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

CB Hydropower performs operation, maintenance, and administrative functions for five hydropower projects owned by the Districts - Main Canal Headworks, Summer Falls, Russell D. Smith, Eltopia Branch Canal (E.B.C.) 4.6, and Potholes East Canal (P.E.C.) 66.0.  The generation from the five power developments operated and maintained by CB Hydropower is purchased by the City of Seattle and the City of Tacoma under forty-year power purchase agreement from the date of commercial operation.

​CB Hydropower provides Federal Energy Regulatory Commission (FERC) liaison support and administrative functions for two additional plants owned by the Districts - Quincy Chute and Potholes East Canal (P.E.C.) Headworks.  Grant County Public Utility District operates and maintains the projects under forty-year purchase agreement from the date of commercial operation.

  • 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 = 03/01/85

PEC 66.0 - P3843

​​Summer Falls - P3295

  • Head = 165'
  • Max CFS = 8000
  • Min CFS = 1200
  • Capacity MW = 92.0
  • Start Date = 01/01/85

​​​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 = 09/01/82
  • Head = 127'
  • Max CFS = 226
  • Min CFS = 65
  • Capacity MW = 2.2
  • Start Date = 05/01/83
  • Head = 42'
  • Max CFS = 8020
  • Min CFS = 1200
  • Capacity MW = 26.0
  • Start Date = 01/01/87

Main Canal Headworks - P2849

Our Licensed Hydroelectric Projects: