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Cooke Power Services

Substation Construction

  • Utility scale substations, switching stations and underground collection systems from 15 kV to 345 kV.
  • Substation additions and expansions.
  • Substation testing and commissioning.
  • NERC and FERC compliance testing.
  • Substation emergency response, including but not limited to, switching and repairs.


High Voltage Services

Cooke Power Services has extensive experience in high voltage testing, maintenance and repair services. Our service offerings range from multi-year maintenance contracts to maintaining NERC and FERC compliance to emergency call out services for switching and repairs.


  • Infrared Inspections
  • Substation Testing & Maintenance
  • Transformer Testing & Inspections
  • Transformer turns ratio
  • Insulation testing
  • Transformer insulating oil sampling & analysis
  • Transformer Replacement
  • Transformer maintenance
  • Up tower Dry Type transformer testing
  • On site transformer bushing repair
  • Cable Testing
  • Partial Discharge
  • VLF
  • Underground Cable Fault Locating (Thumper, TDR)
  • Pot Hole and Excavating of Cable
  • Cable Terminations & Repair
  • Transmission Line Inspection & Repair
  • Station battery testing
  • SF6 gas analysis
  • Fiber optic testing & repair
  • Ground Grid Testing
  • Substation Switching Services

Some past projects

Sylvester Substation

138/34.5 kV
High Voltage Construction

Downing Substation

138/12.4 kV
High Voltage Construction

1st St Substation

115/12.4 kV
High Voltage Construction

Sub 4 Substation

115/12.4 kV
High Voltage Construction

Pitts Dudik Substation

138/34.5 kV
High Voltage Construction

Ellis Substation

138/34.5 kV
High Voltage Construction

Floyd Ranch Substation

138/34.5 kV
High Voltage Construction

Blackbeard Substation

138/34.5 kV
High Voltage Construction

Zia Hills Substation

138/34.5 kV
High Voltage Construction

Camp Springs

138/34.5 kV
High Voltage Construction

Sky Ranch Substation

138/34.5 kV
High Voltage Construction

Red Lake Substation

138/34.5 kV
High Voltage Construction

Blackbeard T2 Substation

138/34.5 kV
High Voltage Construction

Chief Data Center

27 kV
Medium Voltage Construction

Steward Substation KV

115/25 kV
High Voltage Construction

Bear Data Centre

27 kV
Medium Voltage Construction

Leprino Substation

115/12.4 kV
High Voltage Construction

Hartmoore Substation

115/12.4 kV
High Voltage Construction

Janus Substation

138/34.5 kV
High Voltage Construction

Big Kahuna Substation

138/34.5 kV
High Voltage Construction

Alborz Substation

345/34.5 kV
High Voltage Construction

Alborz Data Center

27 kV
Medium Voltage Construction

Chief Data Center 27 KV

27 kV
High Voltage / Data Center Construction

Bear Data Center

27 kV
High Voltage / Data Center Construction