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Open Access Information
On this page you will find information on SCE's tariffs for wholesale customers under the jurisdiction of the Federal Energy Regulatory Commission (FERC): the Transmission Owner Tariff and the Wholesale Distribution Access Tariff.
- The Transmission Owner Tariff provides, in conjunction with the California Independent System Operator ("CAISO") tariff, certain terms and conditions for service utilizing SCE's transmission facilities that have been turned over to the operational control of the CAISO.
- The Wholesale Distribution Access Tariff provides the terms and conditions for service utilizing SCE's distribution facilities that are under its operational control.
In this section, SCE posts its currently effective rates for transmission service and formula transmission rate information.
Attention: Information regarding SCE's generation interconnection process (including application forms, interconnection queue and circuit maps) has been moved. Please visit the SCE's interconnection webpage at: on.sce.com/gridinterconnections.
SCE Transmission Owner Tariff
2020 Transmission Maintenance and Compliance Review (TMCR)
- 2020 Draft Transmission Maintenance and Compliance Review (TMCR) Report
- Transmission Maintenance and Compliance Review Stakeholder Meeting Notice – June 26
2019 Transmission Maintenance and Compliance Review (TMCR)
- 2019 Final Transmission Maintenance and Compliance Review (TMCR) Report
- Stakeholder Comments on Final 2019 TMCR Report
- 2019 Draft Transmission Maintenance and Compliance Review (TMCR) Report
- Transmission Maintenance and Compliance Review Stakeholder Meeting Notice – May 29
- 2019 Draft TMCR Stakeholder Meeting Presentation – May 29, 2019
- Stakeholder comments template – 2019 Draft TMCR
- Stakeholder Comments on Draft 2019 TMCR Report
Transmission Owner Tariff (TOT) Combined - effective June 1, 2020
- Title Page, 0.0.0 – effective June 1, 2010
- Table of Contents, 2.0.0 – effective January 1, 2016
- Section 1, Preamble, 0.0.0 – effective June 1, 2010
- Section 2, Effective Date, 0.0.0 – effective June 1, 2010
- Section 3, TO Definitions, 1.0.0 – effective January 1, 2018
- Section 4, Eligibility, 0.0.0 – effective June 1, 2010
- Section 5, Access Charges and Transmission Rates, 2.0.0 – effective January 1, 2018
- Section 6, Ancillary Services, 0.0.0 – effective June 1, 2010
- Section 7, Billing and Payment, 0.0.0 – effective June 1, 2010
- Section 8, Obligation to Interconnect or Construct Transmission Expansion & Facility Upgrades, 1.0.0 – effective June 1, 2010
- Section 9, Expansion Process, 0.0.0 – effective June 1, 2010
- Section 10, Interconnection Process, 0.0.0 – effective June 1, 2010
- Section 11, Uncontrollable Forces and Indemnification, 0.0.0 – effective June 1, 2010
- Section 12, Regulatory Filings, 0.0.0 – effective June 1, 2010
- Section 13, Creditworthiness, 0.0.0 – effective June 1, 2010
- Section 14, Disputes, 0.0.0 – effective June 1, 2010
- Section 15, Recovery of Reliability Service Costs, 0.0.0 – effective June 1, 2010
- Section 16, Miscellaneous, 0.0.0 – effective June 1, 2010
- Appendix I, Transmission Revenue Requirement, 16.0.0 – effective January 1, 2020
- Appendix II, Charges for Wholesale Transmission Services, 8.0.0 – effective January 1, 2018
- Appendix III, Transmission Rates for End-Use Service, 20.0.0 – effective June 1, 2020
- Appendix IV, Rates for Certain Ancillary Service Bids, 0.0.0 – effective June 1, 2010
- Appendix V, Notices, 0.0.0 – effective June 1, 2010
- Appendix VI, Reliability Services Rate Schedule, 16.0.0 – effective January 1, 2020
- Appendix VII, Interconnection Procedures in Effect Prior to July 1, 2005, 0.0.0 – effective June 1, 2010
- Appendix VIII, Not Used, 5.0.0 – effective January 1, 2012
- Appendix IX, Formula Rate, 0.0.0 – effective January 1, 2012
- Appendix X, Rate Schedule for Recovery of Costs, 16.0.0 – effective July 26, 2019
- Appendix XI, Appendix XI - TMCR, 0.1.0 – effective September 1, 2018
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Supplemental Documents
- Order 864 Filing – April 30, 2020
- Filing Letter
- Exhibit A
- Exhibit B (PDF/Excel)
- TO Tariff Revisions
- Post Retirement Benefits Other than Pensions (PBOPs) Filing-- March 25, 2020
- Depreciation Update Filing – February 21, 2020
- Formula Transmission Rate TO2020 Annual Update - November 22, 2019
- Filing Letter
- Attachment 1: Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Retail and Wholesale Transmission Rates Effective January 1, 2020
- Attachment 3: Revisions to Formula Rate Inputs Compared to June 14, 2019
- Attachment 4: Workpapers
- Attachment 5: TO2018 True Up TRR (PDF)/ (Excel) and Incremental Workpapers
- Formula Transmission Rate TO2019A Partial Settlement Filing – September 27, 2019
- Formula Transmission Rate TO2018 Settlement Filing – September 16, 2019
- Formula Transmission Rate TO2020 Draft Annual Update - June 14, 2019
- Draft Filing Letter
- Attachment 1: Draft Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Draft Retail and Wholesale Transmission Rates Effective January 1, 2020
- Attachment 3: Draft Revisions to Formula Rate Inputs Compared to June 14, 2019
- Attachment 4: Workpapers
- Attachment 5: TO2018 True Up TRR (PDF)/ (Excel)
- Formula Transmission Rate Filing TO2019A - April 11, 2019
- Volume 1: General Info
- Volume 2: Testimony
- Exhibit SCE-4: Formula Determination of Base TRR (PDF) / (Excel)
- Volume 3: Workpapers
- Post Retirement Benefits Other than Pensions (PBOPs) Filing-- March 8, 2019
- Phase 2 Retail Rate Change Filing – February 28, 2019
- Formula Transmission Rate TO2019 Annual Update - November 29, 2018
- Filing Letter
- Attachment 1: Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Retail and Wholesale Transmission Rates Effective January 1, 2019
- Attachment 3: Revision to Formula Rate Inputs Compared to June 15, 2018
- Attachment 4: Workpapers
- Attachment 5: TO13 True Up TRR (PDF)/ (Excel) and Incremental Workpapers
- EV Rate Revision Filing - November 20, 2018
- TCJA Revision Filing - September 17, 2018
- Formula Transmission Rate TO2019 Draft Annual Update - June 15, 2018
- Draft Filing Letter
- Attachment 1: Draft Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Draft Retail and Wholesale Transmission Rates Effective January 1, 2019
- Attachment 3: Draft Revisions to Formula Rate Inputs Compared to June 15, 2018
- Attachment 4: Workpapers (1 / 2)
- Attachment 5: TO13 True Up TRR (PDF)/ (Excel) and Incremental Workpapers
- Successor Formula Transmission Rate TO2018 - October 27, 2017
- Volume 1: General Info
- Volume 2: Testimony
- Exhibit SCE-4: Formula Determination of Base TRR (PDF) / (Excel)
- Volume 3: Workpapers (1 / 2)
- Formula Transmission Rate TO12 Annual Update - October 27, 2017
- Filing Letter
- Attachment 1: Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Retail and Wholesale Transmission Rates Effective January 1, 2018
- Attachment 3: Draft Revisions to Formula Rate Inputs Compared to June 15, 2017
- Attachment 4: Workpapers (1 / 2)
- Formula Transmission Rate TO12 Draft Annual Update - June 15, 2017
- Draft Filing Letter
- Attachment 1: Draft Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Draft Retail and Wholesale Transmission Rates Effective January 1, 2018
- Attachment 3: Draft Revisions to Formula Rate Inputs Compared to June 15, 2016
- Attachment 4: Workpapers (1 / 2)
- Accumulated Deferred Income Taxes (ADIT) Net Operating Loss (NOL) Revision Filing - February 1, 2017
- Formula Transmission Rate TO11 Annual Update - November 30, 2016
- Filing Letter
- Attachment 1: Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Retail and Wholesale Transmission Rates Effective January 1, 2017
- Attachment 3: Draft Revisions to Formula Rate Inputs Compared to June 15, 2016
- Attachment 4: Workpapers (1 / 2)
- Post Retirement Benefits Other than Pensions (PBOPs) Filing--August 16, 2016
- Filing Letter
- Attachment 1: Formula Spreadsheet Schedule 35
- Attachment 2: Actuarial Report for 2015
- TO Tariff Revisions
- Formula Transmission Rate TO11 Draft Annual Update - June 15, 2016
- Draft Filing Letter
- Attachment 1: Draft Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Draft Retail and Wholesale Transmission Rates Effective January 1, 2017
- Attachment 3: Draft Revisions to Formula Rate Inputs Compared to June 15, 2016
- Attachment 4: Workpapers (1 / 2)
- Retail Rate Revision Filing-Standby Rates - April 13, 2016
- Retail Rate Revision Filing-Net Energy Metering – March 30, 2016
- Depreciation Update Filing - January 6, 2016
- Formula Transmission Rate TO10 Annual Update - December 1, 2015
- Filing Letter
- Attachment 1: Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Retail and Wholesale Transmission Rates Effective January 1, 2016
- Attachment 3: Revisions to Formula Rate Inputs Compared to June 15, 2015
- Attachment 4: Workpapers (1 / 2)
- Formula Transmission Rate TO10 Draft Annual Update - June 15, 2015
- Draft Filing Letter
- Attachment 1: Draft Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Draft Retail and Wholesale Transmission Rates Effective January 1, 2016
- Attachment 3: Draft Revisions to Formula Rate Inputs Compared to June 15, 2015
- Attachment 4: Workpapers (1 / 2)
- Unfunded Reserves Filing - April 3, 2015
- Filing Letter
- Attachment 1: One Time True Up TRR Adjustment Workpaper (PDF) / (Excel)
- Attachment 2: Revised TO8 Formula Spreadsheet Workpaper (PDF) / (Excel)
- Attachment 3: Revised TO9 Formula Spreadsheet Workpaper (PDF) / (Excel)
- TO Tariff Revisions
- Formula Transmission Rate TO9 Annual Update - November 25, 2014
- Filing Letter
- Attachment 1: Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Retail and Wholesale Transmission Rates Effective January 1, 2015
- Attachment 3: Revisions to Formula Rate Inputs Compared to June 13, 2014
- Attachment 4: Workpapers (1 / 2)
- Formula Transmission Rate TO8 Amended Annual Update - September 17, 2014
- Filing Letter
- Attachment 1: Formula Determination of Revised 2012 True Up TRR (PDF) / (Excel)
- Attachment 2: Revised Workpapers
- Attachment 3: Revised 2012 True Up TRR Explanation
- Attachment 4:Monthly Comparison of TRR Change
- Post Retirement Benefits Other than Pensions (PBOPs) Filing--September 5, 2014
- Filing Letter
- Attachment 1: Formula Spreadsheet Schedule 35
- Attachment 2: Actuarial Report for 2013
- Attachment 3: Proposed Revised Formula Spreadsheet with TO9 Inputs
- Attachment 4: PBOPs Formula Rate Issue Description
- Attachment 5: Formula Spreadsheet
- TO Tariff Revisions
- Formula Transmission Rate TO9 Draft Annual Update Revised- July 16, 2014
- Draft Filing Letter
- Explanation of ER08-375 CWIP ROE Change
- Attachment 1: Draft Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Draft Retail and Wholesale Transmission Rates Effective January 1, 2015
- Attachment 4: Revised Workpapers
- Formula Transmission Rate TO9 Draft Annual Update - June 13, 2014
- Draft Filing Letter
- Attachment 1: Draft Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Draft Retail and Wholesale Transmission Rates Effective January 1, 2015
- Attachment 3: Draft Revisions to Formula Rate Inputs Compared to June 13, 2014
- Attachment 4: Workpapers (1 / 2)
- Formula Transmission Rate TO8 Amended Annual Update (Draft) - June 13, 2014
- Notice of Revision to TO8 Annual Update
- Revised 2012 True Up TRR Explanation
- Attachment 1: Formula Determination of Revised 2012 True Up TRR (PDF) / (Excel)
- Attachment 4: Revised Workpapers
- Formula Transmission Rate TO8 Annual Update - November 26, 2013
- Filing Letter
- Attachment 1: Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Retail and Wholesale Transmission Rates Effective January 1, 2014
- Attachment 3: Revisions to Formula Rate Inputs Compared to September 24, 2013
- Attachment 4: Workpapers
- Formula Transmission Rate TO8 Draft Annual Update Based on Aug 26, 2013 Offer of Settlement - September 24, 2013
- Draft Filing Letter
- Attachment 1: Draft Formula Determination of Base TRR (PDF) / (Excel)
- Attachment 2: Draft Retail and Wholesale Transmission Rates Effective January 1, 2014
- Attachment 3: Draft Revisions to Formula Rate Inputs Compared to September 24, 2013
- Attachment 4: Workpapers
- FERC Formula Rate Settlement - August 26, 2013
- 2nd Formula Transmission Rate Draft Informational Filing - June 14, 2013
- Draft Filing Letter
- Draft Formula Determination of Base TRR (PDF) / (ZIP)
- Workpapers
- Depreciation Update Filing - April 8, 2013
- Retail Rate Revision Filing – March 29, 2013
- 1st Formula Transmission Rate Informational Filing - September 14, 2012
- Filing Letter & Attachments 2-3
- Formula Determination of Base TRR (PDF)/(ZIP)
- Workpapers
- 1st Formula Transmission Rate Draft Informational Filing - June 15, 2012
- Draft Filing Letter
- Draft Formula Determination of Base TRR (PDF) / (ZIP)
- Workpapers
SCE Wholesale Distribution Access Tariff
Wholesale Distribution Access Tariff (WDAT) Combined - effective October 30, 2019
- Title Page, 0.0.0 – effective May 28, 2010
- Table of Contents, 17.0.0 – effective October 30, 2019
- Section 1, Preamble and Applicability, 16.0.0 – effective October 30, 2019
- Section 2, Definitions, 16.0.0 – effective October 30, 2019
- Section 3, Ancillary Services, 0.0.0 – effective May 28, 2010
- Section 4, Not Used, 0.0.0 – effective May 28, 2010
- Section 5, Billing and Payment, 0.0.0 – effective May 28, 2010
- Section 6, Regulatory Filings, 0.0.0 – effective May 28, 2010
- Section 7, Uncontrollable Forces and Indemnification, 0.0.0 – effective May 28, 2010
- Section 8, Creditworthiness, 0.0.0 – effective May 28, 2010
- Section 9, Dispute Resolution, 0.0.0 – effective May 28, 2010
- Section 10, Governing Law, 0.0.0 – effective May 28, 2010
- Section 11, Not Used, 0.0.0 – effective May 28, 2010
- Section 12, Nature of Distribution Service, 16.0.0 – effective October 30, 2019
- Section 13, Service Availability, 16.0.0 – effective October 30, 2019
- Section 14, Distribution Customer Responsibilities, 17.0.0 – effective October 30, 2019
- Section 15, Procedures for Arranging Distribution Service, 16.0.0 – effective October 30, 2019
- Section 16, Additional Study Procedures For Distribution Service Re, 17.0.0 – effective October 30, 2019
- Section 17, Procedures if the Distribution Provider is Unable to Co, 0.0.0 – effective May 28, 2010
- Section 18, Not Used, 0.0.0 – effective May 28, 2010
- Section 19, Not Used, 0.0.0 – effective May 28, 2010
- Section 20, Metering and Power Factor Correction at the Point of Receipt or the Point of Delivery, 0.0.0 – effective May 28, 2010
- Section 21, Compensation for Distribution Service, 16.0.0 – effective October 30, 2019
- Section 22, Stranded Cost Recovery, 0.0.0 – effective May 28, 2010
- Section 23, Not Used, 0.0.0 – effective May 28, 2010
- Section 24, Standards of Conduct, 0.0.0 – effective May 28, 2010
- Attachment A Form of Service Agreement for Wholesale Distribution Service, 16.0.0 - effective October 30, 2019
- Attachment B Technical and Operational Implementation of the Tariff for Wholesale Distribution Load, 0.0.0- effective May 28, 2010
- Attachment C Technical and Operational Implementation of the Tariff for Generation Resources, 16.0.0 - effective October 30, 2019
- Attachment D Methodology for Completing a System Impact Study, 0.0.0 - effective May 28, 2010
- Attachment E Index of Wholesale Distribution Service Customers, 0.0.0 - effective May 28, 2010
- Attachment F Standard Large Generator Interconnection Procedures, 0.0.0 - effective May 28, 2010
- Attachment G Standard Small Generator Interconnection Procedures, 1.0.0 - effective October 1, 2014
- Attachment H Clustering Large Generator Interconnection Procedures, 0.0.0 - effective May 28, 2010
- Attachment I Generator Interconnection Procedures, 16.0.0 - effective October 30, 2019
- Appendix 1 Interconnection Request for a Generating Facility, 16.0.0 - effective October 30, 2019
- Appendix 2 Procedures for Transitioning Interconnection Requests, 1.0.0 - effective March 2, 2011
- Appendix 3 Generator Interconnection Study Process Agreement for Cluster Study Process, 17.0.0 - effective October 30, 2019
- Appendix 4 Independent Study Process Study Agreement, 17.0.0 - effective October 30, 2019
- Appendix 5 Generator Interconnection Agreement CSP, 1.0.0 - effective December 8, 2012
- Appendix 5.1 Generator Interconnection Agreement CSP for QC4, 2.0.0 - effective October 1, 2014
- Appendix 5.2 Generator Interconnection Agreement CSP for QC5, 16.0.0 - effective October 30, 2019
- Appendix 6 Generator Interconnection Agreement Independent Study Process, 1.0.0 - effective December 8, 2012
- Appendix 6.1 Generator Interconnection Agreement ISP for QC4, 2.0.0 - effective October 1, 2014
- Appendix 6.2 Generator Interconnection Agreement ISP for QC5, 16.0.0 - effective October 30, 2019
- Appendix 7 Generator Interconnection Agreement Fast Track Process, 16.0.0 - effective October 30, 2019
- Appendix 8 Certification Codes and Standards, 1.0.0 - effective January 23, 2017
- Appendix 9 Certification of Small Generator Equipment Packages, 0.0.0 - effective March 2, 2011
- Appendix 10 Application, Procedures, and Terms and Conditions, 2.0.0 - effective January 23, 2017
- Attachment J, Rate Schedule for Recovery of Costs, 3.0.0 - effective July 26, 2019
- Attachment K, Rate Schedule for Recovery of Costs Associated with Charging Distribution Service, 1.0.0 - effective October 30, 2019
Public WDAT-Rule 21 Queue
SCE- WDAT and Rule 21 Interconnection Requests (Excel)
Financial Security Forms
- SCE Grid Interconnection Letter of Credit
- SCE Grid Interconnection Guaranty
- SCE Grid Interconnection Surety Bond
- SCE Grid Interconnection Escrow Agreement
Interconnection Application Forms
Pre-Application Reports
Environmental Services Work
Contact Us
Should you have any questions regarding SCE's Open Access Information, please contact David Schiada in SCE's Regulatory Operations:
Email: David.Schiada@sce.com
If you have questions regarding SCE's generation interconnection processes, please use the contact information below:
Email: interconnectionQA@sce.com
Phone: (626) 302-3688
Mailing Address:
Grid Interconnection & Contract Development
Southern California Edison
2244 Walnut Grove Ave
PO Box 945
Rosemead, CA 91770