Power System Engineer

Date: Mar 28, 2024

Location: CA

Company: Independent Electricity System Operator


Requisition ID:  19664
Location:  Mississauga 
Status:    Regular
Business Unit:  Markets & Reliability

Why join us? 

You’ve got great skills. And you want to use them in an organization where you know what you do every day matters. We get that.
We also know that ensuring Ontarians have access to affordable and reliable power doesn’t happen by accident. So we give you the tools, flexibility and support you need to achieve your goals, and development opportunities to help you grow. You’ll thrive in a collaborative, team-based environment that values your unique skills and experiences – and recognizes that when you do better, we become even better too.  

Who we are 

The Independent Electricity System Operator (IESO) works at the centre of the province’s power system, ensuring Ontarians have access to reliable and cost-effective electricity when and where they need it. We operate the province’s electricity grid 24/7, design, run and oversee the wholesale electricity markets, and plan and prepare to meet Ontario’s electricity needs – now and into the future.



The Opportunity

We are seeking a talented and driven individual to join the Reliability Tools Evolution team as a Power System Engineer. In this role, you will have the opportunity to work on the leading edge of the power sector, collaborating with teams across the IESO to help plan and implement the next generation of toolsets supporting real-time operations – ensuring safe, reliable, and cost effective operation of Ontario’s power grid.


This is a promotion-in-place (PIP) affected role, candidates with lesser qualifications would be considered for a Power System Engineer-in-Training role.


What you'll be doing

Key initiatives you will have an opportunity to contribute towards include:


  • Implementing a Wide Area Monitoring System (WAMS), that leverages Phasor Measurement Unit (PMU) data for use in validating system models and for enhancing real-time situational awareness. This includes implementing an effective training program to equip teams with necessary skills to effectively utilize WAMS and PMU data.
  • Planning and conceptualizing our next generation Energy Management System (EMS), including collaborating with diverse teams to assess current EMS capabilities and opportunities for enhancement, and ensuring alignment with evolving industry standards and technological advancements.
  • Helping to operationalize real-time grid stability assessments, including utilizing advanced analytics and modeling techniques to proactively identify and validate potential risks to system reliability.
  • Developing solutions to provide operations staff with improved access to critical information when and where they need it, such as a new real-time business rules engine, and/or real-time data analytics and visualization tools.
  • Leading or contributing to other special projects or initiatives aimed at enhancing toolsets, refining processes, or addressing specific operational challenges.


In addition to the above, please note that the job document for this position also exists across multiple areas within the IESO’s Markets and Reliability business unit. General responsibilities within the business unit for this job document are highlighted below.


The Power System Engineer conducts engineering studies and analysis by application of specialized technology in the field of power systems to support real-time operations, operations planning, reliable integration of system changes and system planning activities for the Ontario power grid; Provides analytical and technical support for the development of operating and planning policies, operating agreements, equipment specifications, operational and outage plans and system investments; Conducts model development, studies and analysis that:


  • Assess the impact of new or modified facilities and equipment on power system reliability and find solutions to integrate them into the grid;
  • contribute to the production of Operating Instructions (including identifying the limitations of the power system and prescribing mitigating actions) to be used for real-time grid operations;
  • support IESO security, adequacy and operability obligations found in the IESO Market Rules and applicable North American Electric Reliability Corporation (NERC) and North East Power Coordinating Council (NPCC) reliability standards;
  • model and validate new or modified equipment to ensure all performance requirements are met as specified in the applicable IESO Market Rules and NERC standards;
  • develop and maintain power system and security applications and models (both for real-time Operation and offline studies) for Ontario and neighbouring systems;
  • prepare next-day system operations by performing system reliability assessments for equipment outage plans submitted by market participants and neighbouring systems;
  • support the coordination with neighboring systems on NERC, NPCC and regional markets in the area of reliability matters.


What you need to succeed


  • Requires engineering knowledge of electrical theory, power system analysis and control, mathematics, computers science and the like to conduct engineering, economic or analytical studies related to the management and control of the bulk power system.  Requires knowledge of technical writing to prepare effective reports.
  • This knowledge is acquired through the completion of an engineering/applied sciences degree from an accredited university or by having the equivalent education.
  • Requires a licence to engage in the practice professional engineering in Ontario and be competent in the field of electrical engineering.


Requires lengthy exposure to the overall power system operation through progressive training in an appropriate technical field.  Requires specific experience as applicable to the particular specialty of the group. Experience will be related to the fields of:

  • utilization of generation resources
  • secure operation of bulk power system
  • reliability

Background experience will include:

  • electrical engineering design concepts as they relate to the functions and characteristics of power system components
  • analytical studies and the application of computer techniques to solve power system problems
  • familiarity with power system operation, practices, and policies
  • familiarity with electric energy  and transmission rights market operations, practices, policies, and Market Rules
  • competitive market operations
  • provincial operating and system requirements
  • particulars of power system operation, including technical features of equipment and facilities, high-tension transmission, system interconnection and methods of attaining efficiency in power production and interchange between systems
  • A period of over 6 years, up to and including 8 years is considered necessary to gain this experience.

What’s in it for you

  • Work with the top engineers in the industry and be part of a team that supports your continuous growth and development
  • Engage with power system experts across the electricity industry
  • A comprehensive training and mentorship program based on experience and theory, geared towards developing highly skilled power system engineers
  • A strong sense of accomplishment as your work not only shapes the current operation of the Ontario power grid, but sets the standard for future changes
  • Competitive salary and opportunities for promotion
  • Education assistance for programs and courses to develop and enrich staff; Flexible working arrangements
  • Team sizes to facilitate effectiveness and meaningful interaction
  • Great work-life balance with 35-hour work-weeks
  • Extra-curricular activities both on and off-site, that provide opportunities to build relationships and contribute to a positive working environment

Deadline: April 25, 2024 

For future reference, please ensure to save a copy of the job description as it will no longer be available once the posting closes.

At the IESO, we know that achieving great results depends on embracing diversity by attracting, developing and retaining people from a wide variety of backgrounds. We do this by ensuring our recruitment and advancement policies are fair and equitable, and by creating an accessible and inclusive environment – one that values every team member’s unique skills and experiences and ensures they have the support they need to achieve their potential. If you require accommodation during the recruitment process, please let us know. 

We thank you for your interest in a career at the IESO, but we will only contact those candidates selected for an interview. 

Note: The successful candidate must be eligible to work in Canada and will be subject to a background check.

The IESO offers a hybrid work model program to most of our employees, based on business needs. Individuals participating in the program can work an average of three days per week remotely within Ontario. It also offers three flex weeks when individuals can work remotely within Ontario . When working in the office, you will be located at our Mississauga location.

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