Substation with blue skies behind it

Substation Electrician Apprenticeship

Substation electricians inspect, test, repair and maintain both high and medium voltage electrical equipment related to power transmission and distribution, with a specialization on substations. Tasks involve oversight of construction and commissioning of new equipment, routine maintenanceand testing, analyzing test results, troubleshooting faulty equipment,and monitoring the operation of substations. Typical work involves repairing or replacing substation equipment and components.

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Area of Study: Energy

Equipment involved in this trade includes motors, controls, circuit breakers, switches, relays, timers, transformers, wiring raceways, lighting systems, emergency generator systems, battery back-up systems, and security (both physical and electronic). Workers frequently interpret electrical schematics, wiring diagrams, and technical engineering related information. Worker should be proficient in both below-ground and above-ground designs and work in a wide range of medium to low voltages.  

Program length

  • 4 years
  • 7352 On-the-Job Hours
  • 648 Paid Related Instruction Hours


Christina Jungwirth

What are my courses?

These classes are taught in one-week blocks.

Year 1

  • Substation AC Theory, Safety, Print Reading, & Circuit Analysis
  • Substation Trade Math, Safety, Environmental Protection & Orientation to the Trade
  • Substation DC Theory, Print Reading, Safety & Circuit Analysis

Year 2

  • Substation Power System Basics
  • NEC & NESC Codes & Electrical Safety for Substation Electricians
  • Substation Motor Controls, Fluid Power & Mechanical Systems

Year 3

  • Substation Equipment Maintenance & Testing
  • Substation Relays & Protective Relaying
  • Assessment Prep•Final Assessment

Year 4

  • Substation Instrumentation & Controls
  • Substation Capstone Project: Construction, Installation, Testing & Maintenance

Classes wherever you have an internet connection. 

  • An in-person career experience, such as an internship, practicum, or credit for prior learning, may be required.
  • Some online courses may be held at specific dates/times.
Classes between the hours of 6:00 a.m. and 5:30 p.m.
Classes between the hours of 5:30 p.m. and 10:30 p.m.
A combination of online classes and Saturday and/or Sunday classes.
12 or more credits per term.
Fewer than 12 credits per term.