PDF: Files linked on this page are in Portable Document Format (PDF). To view them, you will need to download the free Adobe Acrobat Reader if it is not already installed on your PC.

LARGE FILES: Files 3 MB or larger have sizes shown in parentheses. For best results when displaying large files, right-click the link and click "Save Target As". This will download the file to your  computer. Browse to the save location and double-click the file to open it in Acrobat.

WEBSITE INFO: This page is best viewed with Mozilla Firefox or Internet Explorer. Please report any problems to the Energy Division web coordinator.
















































Welcome to the California Public Utilities Commission (CPUC) website for the California Environmental Quality Act (CEQA) review of the proposed LS Power Grid California, LLC (LSPGC or the Applicant) Gates 500 kV Dynamic Reactive Support Project (Project). This website provides access to public documents and information relevant to the CEQA review process.


The Applicant, in its CPUC application (A.21-02-018), filed on February 19, 2021, requests a Permit To Construct (PTC) for the construction and operation of the Gates 500kV Dynamic Reactive Support Project (the Project). The application includes the Proponent’s Environmental Assessment (PEA) prepared pursuant to Rule 2.4 of the CPUC’s Rules of Practice and Procedure. Under CPUC General Order 131-D, approval of the Project must comply with CEQA.

The Project site would be located on an approximately 20-acre site located in an unincorporated portion of southwestern Fresno County (see Location Map), adjacent to and directly north of the existing PG&E Gates 500 kV Substation. The proposed Project was identified by the California Independent System Operator Corporation (CAISO) in its 2018-2019 Transmission Plan as a “reliability-driven” project that would address and mitigate voltage support issues by providing system stability and reliability. Specifically, construction of the Project would support the regional transmission system by providing voltage support and grid stability at the PG&E Gates Substation. This would facilitate the reliable operation of the extra high voltage transmission system in the electrical vicinity of the PG&E Gates Substation after the Diablo Canyon nuclear generating units are decommissioned and removed from service.

The Project would include construction of two Static Synchronous Compensator (STATCOM) units* (and ancillary components) that would connect to the existing PG&E Gates Substation via two new 300-foot long single circuit 500 kV transmission lines. In addition to the STATCOM units, ancillary components, and interconnection components, the Project would involve the improvement to an existing and/or the construction of a new access road.

* A STATCOM unit is a regulating device facility that keeps transmission voltages within specified parameters, reduces transmission losses, and increases transmission capacity, improving system stability and reliability.

Environmental Review

The CPUC is preparing an Initial Study to evaluate the environmental effects of the Gates 500kV Dynamic Reactive Support Project. The table below shows milestones and anticipated dates associated with the environmental review process.

Project Milestones as of May 2021
Milestone Date
Application and PEA submitted by the Applicant February 19, 2021
Application Deemed Complete March 25, 2021
Initial Study Preparation Begins April 2021
Initial Study Publication TBD (anticipated September 2021)
Public Review of IS/MND 32 days following publication
Final IS/MND
Commission Decision TBD

Documents Available for Review

Public documents related to the Project and PEA for the Gates 500 kV Dynamic Reactive Support Project can be found here:

LSPGC PTC Application
Proponent’s Environmental Assessment (PEA)

PEA Appendices:

PEA Appendix 1-A Figures
PEA Appendix 4.3 Air Quality Assessment
PEA Appendix 4.4 Biological Resources
PEA Appendix 4.6-A Fuel Use Calculations
PEA Appendix 4.7-B Paleontological Resources Technical Report
PEA Appendix 4.8-A Greenhouse Gas Screening Letter
PEA Appendix 4.7-A Preliminary Geotechnical Engineering Report
PEA Appendix 4.9-A Phase l Environmental Site Assessment
PEA Appendix 4.18-A Sacred Lands File Search Results

CPUC PEA Completeness Letter (March 25, 2021)

CPUC Data Request 1 (March 25, 2021) 
LSPGC Response to Data Request 1 (April 15, 2021) 
LSPGC Response to Data Request 1 Updated (May 12, 2021) 


Public Meetings, Questions, and Comments

As the environmental review for the Project progresses, this website will be updated to include information regarding public meetings and other opportunities for the public to present questions and provide comments on the Project.

For Additional Information

The CPUC, through its Environmental Review Team, is managing the environmental review of the Project. To request additional information, or to be added to the mailing list, please contact us:

Project email: lspgates@esassoc.com
Project voicemail: (707) 796-7002

The CPUC’s Project Manager is:

Patricia Kelly
California Public Utilities Commission
Infrastructure Planning and CEQA, Energy Division
300 Capitol Mall, 4th Floor
Sacramento, California 95814
Email: Patricia.Kelly@cpuc.ca.gov

Formal Comment Mailing Address:

California Public-Utilities Commission
Attn: Gates/ Julie Watson

c/o Environmental Science Associates
1425 N. McDowell Blvd. Ste. 200
Petaluma, CA 94954