Lower Snake River Wind Energy

Lower Snake River Wind Energy

Location: Garfield County, Wash.

Client: Puget Sound Energy

Completion Date: 2012

Burns & McDonnell assisted in the development and design of Phase 1 of the 1,250-megawatt (MW) Lower Snake River Wind Energy Project. The project is within Garfield and Columbia counties in southeast Washington. Burns & McDonnell provided professional services for site layouts, resource assessments, preliminary engineering design and detailed engineering design.

  • Site layout
  • Resource assessment
  • Turbine selection support
  • Preliminary power collector system layout and design
  • Preliminary road, substation and transmission line design
  • Detailed road design
  • Detailed substation design
  • Detailed transmission line design

Puget Sound Energy was in the process of getting the Conditional Use Permit for the Lower Snake River Wind Energy Project when it called on Burns & McDonnell to assist in development and design. The project was permitted for up to 1,250 MW of wind generating capacity and was located within Garfield and Columbia counties in southeast Washington.

Phase 1 of the project was initially scoped to be 250 MW but was increased to 342.7 MW using 149 Siemens SWT-2.3-101 turbines. As part of the project development, Burns & McDonnell provided professional services for site layouts, resource assessments, and preliminary collector system, substation, and transmission line design. The project swiftly moved into detailed design as the construction timeline was shortened. Burns & McDonnell's scope included detailed design of the roads, substation and transmission line. Phase 1 was completed in early 2012.

  • 1,250-MW wind project, the largest announced project in the U.S. at the time
  • Project development assistance
  • Detailed engineering design