Who We Are

Andrew Humphrey Engineering, LLC is a boutique electric power engineering firm. Our years of engineering experience in the office and field span across multiple industries including electric power, oil and gas, water treatment, mining, railroad, casino, and renewable energy. We offer competitive rates and focus on providing the highest level of service and value to our clients.


Andrew Humphrey Engineering, LLC is driven by the desire to see client's projects completed successfully. A successful project to us is one that works as designed and meets our client’s requirements for budget, schedule and quality. Oftentimes for design and commissioning work, this means performing startup and commissioning alongside the client. Our job is only complete when every control wire is accounted for, verified, and carefully documented. On upgrade projects, we like to walk away knowing that we have improved the electrical system by untangling existing issues, integrating modern equipment and ensuring electrical reliability and safety for years to come. Our greatest satisfactions are working with a client over the course of a project and achieving a successful startup or getting feedback that the work we did was of value to the client.



  • Substation and plant electrical design
  • Equipment specification
  • Relaying and system protection
  • System studies:  short-circuit, coordination, arc-flash/hazard analysis, power flow, motor-starting and voltage-drop, harmonics, insulation coordination, transient stability and complete protection system assessments
  • Management of interconnection applications and/or expert technical support during scoping meetings
  • Supervisory Control and Data Acquisition (SCADA), including equipment specification, communication architecture design, programming, implementation, and troubleshooting
  • Field engineering:  startup and commissioning, relay testing, troubleshooting, and owner’s representation during construction



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