Bonneville Dam Station Service Improvements


In October of 2011, Olsson Industrial Electric completed a prime contract to upgrade the Station Service electrical systems at the Bonneville Lock and Dam. Improvements included: the replacement of three double ended 480 V substations, associated medium voltage cabling, integration with GFE transformer and controls, high resistance ground systems, and panel boards. Additionally, this project included the application of temporary power sources to ensure continued power plant operations during all construction and commissioning phases.


  • Removed existing 480 V switchgear lineups
  • Designed, supplied and installed new 480 V switchgear lineups
  • Installed transformers and addition of air terminal chambers for double ended substations
  • Analyzed, designed and installed surge capacitators
  • Replaced 13.8 kV feeders
  • Installed and integrated remote operating panels
  • Installed and programmed digital protective device relays and automatic transfer controls
  • Supplied remote racking devices and training on new switchgear


  • Zero safety incidents while working in an energized power production facility
  • “Outstanding” performance rating from the U.S. Army Corps of Engineers
Client: U.S. Army Corps of Engineers
Location: Cascade Locks, Oregon
Timeline: October 2011 – March 2013
Divisions: Construction, Controls & Engineering
Value: $4,600,000


Heavy Industrial Electrical Construction
Hydro Design
Hydro Maintenance

Industry Served:

Hydroelectric & Hydropower

Area Served:

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