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 |
|---|---|---|---|
|
Feb 22, 2024 Draft study plan posted
Jun 27, 2024 Final study plan posted Aug 14, 2024 Preliminary reliability study results and mitigation solutions posting Aug 23, 2024 Base scenario base case posted Sep 23-24, 2024 Meeting Oct 08, 2024 Comments due Oct 31, 2024* Final reliability study results posting Nov 12, 2024* Preliminary assessment of policy and economic studies posting Nov 14, 2024* Meeting Dec 02, 2024* Comments due Mar 31, 2025* Draft transmission plan posting Apr 15, 2025* Meeting May 2025* Board of Governors meeting May 30, 2025* Final board-approved transmission plan posting |