2024-2025 Transmission Planning Process: Draft transmission plan posting on 3/31/25, call on 4/15/25

The California ISO will host a public stakeholder call for the 2024-2025 Transmission Planning Process to discuss the 2024-2025 draft transmission plan on April 15, 2025. The draft transmission plan will be available on the 2024-2025 transmission planning process webpage by end of day March 31, 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 2024-2025 transmission planning cycle involves key stakeholder activities from 2024 through early 2025.

The plan reflects a new more proactive approach to transmission planning and seeks to better synchronize decisions related to power and transmission planning, interconnection queuing, and resource procurement.

Please submit comments on the draft transmission plan and stakeholder meeting discussion by end of day April 29, 2025, through the ISO’s commenting tool on the 2024-2025 transmission planning process webpage.