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 Facili-ties.” 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 Advi-sor 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#”