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Columbia Solar Project

Application No. 2017-01

Project Background

The Columbia Solar Project is an alternative energy proposal by TUUSSO Energy, LLC (TUUSSO). The proposed Columbia Solar Application for Site Certification (ASC) proposes to construct five new photovoltaic (PV) facilities at five site locations in Kittitas County, Washington. Two generation tie lines would also be constructed. Each new PV solar array would be capable of providing up to 5 Megawatts (MW) of solar energy within the Puget Sound Energy (PSE) service area, for a total of 25 MWac of electrical power generation. The five solar arrays and two generation tie lines are to be constructed on 200 of approximately 232 leased acres within Kittitas County. The five solar project sites are named as follows:

  • Camas
  • Fumaria
  • Penstemon
  • Typha
  • Urtica

The Kittitas Valley is one of the sunniest areas of the state, and the array sites are in close proximity to existing PSE electrical infrastructure. The locations selected by the applicant were based on several criteria, including consistency with the Kittitas County zoning code and comprehensive plan, land use efficiencies, placement on previously disturbed farmland to avoid environmentally sensitive areas, and the minimization of new electrical infrastructure by locating close to existing distribution lines.


Tuusso Energy, LLC
500 Yale Avenue North
Seattle, WA 98109
(206) 303-0198


Valley Land Company, LLC
1585 Tjossem Road
Ellensburg, WA 98926

Site location map

If you would like to be added to the project mailing list, please send an email to

For information or questions concerning this application please contact:

Sonia Bumpus, EFSEC Siting and Compliance Manager
Energy Facility Site Evaluation Council
PO Box 47250
Olympia, WA 98504-7250
((360) 664-1363

Important Note: Public comments submitted to the Council via the internet or in writing become public records under the Washington State Public Records Act (RCW 42.17). Information included in the comment such as the commenter's e-mail and mailing address becomes a public record once it is provided to EFSEC and may be subject to public inspection and copying if not protected by federal or state law. For additional information please see our Privacy Notice

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Recent Activity

10-19-18 Signed SCA's

10-17-18 Governor Inslee's decision letter

08-21-18 EFSEC Council Recommendation to the Governor Packet

07-17-18 TVW live broadcast of EFSEC Council Meeting

07-12-18 Press release

05-29-18 Proposed Draft Site Certification Agreements

05-23-18 Extension Request Letter

05-18-18 Objection to Order Granting Expedited Processing  and Attachment- Save our Farms, LLC

04-18-18 Revised MDNS

04-17-18 Order Granting Expedited Processing

04-09-18 Site Tour route map

04-05-18 Site Tour Agenda

04-02-18 Site Tour Notice

03-13-18 EFSEC Monthly Council Meeting Agenda

02-27-18 Mitigated Determination of Non-Significance (Comment period closed 3-13-18)

02-12-18 Applicant letter requesting extension for expedited permitting

01-26-18 Revised ASC submitted

12-22-17 Kittitas County's Brief on Land Use Consistency

12-21-17 Applicant's cover letter and Supplemental Legal Memorandum

12-12-17 Public Notice (Closed 12/22/17)

12-12-17 Power Point presentations from the Dec. 12 Public Informational Meeting and Land Use Hearing

12-12-17 Applicant's Land Use Legal Memorandum received

12-6-17 Agenda for Informational Public Hearing and Land Use Consistency Hearing

12-1-17 Notice for Informational Public Hearing and Land Use Consistency Hearing

10-16-17 Application received

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