Harrison Substation Upgrades

Learn how we’re strengthening the energy grid and improving service for you.

As we work toward Oregon’s clean energy future, we’re strengthening the energy grid to make it smarter, more efficient and more reliable for you. Among our many improvement projects, we’re planning to upgrade our Harrison substation and nearby underground power lines later this fall. We anticipate completing the first phase of this project in early 2020.

First, we’re going to verify the location of underground utilities

In September, our crews will begin core drilling, which involves cutting into the sidewalks so we can verify both the location and the depth of the different pipes and cables. As soon as we’re done checking a hole, we’ll patch it closed until we start our underground line work later this fall.

Harrison substation map

Work schedule

Core drilling

  • Hours will vary but may include daytime and nighttime work
  • Mid-September through October

Underground and substation construction

  • Hours will vary but may include daytime and nighttime work
  • November through early 2020

What can you expect during this work?

  • Your home will continue to have service while we’re doing this work.
  • There is a bus stop close to where we will be working, so you may want to allow extra time to access the stop during construction.
  • Beginning in September, crews will conduct core drilling to verify the location of underground utilities.
  • Later in the fall, crews will cut into sidewalks and create trenches, install larger underground vaults and new conduit for the new underground lines. During non-work hours, we will cover these areas with steel plates for safety.
  • This is mostly underground work, but there is a small section where we will work on overhead lines.
  • We will work both inside and outside the substation fence.
  • This work involves digging with heavy equipment. At times, we may need to park some equipment on the street overnight.

Important traffic and safety tips

We’re taking steps to ensure your safety as we work in your neighborhood. Here’s how you can help:

  • Watch for temporary lane or street closures that may be needed. Allow extra time for commuting through these areas.
  • Follow directions from any flaggers, detours and signs used to keep drivers, cyclists, pedestrians and workers safe.
  • Please avoid all work areas and equipment, and make sure children know to never touch the equipment.

Building a brighter energy future for you

We’ll share more details about the substation and power line upgrades in the coming months as we finalize our plans and design. These upgrades will boost reliability to reduce the risk of outages, keep pace with growth in our region and improve overall system operations for all customers. This is just one of many projects we’re working on to enhance and modernize the energy grid, making it smarter and more resilient, and creating a platform for a clean energy future.

Thank you for your patience as we strengthen the energy grid.