Project Overview

The North Quincy Cable Project is an underground transmission cable replacement project. The existing cables connect National Grid’s North Quincy Substation and National Grid’s Field Street Substation.

In recent years, National Grid has made numerous repairs to this cable system to enable continued delivery of electricity to our customers. Originally installed in 1973, these cables are nearing the end of their service life and need to be replaced. National Grid plans to replace the existing cables with new, modern cables installed within a concrete duct bank, and manhole system. Replacement of these aging cables will improve electric reliability for our area customers, and minimize maintenance and repair costs, providing the capacity to meet growing electric energy needs.

The new cables went into service in late 2023. Road restoration will begin in spring of 2025.