission planning Process - Feb 25, 2021 02/25/2021
Presentation - 2021-2022 Transmission Planning Process - Feb 25, 2021 02/25/2021
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