• Capacity MW = 9.4
  • Start Date = 10/01/85
  • Capacity MW = 6.5
  • Start Date = 09/01/90

To date, CB Hydropower operates and maintains five power developments - Main Canal Headworks, Summer Falls, Russell D. Smith (PEC 22.7), Eltopia Branch Canal (EBC) 4.6, and Potholes East Canal (PEC) 66.0, and provides Federal Energy Regulatory Commission (FERC) liaison support for the Quincy Chute and Potholes East Canal (PEC) Headworks power developments.  The Quincy Chute and P.E.C. Headworks facilities are operated and maintained during the initial FERC license period by Grant County Public Utility District.   

​The generation from the five power developments operated by CB Hydropower is purchased by the City of Seattle and the City of Tacoma.  The power purchase agreement term is forty years from the Date of Commercial Operation at each development.

  • Operated and Maintained by Grant County PUD

Quincy Chute - P2937

PEC Headworks - P2840

  • Head = 325'
  • Max CFS = 92
  • Min CFS = 60
  • Capacity MW = 2.4
  • Start Date = 09/30/84

PEC 66.0 - P3843

​​Summer Falls - P3295

  • Head = 165'
  • Max CFS = 8000
  • Min CFS = 1200
  • Capacity MW = 94.0
  • Start Date = 08/01/84

​​​EBC 4.6 - P3842

​​​R.D. Smith (PEC 22.7) - P2926

  • Head = 52'
  • Max CFS = 1700
  • Min CFS = 200
  • Capacity MW = 6.1
  • Start Date = 04/19/82
  • Head = 127'
  • Max CFS = 226
  • Min CFS = 65
  • Capacity MW = 2.2
  • Start Date = 03/29/83
  • Head = 42'
  • Max CFS = 8020
  • Min CFS = 1200
  • Capacity MW = 26.0
  • Start Date = 03/20/86

Main Canal Headworks - P2849

Our Licensed Hydroelectric Projects: