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Welcome
to the California Public Utilities Commission (CPUC) website for the
California Environmental Quality Act (CEQA) review of LS Power Grid
California, LLC’s (LSPGC) Collinsville 500/230 Kilovolt (kV) Substation
Project (Project). LSPGC filed an application for a Certificate of
Public Convenience and Necessity (CPCN) for the Project on July 29,
2024 (Application No. A2407018). A summary of the Project is
provided in the following section.
This website provides access to public documents and information
relevant to the CEQA review process. Information about each project
review phase
will be provided in the following sections once available.
Summary of the Project
The California Independent System Operators (CAISO) 2021-2022
Transmission Plan identified the Project as a needed upgrade
to the California electric grid. The Project is located in
Solano, Sacramento, Contra Costa, and Alameda counties within an existing
regional transmission system that provides electricity to the northern
Greater Bay Area. The main components of the Project include
the following:
- Constructing a new 500/230 kV substation ("Collinsville Substation"). The proposed substation site is located adjacent to
Stratton Lane and approximately 0.8-mile northeast of the
unincorporated community of Collinsville.
- Constructing two self-supporting segments of new 500 kV conductor
and structures roughly parallel along the approximately 1.2 mile
interconnection route (or "loop") between the proposed LSPGC
Collinsville Substation and Pacific Gas and Electric Company's
(PG&E) existing Vaca Dixon-Tesla 500 kV Transmission Line,
resulting in the addition of approximately 2.5 miles of new 500 kV
transmission lines. In addition, PG&E would install and/or modify
transposition structures at four locations along PG&E's existing
Vaca Dixon-Tesla 500 kV Transmission Line.
- Constructing a new approximately 6-mile-long,
double-circuit 230 kV transmission line that would connect the proposed
LSPGC
Collinsville Substation to PG&E’s existing Pittsburg Substation;
approximately 1.0 mile would be installed overhead, approximately 4.5
miles would be installed beneath the Sacramento-San Joaquin River Delta
waterways (6 to 15 feet below the sediment surface), and approximately
0.6 mile would be installed underground.
- Extending and connecting an existing PG&E 12 kV
distribution line to the proposed substation (approximately 0.9 mile along and parallel to the Stratton Lane).
- Constructing new telecommunications lines collocated with the new
230 kV transmission line and extending into the City of Pittsburg
(approximately 1.2 miles) and constructing a new microwave tower
immediately adjacent to the proposed substation.
- Modifying PG&E’s existing Pittsburg, Vaca Dixon, and Tesla substations, to support the
new substation interconnection. All PG&E substation modifications would occur within the existing substation footprints.
Environmental Review Process
Application and
Proponent's Environmental Assessment
LSPGC
filed Application No. A2407018 and Proponent's Environmental Assessment
(PEA) for the Project on July 29, 2024. The application is available at the CPUC Proceeding webpage. The PEA and other supporting materials are available here.
Application Review (Deficiency Reports and Data Requests)
The
CPUC submitted deficiency reports and data requests to LSPGC regarding
their application information. CPUC requests and LSPGC responses are
available here.
LSPGC's application was deemed complete on December 11, 2024. A copy of
the letter deeming their application complete is available here.
In addition, the CPUC also submitted data requests to PG&E
regarding portions of the project that would be constructed by
PG&E. CPUC requests and responses are available here.
Scoping
The
CPUC conducted scoping for the CEQA review process and accepted public
comments for a 30-day review period from January 7 through
February 6, 2025. The NOP is available here. The CPUC
held a virtual public scoping meeting on January 21, 2025.
Scoping comments received during the scoping period are available here. A copy of the Scoping Report is available here.
Draft Environmental Impact Report
The
CPUC released the Draft Environmental Impact Report (EIR) for public
review on November 4, 2025. A copy of the Notice of Availability is
available here. The Draft EIR and supporting materials are available
here.
The
CPUC held a virtual public meeting on the Draft EIR on November 18,
2025. Written comments on the Draft EIR were accepted for 45 days.
Draft EIR comments and responses are available in the Final EIR.
Final Environmental Impact Report
The CPUC released the Final EIR on March 23, 2026, available here.
Comments received on the Draft EIR and responses are
presented in Volume I of the Final EIR. Revisions to the Draft EIR and
Appendices, consistent with the responses provided in Volume I, are
presented in Volumes II and III.
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 CEQA contact list, please contact us
at:
Email:
collinsville@panoramaenv.com
Phone: (650)
290-7213
The CPUC Project Manager is:
Connie Chen, Public Utilities Regulatory Analyst
California Public Utilities Commission, Energy Division
505 Van Ness Avenue, San Francisco, CA 94102
Email:
connie.chen@cpuc.ca.gov
Phone: (415) 703-2124
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