The California ISO 2024-2025 transmission planning cycle involves key stakeholder activities from 2024 through early 2025. 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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Mar 31, 2025* Draft transmission plan posting
Apr 15, 2025* Meeting Apr 29, 2025* Comments due May 2025* Board of Governors meeting May 30, 2025* Final board-approved transmission plan posting |