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Puget Sound Energy electric transmission project
Sammamish – Juanita 115 kV transmission line
Spring 2013 project updates
- PSE is currently working on the project design for the preferred final route.The preferred final route was developed in collaboration with the stakeholder advisory group and input from the community. Review the advisory group’s Recommendations Report for a description of the siting process.
- We are working to refine the preferred final route and evaluate the different engineering alignment options and environmental impacts, including impacts to trees, streams and wetlands. Our current focus is on refining the route:
- Within the railroad corridor in Kirkland. We are coordinating with the City of Kirkland as the City develops the master plan for the Cross Kirkland Corridor. In addition, we have coordinated with the Washington State Department of Transportation to confirm there are no foreseeable conflicts with crossing Interstate 405 within the railroad corridor north of Northeast 116th Street.
- Between the buildings west of Willows Road. We have had conversations with property owners, which resulted in a possible alignment that crosses a portion of parcel that may pose permitting issues. We have met with the City of Redmond to provide an update on the alignment and discuss the City’s land use code and the permitting issues facing this route.
- Over the next few months, our consultants will be conducting additional environmental studies and considering ways to mitigate project impacts. In addition, we will continue to coordinate with city and agency staff, as well as property owners along the preferred final route.
- We continue to keep the stakeholder advisory committee informed of project progress and respond to questions and concerns from individual property owners.
- We anticipate submitting permit applications in late 2014, and expect to begin construction of the transmission line in 2015 or 2016, depending on design and permitting schedules.
- View some typical 115 kV transmission lines and poles.
To increase electric system capacity and improve reliability for customers, Puget Sound Energy plans to construct approximately 4.5 miles of 115 kilovolt (kV) transmission line from the Sammamish substation (9221 Willows Rd. NE in Redmond) to just south of the existing Juanita substation (10910 NE 132nd St. in Kirkland) to interconnect with an existing transmission line that crosses over Northeast 124th Street.
Demand for power is growing. The northern Redmond-Kirkland area electric system – referred to as the Moorlands electric system – serves a population of nearly 150,000 residential, commercial and industrial customers. The Moorlands system faces two problems – capacity (being able to supply enough power) and reliability (ensuring we can provide power during times of peak usage or when parts of the system are out of service for any reason).
The Moorlands system transmission lines currently serve 12 local substations and the system is approaching its capacity limits. As demand grows, we are reaching the capacity limits for portions of the electric system. This means under certain conditions transmission lines in the area can overload. If lines overload, nearly 150,000 customers in the northern Redmond-Kirkland area are at risk of a power outage.
By building the new Sammamish-Juanita 115 kV transmission line we can reconfigure the Moorlands system to transfer two substations to be served by another transmission system, thereby freeing up capacity on the Moorlands system. The new Sammamish-Juanita line will improve system reliability by adding an additional transmission pathway to the Moorlands system.
To learn more about the community-involved siting process for the project, review the advisory group and open house materials listed below.
For more information about this project, please email email@example.com or call our project manager, Barry Lombard, at 425-456-2230.
What is a transmission line?
Transmission lines are key elements in the electrical distribution system. The lines safely transport high voltage electricity from power generation sources like dams and wind generating facilities to substations in local communities. Transmission normally takes place at voltages of 55 kV and higher.
Committed to keeping you informed
PSE will continue to provide updates to the community. We will notify residents and businesses near the project area when construction will occur. We aim to complete the work with as little disruption as possible.
Download the information
Download these PDF files for more detail on PSE's Sammamish-Juanita 115 kV electric transmission line project.
Project update, September 2012
Project fact sheet, updated September 2012
Frequently asked questions, updated October 2012
Stakeholder Advisory Group’s Recommendations Report, October 2012
Map: PSE's preferred final route
Map: PSE's preferred final route (aerial)
Preferred final route postcard, September 2012
Oct. 3, 2012 advisory group meeting
Oct. 3, 2012 advisory group meeting summary
Oct. 3, 2012 agenda
Communications report, July 14 - Sept. 1, 2012
Communications report, Sept. 2 – 30, 2012
August 21 and 22, 2012 open houses
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
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
June 23, 2012 public meeting summary
June 20, 2012 public meeting summary
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 Alternatives 2 and 3
Photo simulations for Route Alternative 3
Photo simulations for Route Alternative 1, 2 and 3
Typical 115 kV transmission lines and poles
Electric and magnetic fields
May 16, 2012 advisory group meeting
May 16, 2012 advisory group meeting summary
May 16 advisory group presentation
Map: Stakeholder advisory group recommended route alternatives as of May 16, 2012
Map: Stakeholder advisory group recommended route alternatives as of May 16, 2012 (aerial)
Multi-Objective Decision Analysis process overview
May 16, 2012 agenda
February 2012 update
Project briefing report (Feb. 2012)
Map: Stakeholder advisory group recommended route alternatives (Feb. 2, 2012)
Map: Stakeholder advisory group recommended route alternatives (aerial)
Feb. 2, 2012 advisory group option tracking worksheet (with notes)
Process to final route decision (Revised Feb. 13, 2012)
February 2, 2012 advisory group meeting
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 route option tracking worksheet
Jan. 26, 2012 route option tracking worksheet (with notes)
Feb. 2, 2012 agenda
January 26, 2012 advisory group meeting
Jan. 26, 2012 advisory group presentation
Jan. 26, 2012 advisory group meeting summary
Jan. 26, 2012 route option tracking sheet (with notes)
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
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
Nov. 17, 2011 advisory group presentation
Nov. 17, 2011 advisory group summary
GeoRoute Model data sources and weightings (revised)
Nov. 17, 2011 agenda
November 3, 2011 advisory group meeting
Nov. 3, 2011 advisory group presentation
Nov. 3, 2011 advisory group summary
WSDOT Interstate 405, Bellevue to Lynnwood Improvement Project - Totem Lake Map (dated April 2011)
GeoRoute Model data sources and weightings
Nov. 3, 2011 agenda
October 17, 2011 advisory group meeting
Oct. 17, 2011 advisory group presentation
Oct. 17, 2011 advisory group meeting summary
Advisory group operating guidelines (final)
Oct. 17, 2011 agenda
September 29, 2011 advisory group meeting
Sept. 29, 2011 advisory group presentation
Sept. 29, 2011 advisory group meeting summary
Sept. 29, 2011 advisory group briefing report, updated Oct. 12, 2011
Sept. 29, 2011 agenda
Fact sheet, August 2011
Project map, August 2011
Project announcement postcard, September 2011
Historic project information
Note: The 2009 route options are part of the project record. At this time, PSE has not yet determined the specific route of our new transmission line. Please review the 2011 materials for the latest information.