​​Summer Falls - P3295

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

​​​R.D. Smith (PEC 22.7) - P2926

  • Head = 52'
  • Max CFS = 1700
  • Min CFS = 200
  • Capacity MW = 6.1
  • Start Date = 09/01/82

PEC 66.0 - P3843

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.

  • Capacity MW = 6.5
  • Start Date = 09/01/90

​​​EBC 4.6 - P3842

  • Capacity MW = 9.4
  • Start Date = 10/01/85
  • Operated and Maintained by Grant County PUD

PEC Headworks - P2840

Quincy Chute - P2937

  • Head = 325'
  • Max CFS = 92
  • Min CFS = 60
  • Capacity MW = 2.4
  • Start Date = 03/01/85