Perennial Wind Chaser Station is approved to be a natural gas facility comprised of up to four turbines with a maximum capacity of 415 megawatts.
Under Review/Approved. The facility has not yet been built. In accordance with the existing site certificate, construction must begin three years after the effective date of the site certificate (that is, before September 23, 2018) and construction must be completed by September 23, 2021. On August 2, 2018 the Department received a preliminary request for amendment (pRFA), through which the certificate holder requests to extend each of the construction deadlines. In its pRFA, the certificate holder included a Type B review amendment determination request (ADR) and requested Department consideration of the Type B amendment review path based on the information included in pRFA. On August 22, 2018, the Department issued its determination that Type A review is the appropriate review process for the pRFA. The Department is reviewing the pRFA for completeness.
Western Umatilla County, on approximately 20 acres adjacent to the existing Hermiston Generating Plant. PDF Map | Online Map
Applicant/Certificate holder: Perennial-WindChaser LLC, a wholly-owned subsidiary of Perennial Power Holdings, Inc., which is a wholly-owned subsidiary of Sumitomo Corporation and Sumitomo Corporation of America.
ODOE contact: Katie Clifford
Applicant/Certificate holder contact: JJ Jamieson

Project Amendment(s)


Project Timeline

Preliminary Application Received
Complete Application
​Contact the Facility Siting Team:
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Exhibit Files Reference

  • Exhibit A: Applicant Information 
  • Exhibit B: Project Description
  • Exhibit C: Property Location and Maps
  • Exhibit D: Organizational Information
  • Exhibit E​: Permits Required
  • Exhibit F: Property Ownership 
  • Exhibit G: Materials Analysis
  • Exhibit H: Geology and Soil Stability 
  • Exhibit I: Soils
  • Exhibit J: Wetlands
  • Exhibit K: Land Use
  • Exhibit L: Protected Areas
  • Exhibit M: Financial Analysis
  • Exhibit N​: Non-generating Facility Information
  • Exhibit O: Water Requirements
  • Exhibit P: Fish Wildlife Habitat 
  • Exhibit Q: Threatened and Endangered Plants and Animals
  • Exhibit R: Scenic Aesthetic Values 
  • Exhibit S: Cultural Resources
  • Exhibit T: Recreational Facilities 
  • Exhibit U: Public Services
  • Exhibit V​: Waste Minimization 
  • Exhibit W: Site Restoration
  • Exhibit X: Noise 
  • Exhibit Y: Carbon Dioxide Emissions 
  • Exhibit Z: Cooling Towers  
  • Exhibit AA: EMFs – Electric and Magnetic Fields
  • Exhibit BB: Other Information
  • Exhibit CC: Additional Statutes Rules Ordinances
  • Exhibit DD​: Other Specific Standards