Ontario Power Generation (OPG) Interview Experiences
Mechanical Engineer
Oshawa, ON
Summer 2026Accepted
Ontario Tech University · Mechanical Engineering
3rd year · 3.3-3.6 GPA · 1 past internship
Easy Interview
BehavioralIn-PersonSlow processMultiple rounds
Talk about a time you worked under a tight deadline, a time you solved a problem with limited info. That kind of thing. Behavioral panel with two senior engineers, behavioral questions the whole way. Process took 5 weeks, they warned about that upfront. Security access forms added more time after
Questions Asked
1.“Walk me through the three modes of heat transfer and when each dominates”
2.“Describe a time you collaborated with manufacturing or production on a design that had to change”
Electrical Engineer
Oshawa, ON
Summer 2025No Offer
Queen's University · Electrical Engineering
4th year · 3.7+ GPA · 2 past internships
Easy Interview
BehavioralMultiple roundsSlow processStressful
Really wanted this one got so upset when i didnt get it. Applied January, screening call mid February, panel late March, rejection in April. The wait between each step was brutal. Panel was safety culture and behavioral with three people.
Questions Asked
1.“What's the difference between AC and DC power? When is each preferred”
2.“What is electromagnetic interference and how do you design to reduce it?”
3.“Explain the concept of power system transient stability.”
Electrical Engineer
Toronto, ON
Summer 2026No Offer
Ontario Tech University · Electrical Engineering
3rd year · 2.9-3.2 GPA · 1 past internship
Average Interview
TechnicalBehavioralVirtualMultiple rounds
Was not prepared for how safety heavy this interview would be. Power systems theory and transformer fundamentals then a safety scenario on working near live electrical equipment. Technical panel after a quick HR screen
Questions Asked
1.“Walk me through the design of a basic DC regulated power supply”
2.“Explain what a PLC is and how it's used in industrial control systems”