Westlands Transmission Corridor

The Westlands Transmission Corridor project is a new 500-kV transmission line that will extend approximately 87 miles from the Gates substation to the Los Banos substation near the city of Los Banos, Calif. The new transmission line will run generally parallel to the existing Path 15 corridor from the Gates substation to a point near the city of Huron, Calif., where it would turn north through the project area to connect with the Helm substation. From the Helm substation, it would turn west and follow alongside the existing Panoche-Helm transmission corridor to rejoin Path 15 about four miles south of the Pacheco substation. From there, the alignment would run adjacent to Path 15 to the Los Banos substation. The planned line is part of the construction of the Westlands Solar Park in Frenso, CA. The facility’s anticipated output will be nearly 2,400 MW which will will need the added carrying capacity for the existing transmission infrastructure.

Project Sponsor Line Miles Voltage (kV) From State To State Year in Service
Westlands Water District 87 500 CA CA 2018
Estimated Costs ($M) Voltage Type Project Status Project Group Origin Point Destination Point
593 Suspended Westlands Competitive Renewable Energy Zone Gates Los Banos
Interstate Build Start NERC ISO/RTO Country Project Partners
2016 WECC CAISO US PG&E