Kwalsa and Upper Stave Hydroelectric Project

Kwalsa and Upper Stave Hydroelectric Project

Kwalsa and Upper Stave Hydroelectric Projects


  • 150 MW Run-of-River Hydropower
  • Project Identification and Optimization
  • Geotechnical and Site Investigations
  • Terrain Hazard Assessment
  • Detailed Design and Construction Supervision
  • Hydraulic Modeling
  • Project Management
  • Construction Quality Assurance

Client: Peter Kiewit Infrastructure Co. and Cloudworks Energy Inc.

Location: Mission, British Columbia, Canada

Completion Date: 2010

Project Description: The Kwalsa and Upper Stave Hydroelectric project is a renewable energy development that includes six hydroelectric facilities and interconnecting 138 kV transmission line. The total installed capacity of the six facilities is 150 MW. Four of the facilities are located in the upper Harrison Lake area and the other two facilities are located in the Upper Stave River catchment area about 50 km north of Mission, British Columbia, Canada

Knight Piésold’s Role: The Owner, Contractor, Douglas First Nation and Knight Piésold worked closely together to develop two low impact hydroelectric projects overcoming unique challenges while delivering under budget and ahead of schedule.

Knight Piésold initially worked for the Owner (Cloudworks Energy Inc.) in identifying a number of potential hydroelectric sites for development, and then worked directly for the EPC contractor, Peter Kiewit Infrastructure Co., regarding all aspects of detailed design as well as construction quality assurance. The power produced by the facilities is integral in helping British Columbia attain its self-sufficiency and clean energy goals.

In 2011, the design for the Upper Stave Hydroelectric Project received an Award of Merit from the Consulting Engineers of British Columbia (CEBC).