King Substation Improvement Project

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Project Introduction

The purpose of this project is to upgrade the existing King Substation, located near Oracle Park’s northeast entrance at 2nd Street and King Street, to provide sufficient electrical power for the Muni light rail service. With the new developments and projects in the surrounding area, including Central Subway, and the Warriors Chase Center, the N and T light rail service is expected to increase. By upgrading the electrical distribution circuits and creating spare electrical circuits, the updated substation will increase the electrocity supply to meet the demand.

Related Work at these Locations:

  • At the intersection of 2nd Street and King Street

  • Along Embarcadero from King Street up to Howard Street

  • Along King Street from 2nd Street up to 6th Street

  • Along 4th Street from King Street up to Bryant Street

Scope of Work:

  • Install conduits across King Street

  • Install temporary electrical substation

  • Remove existing internal electrical substation components

  • Minor modifications to existing substation building

  • Install new substation equipment in building

  • Install underground cables along Embarcadero, King Street and 4th Street

Key Construction Information:

  • Minor mobilization activities took place in May 2018.

  • Construction activities began in June 2018.

  • Parking spaces will be temporarily closed as needed during construction. (Please see the construction signs for exact locations and times.).

  • Lane closures will be in effect during some of the construction. Access will be maintained for public usage.

  • In order to avoid impacts to normal Muni operations in the area, certain activities may be scheduled during late night hours when Muni is not running:

    • Monday – Friday 1:30 am to 3:30 am

    • Saturday 1:30 am to 4:30 am

    • Sunday 1:30 am to 6:30 am

  • Construction work is anticipated to be completed in summer 2021.

Project Timeline
January 2018
Completion of Design
April 2018
Award Contract
June 2018 - June 2019
Contact Information
Jay Lu, Public Relations Officer