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Project Overview
The Westside Upgrade Project will improve grid reliability by increasing the capacity and efficiency of a critical transmission pathway. These upgrades are necessary to accommodate changing energy patterns and stabilize the system as more renewable energy flows north from California. When complete, the project will deliver more reliable and cost-effective electricity to PGE customers.
Upgrades include:
- Rewires approximately 15 miles of 230-kilovolt (kV) transmission line with advanced conductor for more capacity
- Modifies or replaces existing poles and towers, and installs new poles where needed, to accommodate the heavier advanced conductor for improved resilience
- Bifurcates 5 miles of 230-kV transmission line for increased efficiency
- Upgrades PGE’s Sherwood, Murrayhill and St Marys substations in southwest Washington County for enhanced reliability
All construction will take place within existing easements or on PGE property. Some activities may temporarily impact surrounding communities, including possible traffic disruptions. PGE and our contractors will notify affected residents and businesses ahead of time to minimize inconvenience.
Timeline
Project Start
In-Service
McLoughlin - Pearl - Sherwood
Murrayhill - Sherwood
St Marys - Murrayhill
Timeline is approximate and subject to change.
Before & After (Photo Simulations)
These photo simulations help provide an accurate and realistic depiction of a planned project. They use photography and detailed 3D renderings to create ‘before and after’ simulations of the project at different locations. Simulations consider the width of the right of way, vegetation management requirements, environmental considerations, visual impacts, and material finishes to help illustrate how the proposed project may look when it is built. Note that photo simulations are approximations for illustrative purposes and to facilitate discussion. Final engineering and construction details may change pending public, regulatory, and utility review.
There are two ways to use this tool:
- On the overview map, click the photo simulation icon at any of the locations. Click ‘view simulation’ on the photo that pops up. Click and drag the slider to see the transition between existing and proposed conditions.
- In the project segments, click the photo simulation of interest. Click and drag the slider to see the transition between existing and proposed conditions.
Transmission Structures
Existing poles and towers will be replaced or modified, and new structures will be added to accommodate the heavier advanced conductor. Structure heights may increase up to 15′ for proper ground and vegetation clearance.
Construction Updates
Construction on the McLoughlin-Pearl-Sherwood segment is expected to begin the week of September 8, 2025. Visit this webpage for updates as they become available.
Questions? Comments?
Contact PGE at PGEprojects@pgn.com.
