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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.

Introduction and Background

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/Mitigated Negative Declaration (IS/MND) 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 July 2022
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 April 2022
Public Review of IS/MND April 22, 2022 - May 23, 2022
Final IS/MND
July 13, 2022
Commission Decision TBD

Availability of the Public Draft IS/MND

Copies of the Public Draft IS/MND are available for public review at the libraries identified below and on this project website.

Fresno County Public Library
2420 Mariposa Street
Fresno, CA
Phone:(559) 600-7323

Coalinga-Huron District Library
305 N 4th Street
Coalinga, CA 93210
Phone: (559) 935-1676

Huron Public Library
36050 O Street
Huron, CA 93234
Phone: (559) 945-2284

Submitting Public Comments

The Draft IS/MND is available for public review from April 22, 2022 to May 23, 2022. Comments may be submitted via email or mail during the public review period.

Documents Available for Review

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

Notice of Completion
Final Initial Study Mitigated Negative Declaration
(July 13, 2022)
Draft Initial Study/Mitigated Negative Declaration (April 22, 2022)
Notice of Intent
(April 22, 2022)

LSPGC PTC Application  (February 19, 2021) 

Proponent’s Environmental Assessment (PEA) (February 2021)
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 (confidential not posted)

CPUC PEA Completeness Letter (March 25, 2021)

CPUC Requested Information

CPUC Initial Information Request to PG&E (December 4, 2020)
PG&E Response to Initial Data Request 1 (December 18, 2020)
PG&E Response to Initial Data Request 2 (March 24, 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)

CPUC Data Request 2 (July 8, 2021)
PG&E Response to Data Request 2

CPUC Data Request 3 (November 16, 2021)  
LSPGC Response to Data Request 3 (December 6, 2021)
PG&E Response to Data Request 3 (November 30, 2021)

CPUC Data Request 4 (November 30, 2021)
LSPGC Response to Data Request 4
(December 7, 2021)

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:

Boris Sanchez
California Public Utilities Commission
Infrastructure Planning and CEQA, Energy Division
505 Van Ness Avenue
San Francisco, California 94102
Email: Boris.Sanchez@cpuc.ca.gov

Public Comment Mailing Address:

California Public-Utilities Commission
Attn: Gates/ Michael Manka

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