San Diego Gas & Electric Suncrest 230kV Loop-in Project
Filing Date: May 8, 2026
CPUC Application No.: 26-05-****
Proposed Project: San Diego Gas & Electric Company (SDG&E) has filed an Application
with the California Public Utilities Commission (CPUC) for a Permit to
Construct the Suncrest 230kV Loop-in Project (Proposed Project). As proposed by
SDG&E, and further described in the Administrative Draft Environmental Impact
Report (Administrative Draft EIR), the Proposed Project includes the following elements:
Installing a 14.5-mile double-circuit 230 kV transmission line to loop SDG&E’s
TL23021 into Suncrest Substation, enhancing system reliability and increasing
transmission capacity for energy imports by 2032.
Transmission Line:
• Western Underground Segment: ~3.1 miles in duct banks from TL23021 to riser
structures near Canyon Rim Drive.
• Overhead Segment: ~11 miles supported by ~67 tubular steel poles.
• Eastern Underground Segment: ~0.5 miles in duct banks terminating at Suncrest
Substation.
• Additional Work: Relocation of four distribution poles.
• Suncrest Substation Modifications:
• Install 500/230 kV transformer bank (Bank 82) with foundations, containment,
and firewalls.
• Install 12 kV tertiary reactors, including circuit breakers, disconnects, bus
supports, and voltage transformers.
• Install communication/protection devices, conduits, and support structures.
• Construct a 230 kV bay for TL23021 loop-in.
• All work within existing substation property.
The project addresses CAISO-identified transmission deficiencies by adding a
new supply path to Greater San Diego County.
Environmental Assessment: SDG&E has prepared an Administrative Draft EIR
that includes the analysis of potential environmental impacts created by the
construction, operation and maintenance of the proposed transmission line and
associated facilities including work at the Suncrest Substation.
Electric Magnetic Field (EMF) Management: SDG&E will employ measures to reduce
public exposure to EMF in accordance with CPUC Decisions 93-11-013 and
06-01-042 and SDG&E’s “EMF Design Guidelines for Transmission, Distribution,
and Substation Facilities.” SDG&E has filed a copy of its Magnetic Field Management
Plan for this Proposed Project as part of its Application.
Public Participation
The public may communicate their views regarding the application by writing
to the CPUC at 505 Van Ness Avenue, San Francisco, CA 94102, or by emailing the
Public Advisor at public.advisor@cpuc.ca.gov or call 1-866-849-8390 (toll-free) or
(415) 703-2074. In addition, the CPUC may, at its discretion, hold a public participation
hearing to take oral public comment.
The public may obtain party status by filing a protest to the application 30 days after
the Notice of the Application appears in the CPUC daily calendar or by making
a motion for party status.
Document Subscription Service: To sign up to receive notification of documents
filed in this proceeding (or other CPUC matters), visit www.cpuc.ca.gov/subscription.
The free online subscription service sends subscribers an email notification
when any document meeting their subscription criteria is published on the
CPUC’s website.
Contacts: To review a copy of SDG&E’s application, or to request further information
about the Proposed Project:
Call: 1-844-765-6388 (Project Information Line)
Public Affairs: Jennifer Ramp jramp@sdge.com
Website: https://www.sdge.com/suncrest-230kv-loop-project
Copies of this notice and application will be available for viewing and printing on
the SDG&E website at: http://www.sdge.com/proceedings
5/15, 5/22/26
CNS-4043008#