Transmission Options and Potential Corridor Designations in Southern California
in Response to Closure of San Onofre Nuclear Generating Stations (SONGS):
Environmental Feasibility Analysis

Cover of report

Publication Number: CEC-700-2014-002
Report Date: May 2014



Transmission Options and Potential Corridor Designations in Southern California in Response to Closure of San Onofre Nuclear Generating Stations (SONGS): Environmental Feasibility Analysis.
Consultant Report. (PDF file, 163 pages, 8.13 MB)

Addendum to Transmission Options and Potential Corridor Designations in Southern California in Response to Closure of San Onofre Nuclear Generating Station (SONGS).
Consultant Report. (PDF file, 41 pages, 4.7 MB)

 

Appendices
 


Abstract

This consultant report provides a high‐level assessment of the environmental feasibility of a number of electric transmission alternatives under consideration by the California Independent System Operator in response to the closure of the San Onofre Nuclear Generating Station in June 2013. These alternatives may be considered by California Energy Commission staff for potential electric transmission corridor designation. While the alternatives examined may provide electrical solutions for addressing challenges arising from the closure of the San Onofre Nuclear Generating Station, this report presents and examines the likely siting constraints that may have to be considered during the environmental permitting process for each potential alternative.

Both alternating current and direct current corridor alternatives were examined, along with several potential submarine high‐voltage direct current alternatives.

The alternatives were ranked on a qualitative four‐step scale that ranges from possible, possible but challenging, challenging, to very challenging.