STATE OF CALIFORNIA
PUBLIC UTILITIES COMMISSION

San Diego Gas & Electric Company (SDG&E)
Suncrest 230 Kilovolt (kV) Loop-In Project

Application A.26-05-005, filed May 8, 2026

This page was last updated: May 2026

Welcome to the California Public Utilities Commission (CPUC) website for the California Environmental Quality Act (CEQA) review of the Suncrest 230 Kilovolt (kV) Loop-In Project (Project) proposed by SDG&E (Applicant). An application (add application number) for the Project was submitted to the CPUC on May 8, 2026 (Application A.26-05-005) This site provides access to public documents and information relevant to the CEQA review process. Additional project information and documentation will be posted as it becomes available

The proposed Project will be reviewed under the California Environmental Quality Act (CEQA). The CPUC will prepare a CEQA environmental document as the CEQA lead agency. This website provides access to public documents and information relevant to the CEQA environmental review process. An overview of the proposed Project is provided below:

CPUC Review Process

Following receipt of a complete application, the California Public Utilities Commission (CPUC) conducts two parallel processes when considering development proposed by a regulated utility:

(1) an application process, in which the CPUC reviews the utility’s proposal and considers whether the project is needed and is in the public interest; and

(2) an environmental review process pursuant to CEQA. Under CPUC General Order (GO) 131-E, which supersedes GO 131-D, proposed project proponents that require a Permit to Construct (PTC) from the CPUC may now elect to prepare a draft version of a negative declaration, mitigated negative declaration, EIR, addendum or analysis on the applicability of an exemption from CEQA in lieu of a PEA.

Click here for more information about the CPUC’s decision and review process.
The proceeding schedule is managed on the docket card for the application.

Click here for information and documents associated with the CPUC’s proceedings for the Project.

Introduction and Background

SDG&E, in its CPUC application (A.26-05-005) filed on May 8, 2026, requests a PTC for the Suncrest 230 kV Loop-In Project (Project). The CPUC conducts an efficient and thorough Environmental Review process under GO 131-E. The CPUC's GO 131-E outlines rules for the permitting and construction of electrical transmission lines, power lines, distribution lines, substations, and electric generation facilities in California.

The Project would consist of construction of an approximately 14.5-mile-long, double-circuit 230 kV transmission line consisting of overhead and underground segments to interconnect SDG&E’s existing Transmission Line (TL) 23021 into the existing Suncrest Substation. The proposed 230 kV transmission line would create a loop for system reliability. The Project would also include modifications to the existing Suncrest Substation, including (1) installation of a 500/230 kV transformer bank and associated tertiary reactors, circuit breakers, disconnects, and communication equipment and (2) construction of a 230 kV bay to accommodate the loop-in of TL 23021 to the existing Suncrest Substation. The Proposed Project would cross unincorporated communities within San Diego County, California, including Crest and Harbison Canyon. Figure 1 shows the proposed route.

The California Independent System Operator (CAISO) 2022-2023 Transmission Plan identified the need for the Proposed Project to upgrade the California electric grid to accommodate load growth. The Proposed Project would:

• Address operational challenges and thermal overloads on SDG&E’s existing TL 23054 and TL23055 from SDG&E’s existing Suncrest Substation to the existing Sycamore Canyon Substation, as well as operational challenges and thermal overloads on the existing transformers at the Suncrest Substation.
• Help supply the increase in forecasted load related to regional electrification.

Environmental Review

As the CEQA Lead Agency, the CPUC will prepare an Environment Impact Report (EIR) to evaluate the environmental effects of the Proposed Project. The following table includes milestones and anticipated dates for the CEQA review process.

Project Milestones
Milestone	Date
Application and Administration Draft EIR submitted by SDG&E to CPUC	May 8, 2026
30-Day Application Completeness Review due	June 7, 2026

Documents Available for Review

Public documents related to the Project and Draft EIR for the Suncrest 230 kV Loop-In Project can be found here:

SDG&E Project Application (May 8, 2026)

Proponent’s Administrative Draft Version of an EIR (May 8, 2026)
Suncrest 230 kV Loop-In Project Administrative Draft EIR – Volume I
Suncrest 230 kV Loop-In Project Administrative Draft EIR – Volume II

For Additional Information

The CPUC Energy Division is managing the environmental review of the Project. The CPUC's Project Manager is:

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