Puget Sound Energy transmission line project
Sammamish - Juanita 115 kV transmission line
- We have received land use approvals from the City of Redmond and the City of Kirkland.
- We hosted two virtual neighborhood meetings to discuss the project with interested parties from the Cities of Redmond and Kirkland. The meetings were held prior to the Cities taking action on the project. Redmond and Kirkland interested parties had an opportunity to review the proposed project, ask questions, and provide input. Given the current coronavirus (COVID-19) public health guidelines, the meetings were held online to ensure the health and safety of staff and community members. You can view the recorded neighborhood meetings here:
- We are pursuing construction permits from the City of Redmond, the City of Kirkland and King County.
- Additionally, we are currently working with property owners to acquire necessary easements for the project. The final action public meeting was held in October 2021.
- We anticipate beginning construction in 2023.
- View some typical 115 kV transmission lines and poles.
Demand for power is growing in King County. The electric system serving Redmond and Kirkland – referred to as the Moorlands electric system – has exceeded available capacity. The Sammamish – Juanita transmission line is a critical upgrade required to increase system capacity and reliability for more than 61,000 customers in Redmond and Kirkland.
The project, which consists of adding just over five miles of new and upgraded 115 kV transmission line, upgrading aging substation equipment and looping the Totem substation, will provide the system capacity and reliability to serve future growth in both cities. Once completed, the Totem substation will be connected to two transmission lines. If one line goes out, the other line will still feed the substation and provide power to customers.
This project will ensure PSE can continue to supply customers in Redmond and Kirkland with dependable power for years to come. For more information about the project, review our project fact sheet.
How we choose the route
PSE convened a stakeholder advisory group (SAG) to help identify a route for the new transmission line. The SAG represented a diverse group of community and business leaders near the proposed project area in Redmond and Kirkland.
For nearly a year, PSE worked with the SAG and consulted the broader community through open houses and neighborhood briefings, along with reviewing public comments, to develop a technically feasible route that reflected community input. In addition to community input, PSE evaluated engineering criteria and codes and standards to identify the final route.
To learn more about the community-involved siting process for the project, review the advisory group and open house meeting information listed below.
Committed to keeping you informed
PSE works hard to minimize the impacts of critical electric infrastructure, and we are committed to keeping the affected community informed as the project progresses through permitting and into construction.
We will work with each jurisdiction to inform the community about the project as it is required through the permitting process. The project team will brief affected business and residents about the project as we move closer to construction. This includes face-to-face meetings, group briefings and presentations. If you have questions or would like to schedule a briefing for your organization, please reach out to the project team.
We welcome your questions and comments! Please contact:
Download more information
Download these PDF files for more information on PSE's Sammamish-Juanita 115 kV transmission line project.
Preferred Route Decision, September 2012
Oct. 3, 2012 advisory group meeting: Project update and recommendations report
August 21 and 22, 2012 open houses: Feedback on the recommended preferred route
- About the Project: Powering the northern Redmond-Kirkland area
- Stakeholder advisory group process
- Stakeholder advisory group members
- How we got to the recommended preferred route
- Multi-objective decision analysis
- Recommended preferred route
- Project next steps
- Map: Stakeholder advisory group-recommended preferred route (aerial)
- Map: Stakeholder advisory group-recommended preferred route (aerial Sammamish-124th)
- Map: Stakeholder advisory group-recommended preferred route (aerial 124th-I-405)
- Map: Stakeholder advisory group-recommended preferred route (aerial I-405-Juanita)
- Photo simulations of recommended preferred route
- Open house invitation postcard
- Open house advertisement
- Project fact sheet, updated August 2012
- Frequently asked questions, updated August 2012
July 18, 2012 advisory group meeting: Identifying the recommended preferred route
- July 18, 2012 advisory group meeting summary
- July 18, 2012 advisory group presentation
- Final decision criteria
- Criteria data tables (east and west of I-405)
- Multi-objective decision analysis value weighting results
- Multi-objective decision analysis scoring worksheets
- Scoring results - preferred route west of I-405
- Scoring results - preferred route east of I-405
- Commercial, multifamily, parks and other uses data (east and west of I-405)
- Cities of Kirkland and Redmond permitting process flow charts
- City of Redmond zoning code on view corridors and gateways
- City of Redmond comprehensive plan's Willows/Rose Hill neighborhood policies
- What the community is saying presentation
- Summary of comment form responses from June 2012 public meetings
- Summary of online questionnaires
- Communications report, July 3 - July 13, 2012
- Summary of communications from May 16 - July 2, 2012
- Communications report, May 16 - July 2, 2012
- Communications report, August 13, 2008 - May 16, 2012
- July 18, 2012 agenda
June 20 and 23, 2012 community meetings: Feedback on the three route alternatives
- June 23, 2012 public meeting summary
- June 20, 2012 public meeting summary
- Project newsletter
- Community meeting presentation
- Project fact sheet, updated June 2012
- Frequently asked questions, updated June 2012
- Moorlands electric system and project area
- Advisory group process and members
- Using the GeoRoute Model to develop route alternatives
- Route alternatives map
- Route alternatives 1, 2 and 3 with PSE challenges
- Advisory group route alternatives comments and concerns
- Photo simulations for Route Alternative 1
- Photo simulations for Route Alternatives 1 and 2
- Photo simulations for Route Alternative 2 and 3
- Photo simulations for Route Alternatives 3
- Photo simulations for Route Alternative 1, 2 and 3
- Typical 115 kV transmission lines and poles
- Electric and magnetic fields
- Vegetation management
- Print advertisement
May 16, 2012 advisory group meeting: Review of modified route alternatives
February 2012 update: Initial route alternatives
February 2, 2012 advisory group meeting: Selection of three route alternatives and modifications
- Feb. 2, 2012 advisory group meeting summary
- Map: Six remaining route outputs under consideration
- Map: Model outputs A2 and C2
- Map: Model outputs D1 and D2
- Map: Model outputs D3 and F1
- Map: PSE-generated model output adjustments
- Feb. 2, 2012 advisory group option tracking worksheet (completed)
- Feb. 2, 2012 agenda
January 26, 2012 advisory group meeting: Narrowing the field of GeoRoute model outputs
- Jan. 26, 2012 advisory group presentation
- Jan. 26, 2012 advisory group meeting summary
- Jan. 26, 2012 route option tracking sheet (completed)
- Maps: Western Sammamish substation sample model outputs – all route outputs and distinct outputs
- Maps: Eastern Sammamish substation sample model outputs – all route outputs and distinct outputs
- Process to final route decision
- GeoRoute Model data sources and weightings (final)
- Jan. 26, 2012 agenda
December 14, 2011 public open house: Review of sample GeoRoute model outputs and weightings
- Open house room guide
- Station 1: Delivering your energy future
- Station 2: Why is the Sammamish-Juanita 115 kV project needed?
- Station 3: PSE's approach to siting and public involvement
- Station 4: How technology is helping us develop route options
- Station 5: A snapshot of where we're at today
- Station 6: What about...?
- Station 7: Join the conversation
- Fact sheet, December 2011
- Frequently asked questions, December 2011
- Open house postcard invitation
November 17, 2011 advisory group meeting: Scenario testing the GeoRoute model and conceptual route outputs
November 3, 2011 advisory group meeting: Scenario testing the GeoRoute model
October 17, 2011 advisory group meeting: Overview of past route options and the routing model
September 29, 2011 advisory group meeting: Overview of project need and advisory group process
September 2011 project update: Convening the stakeholder advisory group
Historic project information (2008-09)
May 2009 meeting
August 2008 meeting