Assumptions for the 2024-2025 TPP
The Integrated Resource Planning (IRP) process develops a resource portfolio(s) annually as a key input to the California Independent System Operator's (CAISO) Transmission Planning Process (TPP) base case studies, which includes a reliability base case portfolio and a policy-driven base case portfolio. The California Public Utilities Commission (CPUC) may also transmit additional resource portfolios as inputs for sensitivity studies that test the implications of various policy futures. This page contains documentation relevant to the development and mapping of resource portfolios for the 2024-2025 TPP.
Administrative Law Judge’s Ruling Seeking Comment on Proposed 2023 Preferred System Plan and TPP Portfolios, 10/05/2023
Methodology for Resource-to-Busbar Mapping
The busbar mapping methodology states guiding principles, establishes mapping criteria, and outlines the iterative inter-agency mapping process.
Methodology for Resource-to-Busbar Mapping for the Annual TPP, Ruling version, 10/5/2023
Red-lined Methodology for Resource-to-Busbar Mapping for the Annual TPP (red-lined from the 07/17/2023 draft version), 10/5/2023
Draft Methodology for Resource-to-Busbar Mapping for the Annual TPP, 7/17/2023
Preliminary Busbar Mapping
Dashboard for Preliminary Mapping of Proposed 24-25 TPP Base Case, 10/26/2023
Supplemental Workbooks for Busbar Mapping:
- Commercial Interest Analysis of CAISO Interconnection Queue, 10/26/2023
- Baseline Reconciliation, 10/26/2023
Workshops
IRP Workshop on Ruling Proposing 2023 Preferred System Plan and 2024-25 Transmission Planning Process Portfolios - October 20, 2023:
Webinar on Busbar Mapping Methodology Updates - July 18, 2023:
- CPUC Presentation Slides: Draft Updates to the Busbar Mapping Methodology
- CEC Presentation Slides: Land-Use Evaluation for Busbar Mapping
- Webinar Recording
- Webinar Q&A
Links to CEC's Final Land-Use Screens Staff Report and Web Mapping Application:
- Link to report: Click here
- Link to web mapping application