We’ll keep the latest project documents here, to keep you informed about the project from start to finish. 

Meeting Materials

Open House and Community Advisory Group meeting materials are available on the Meeting Materials page.

Project Materials

Spring 2015 Fact Sheet

Spring 2015 FAQs

Spring 2015 Quick Facts

Summer 2015 Fieldwork Fact Sheet

Spring 2015 Underground Transmission Line Fact Sheet

Community Advisory Group Final Report

Winter 2015 Newsletter

2014 Public Communications Summaries

2014 Spring-Summer Community Events Outreach Summary

Summer 2014 Newsletter

Spring 2014 Sub-Area Committee Online Survey Summary

December 2013 Newsletter

Presentations and Videos

Presentations and videos are available on the Videos page.

Project Studies

Puget Sound Energy has commissioned several studies to help guide our project development and route selection processes for the Energize Eastside project. Below is a list of studies we have either completed or are in the process of completing. As studies are completed, we will provide the link to the full report below.

Study Type Study Author Description Status

Needs assessment executive summary

Needs assessment report (redacted)* 2013

Supplemental needs assessment report (redacted)* 2015



Explains the need for the Energize Eastside project



Solutions report executive summary

Solutions report (redacted)* 2014

Supplemental solutions report (redacted)* 2015



Describes potential options for solving the identified problem, and details the preferred solution


Opportunity and constraints executive summary

Opportunity and constraints report


Details how PSE identified the project study area, identified potential route segments and narrowed down route segments to the ones presented to the public


Non-wires solution analysis


Explores the feasibility of solving the identified problem without constructing a new transmission line


Underground feasibility study
- Appendix A - Aerial Route Drawings (part 1)
- Appendix A - Aerial Route Drawings (part 2)
- Appendix B - Typical Detail Drawings

Power Engineers

Describes the feasibility of installing the transmission line underground


Review of the PSE Transmission Vegetation Management Program

CN Utility

Evaluates PSE’s tree maintenance program as it relates to North American Electric Reliability (NERC) standards, and details necessary tree maintenance along the various route segments to meet NERC standards


Electric and magnetic fields (EMF) modeling study

Power Engineers

Measures EMF readings along the various route segments with existing power lines and analyzes how those readings could change with the addition of a future 230 kV line


Submarine cable feasibility study

Power Engineers

Describes the feasibility of installing the transmission line underwater


*The redacted version is being shared because the full report contains Critical Energy Infrastructure Information that cannot be shared publicly according to the Federal Energy Regulation Commission. For rule details, please visit this link. The redacted information does not change the overall conclusions of the reports.


**Additional reports may be completed as necessary to support the environmental review process.