The Manning 500/230 kV Substation Project was awarded to LS Power Grid California, LLC in 2023 through a competitive solicitation conducted by CAISO for its 2021-22 Transmission Planning Process.  This policy-driven project will enable the advancement of renewable generation within the Westlands/San Joaquin area and address overloads on PG&E’s 230 kV system. The Project is located in Fresno County, California with a planned in-service date of 2028.

The Project includes a new 500/230 kV Manning substation and approximately ten miles of new 230 kV overhead transmission lines from the new Manning substation to PG&E’s Tranquility substation. Additionally, PG&E’s Los Banos to Midway #2 500 kV line, Los Banos to Gates #1 500 kV line, and Panoche to Tranquility #1 and #2 230kV lines will be looped into the Manning substation.

• California Public Utilities Commission Manning Project Webpage
• (Updated) NOTICE OF APPLICATION FOR A CERTIFICATE OF PUBLIC CONVENIENCE AND NECESSITY AUTHORIZING CONSTRUCTION OF THE MANNING 500/230 KV SUBSTATION PROJECT
• (Updated) AVISO DE SOLICITUD DE CERTIFICADO DE CONVENIENCIA Y NECESIDAD PÚBLICA AUTORIZACIÓN DE LA CONSTRUCCIÓN DEL PROYECTO SUBESTACIÓN MANNING 500/230 KV
• NOTICE OF APPLICATION FOR A CERTIFICATE OF PUBLIC CONVENIENCE AND NECESSITY AUTHORIZING CONSTRUCTION OF THE MANNING 500/230 KV SUBSTATION PROJECT
• AVISO DE SOLICITUD DE CERTIFICADO DE CONVENIENCIA Y NECESIDAD PÚBLICA AUTORIZACIÓN DE LA CONSTRUCCIÓN DEL PROYECTO SUBESTACIÓN MANNING 500/230 KV

• LS Power Selected by California ISO for Transmission Projects Collinsville & Manning
• Approved Project Sponsor for the Manning 500 kV Substation Project