San Diego Gas & Electric (SDG&E) on Sept. 25 said that the new 15-mile, 230-kV Sycamore to Peñasquitos electric transmission line built in north-central San Diego, Calif., to enhance overall reliability for 3.6 million residents has been energized.
Construction on the line began in early 2017, the company said.
SDG&E Communications Manager Allison Torres on Oct. 3 told TransmissionHub that the line was energized on Aug. 29, and that the project cost about $260m.
David Geier, senior vice president of electric operations for SDG&E, said in the statement, in part, that the line “will improve California’s power grid and ensure our region remains resilient and prepared for the increasing amount of renewable energy we continue to deliver.”
The new line acts as a highway, SDG&E said, noting that adding a new pathway to the regional power grid creates an additional means for energy to reach customers, while enhancing reliability in such communities as Mira Mesa, Scripps Ranch and the city of Poway. The line also helps alleviate traffic locally so that energy can reach other parts of the region quicker, according to the company.
The California ISO and a statewide task force, requested by California Gov. Edmund Brown Jr., identified the project as essential to ensuring long-term reliability due to the planned retirement of coastal power plants and the closure of the San Onofre Nuclear Generating Station, the company said.