Southern California Edison to build $464 million transmission project

The in-service date for Southern California Edison’s (SCE) about $464 million (constant 2017 dollars) Alberhill System Project is June 2021, a company official told TransmissionHub on Feb. 14.

According to the company’s website, the project will help meet growing electricity demand in western Riverside County, as well as improve service reliability and operational flexibility by providing the ability to transfer load between substations.

Components of the project include a new 500/115-kV transmission substation, two new 500-kV line segments, a new 115-kV sub-transmission line, and modifications to existing sub-transmission lines, the site noted.

According to the California Public Utilities Commission’s website for the California Environmental Quality Act (CEQA) review of the project’s proposed construction, an application for the project was submitted to the commission in September 2009. SCE filed an amendment to the application in March 2010, and in April 2011, the company filed amended sections of the Proponent’s Environmental Assessment (PEA).

The commission added that the amended sections of the PEA propose modifications to the two 500-kV transmission line alignments included in the original PEA. The modified alignments would avoid the Lake Mathews-Estelle Mountain Stephens’ Kangaroo Rat core reserve, the commission noted.

The commission said that it determined that it would be in the public’s best interest to consolidate the CEQA analyses for the SCE Valley-Ivyglen Subtransmission Project petition for modification (PFM) application and the proposed Alberhill Project certificate of public convenience and necessity (CPCN) application into a single CEQA document.

According to SCE’s website, the Valley-Ivyglen Project will help maintain reliability for current and projected electricity demand in southwestern Riverside County.

The site noted that that project includes construction of about 25 miles of new 115-kV sub-transmission lines between SCE’s Valley substation in Menifee and the Ivyglen substation in unincorporated Riverside County; new electrical facilities at the existing Fogarty substation, which will allow the substation to be fully operational; and installation of about 25 miles of fiber optic telecommunication lines between the Valley and Ivyglen substations.

The commission noted on its website that the final environmental impact report for both projects was released last April.

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Corina Rivera-Linares, chief analyst for TransmissionHub, has covered the U.S. power industry for the past 10 years. Before joining TransmissionHub, Corina covered renewable energy and environmental issues, as well as transmission, generation, regulation, legislation and ISO/RTO matters at SNL Financial. She has also covered such topics as health, politics and education for weekly newspapers and national magazines. She can be reached at .

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