Mainwaring Substation Upgrade

Mainwaring Substation Upgrade

We’re working to upgrade the Mainwaring Substation to increase electrical system reliability, replace near end-of-life equipment, and prepare for growth.

What's new

Open house

We've finished a review of the project scope and have confirmed the changes that we'll be making to Mainwaring substation.

We invite you to join us at an open house to learn more about the project and to provide feedback to us as we advance the project:

Date: Wednesday, September 15, 2021
Time: 6:30 p.m. to 7:30 p.m.
Where: Virtual meeting via Microsoft Team

To register, email by 12 p.m. on September 15 and we’ll provide you the meeting link.

Mainwaring Substation provides reliable electricity supply to over 60,000 homes and businesses in East Vancouver, and it needs some upgrades to replace aging equipment.

Key components of the project include replacing two transformers and associated equipment, construction of a new two-story GIS building to house new duct banks, and removal of existing outdoor feeder sections. After project completion, landscaping at the site will be completed, as required. A rendering of the new building on the southwest corner of the substation is shown below.

Mainwaring substation post-implementation

This upgrade is subject to regulatory review by the BC Utilities Commission (BCUC). We will submit a detailed upgrade plan to the BCUC in fall 2021. We expect site preparation to start in late 2022 with the main construction work starting in 2023. The expected in-service date is summer 2026.

Mainwaring Substation is a distribution substation built in the 1950s. The substation is located at 6450 Inverness Street at the intersection of Inverness Street and 47th Avenue. The closest major intersection is Knight Street and 49th Avenue.

Mainwaring Substation takes electricity at a higher voltage (230 kilovolts) and converts to 12 kilovolts to supply power to homes and businesses in the neighbourhood.

Over 60,000 customers are being served by Mainwaring substation. The current area Mainwaring substation serves is west to Cambie Street, east to Boundary Road, and north to 12th Avenue.

This upgrade will provide increased reliability to the electrical system and replace aging equipment that's nearing end-of-life. This upgrade will also prepare for future growth in the area by modifying the substation layout to better prepare for future upgrades.

Reports & documents

Mainwaring Substation project update letter – July 2019 [PDF, 112 KB]

Mainwaring Substation upgrade factsheet – August 2019 [PDF, 313 KB]

Change notification [PDF, 63 KB]

604 623 4472
Toll free: 1 866 647 3334