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 of resource portfolios for the 2021-2022 TPP. 

Administrative Law Judge's Ruling Seeking Comments on Portfolios to be used in the 2021-2022 TPP, 10/20/2020

Proposed Decision Transferring Electric Resource Portfolios to CAISO for 2021-2022 TPP, 1/8/2021

Final Decision Transferring Electric Resource Portfolios to CAISO for 2021-2022 TPP, 2/22/2021

CPUC Framework for TPP Portfolio Selection

CPUC Framework for TPP Portfolio Selection, 10/23/2020 

Draft IRP Portfolios for the 2021-2022 TPP

Descriptions of the Recommended IRP Portfolios for the 2021-2022 TPP, 10/23/20

Final portfolios are available under the "Portfolio Resource-to-Busbar Mapping Results & Assumptions" section below

Methodology for Resource-to-Busbar Mapping & Assumptions

CPUC Staff Proposal: Methodology for Resource-to-Busbar Mapping & Assumption for the 2021-2022 TPP, 10/23/2020

Redlined Comparison of 10/23/2020 CPUC Staff Proposal to 3/30/2020 Methodology for 2019 IRP Resource-to-Busbar Mapping, 10/23/2020

Final Methodology for Resource-to-Busbar Mapping & Assumption for the 2021-2022 TPP, 1/8/2021

Redlined Comparison of 1/7/2021 Final Methodology to 10/23/2020 Proposed Methodology for Resource-to-Busbar Mapping & Assumption for the 2021-2022 TPP, 1/8/2021

Portfolio Resource-to-Busbar Mapping Results & Assumptions

Updated Transmission Calculations:  Transmission limit exceedance calculation using the updated CAISO 2021 Transmission Capability Estimates White Paper

 

Report: Modeling Assumptions for the 2021-2022 Transmission Planning Process

Busbar Mapping Results for Battery Storage - 46 MMT with 2019 IEPR Base Case Portfolio, 38 MMT with 2019 IEPR policy-driven sensitivity portfolio, Offshore Wind Sensitivity Portfolio

Busbar Mapping Dashboard workbook - 46 MMT with 2019 IEPR Base Case Portfolio

Busbar Mapping Dashboard workbook - 38 MMT with 2019 IEPR Portfolio

Busbar Mapping Dashboard Workbook - Offshore Wind Sensitivity Portfolio

Mapping Results by Substation Summary for All Portfolios (46 MMT with 2019 IEPR Base Case Portfolio, 38 MMT with 2019 IEPR policy-driven sensitivity portfolio, and Offshore Wind Sensitivity Portfolio), 2/26/2021

    2020 IRP Baseline Reconciliation (for non-battery and battery mapped resources), 1/15/2021

    Retirement List for the Policy-Driven Sensitivity Portfolio, 1/8/2021

    Proposed Resource Portfolios for CAISO's 2021-2022 TPP, 1/22/2021

    RESOLVE PACKAGE:  This package contain the RESOLVE model inputs and results for the three portfolios.  These portfolios were developed using the same modeling assumptions as the 2019 Reference System Plan (RSP) 46 MMT by 2030 portfolio adopted by D.20-03-028 with a few changes and updates described in the Report.  The zip file contains these components:

    • Excel-based Scenario Tool
    • Excel-based Resource Costs and Build
    • Excel-based Results Viewer
    • Inputs data files for the three portfolios
    • Results data files for the three portfolios

    CEC Busbar Mapping Results

    CEC Busbar mapping results for non-battery resources are available at the link provided below.  This includes one file that covers the 46 MMT with 2019 IEPR base case portfolio, 38 MMT with 2019 IEPR policy-driven sensitivity portfolio,  and the offshore wind policy-driven sensitivity portfolio.

    Data Basin link to Excel files available here

    Reliability Analysis

    SERVM Analysis of IRP 46 MMT Portfolio for Use in the 2021-2022 TPP, 1/15/2021

    Additional information and datasets available here

    Available information includes data used in the SERVM reliability modeling of the TPP portfolios.  Most of the data remains the same as was used for the Reference System Plan except data updated as part of the 2019 IEPR update.  Two new files were posted that are both identifiable by the mention of 2019 IEPR in the filename including updated MW forecasts for certain demand modifiers revised in the 2019 IEPR and peak and energy forecasts from the 2019 IEPR update.

    Background

    Solar Cost Sensitivity Modeling slides available here