Power System Planning Analyst

Date: December 10, 2025

Location: Toronto, ON

Requisition ID: 20778

Status: Temporary, up to 18 months

Business Unit: Power System Development

Why join us?

The IESO is committed to ensuring Ontario’s electricity system meets the province’s needs today and into the future. We are charged with purpose, delivering reliable, affordable, and sustainable electricity for homes, businesses, and communities across the province. We are energized to grow, embracing opportunities to shape the future of a dynamic and evolving energy sector while advancing our careers. We are powered by teamwork, supported by diverse and passionate colleagues who foster respect, celebrate successes, and thrive on shared achievements. At the IESO, it’s not just what we do—it’s who we are! 

Who we are

Our central role includes managing the provincial power grid in real-time, overseeing and evolving Ontario’s electricity market, engaging with government, municipalities and Indigenous communities, and planning for Ontario’s future electricity needs. Our employees play a key role in driving grid innovation, protecting the system from threats, advancing the province’s energy conservation programs, and forecasting and procuring the electricity resources we’ll need in the decades to come. 

This role is a part of the Operations Models & Forecast team which is a part of the larger demand forecast & conservation integration group - Demand & Conservation Planning.  The Demand & Conservation Planning group develops electricity demand & energy forecasts for all time frames for the IESO, ranging from the short term – the 0 to 10 day-ahead forecasts, the medium term 18 months – 5yrs, and the long-term forecasts going out 20 years.

The Operations Models & Forecasts team is tasked to support the short-term aspect of electricity demand forecasts and works on maintaining the models & forecasts, data streams and work with our vendors who supply weather forecasts & variable generation forecasts. 

What makes this role exciting

The energy sector is rapidly evolving, offering exciting new opportunities for those who want to make a difference.

The Power System Planning Analyst will support power system plan development and preparation in one of three integrated planning streams (Transmission, Resource or Conservation and Demand). The Power System Planning Analyst is responsible for supporting the necessary research and analysis involved in the development of integrated electricity system plans and supporting their implementation to advance and inform decision making at the IESO to ensure system reliability. This may include interactions with relevant parties and participation in the stakeholder engagement, regulatory, and procurement processes.

Specifically for the Operational Models & Forecasts team, we are looking for a Power System Planning Analyst with a strong data science skillset to help the IESO discover the information hidden in vast amounts of data and help us make smarter decisions to deliver even better products. The Power System Planning Analyst will play a key role in supporting the development and maintenance of the current 0-10 day ahead electricity demand models and electricity demand forecasts. 

What you’ll do

In this role, you’ll make a meaningful impact by contributing to the IESO team and supporting the electricity needs of the province through:

• Participating in research and information gathering, synthesis, and organization to assist in the formulation of assessments and decisions within the overall power system planning process. This includes interacting with other industry participants to obtain critical technical and economic information.
  • Maintain an electronic and paper information database and develop a highly advanced capability for retrieval and sharing of information to support the functional area in conducting analyses and reviewing scenarios.
  • Assist in performing complex analytical, technical and economic studies, utilizing commercial and in-house developed models as well as related technical and economic input information. Using the results from the analysis and/or simulation, propose an approach and course of action for the study to meet its goals and objectives.
  • Occasionally, conceive and lead analytical, technical, and economic assessments or work programs and identify/propose improvements to existing analytical approaches and business processes.
  • Participate in the preparation of technical, economic and policy based reports, presentations, memos and submissions related to planning for stakeholder reviews, Board of Directors’ information, regulatory proceedings, or other purposes.
• Participate in internal/external teams dealing in the department’s matters. Occasionally, participate in stakeholder sessions related to plan consultation, plan implementation or procurements.
• Maintain and develop knowledge of the market sector, relevant policies, and legislations.
  • Keep abreast of relevant external trends and practices, using various research services available to bring best practices on planning methods and tools, relevant developments, thinking, and experiences to the attention of the group.
  • Keep abreast of industry developments, government policy, regulatory changes, and market place developments. Recommend participation approach and propose strategies to address matters that are relevant to the functional area.
• Other duties or responsibilities as may be assigned.

In a typical day, you will support the Day Ahead Market and be one of the demand forecast expert’s within the team by providing analysis and insights in regard to electricity demand in the short term timeframe by reviewing model & forecast performance statistics and understanding demand drivers, such as weather conditions, time of year, and latest and recent trends in electricity consumption in Ontario.

• • As part of this support activity, the planning analyst may be assigned to perform demand forecast review & provide advice at early hours.  Certain days may require a start time as early as 6:30am. 
  • If assigned as a demand forecast support representative, the planning analyst may receive emergency calls to provide operational support during off hours to troubleshoot demand forecast related tools and functions.

The planning analyst will be applying data mining techniques, doing statistical analysis, and building high quality prediction systems integrated with the IESO’s existing data products and demand forecasting applications.

Role Requirements

 
Our team consists of experts from diverse backgrounds, each bringing their unique perspectives and skills. 
To succeed in this role, you’ll need: 

• A university degree in Engineering, Science, Mathematics, Economics, Planning, Data Science, or other relevant discipline is required.
• A curriculum or experience that includes exposure to power systems, electrical theory, power system analysis and equipment, energy systems and conversion, mathematics, statistics or economic analysis is preferred.
• Experience in the Ontario electricity sector is preferred.
• A strong understanding of foundational statistical methods, data as well as regression analysis techniques an asset.
• 4 – 6 years of experience in a planning, regulatory, research, or analytical environment is typically required to complete the responsibilities of the job.
• Strong knowledge of and experience programming in Python, VBA, R, Matlab, etc., including writing and testing code. Be able to write programming scripts to do analysis and/or modelling.

How We Support You

From a comprehensive total rewards program to dynamic learning and development opportunities—including job rotations to broaden your expertise—we empower you to define and shape your own success. When you join the IESO, here’s what you can expect:

• Best-in-class benefits and long-term support in the form of a defined benefit pension plan. 
• Work in a dynamic and evolving sector that offers exciting opportunities and the chance to explore new career paths.
• Leadership that values meaningful discussions, welcomes feedback, and prioritizes career development. 
• A strong, inclusive culture and a collaborative team environment with a shared passion for impactful work.
• Compensation packages that are regularly reviewed to remain competitive and to best accommodate the diverse needs of our employees. 

Deadline

December 17, 2025. For future reference, please save a copy of the job posting as it will no longer be available once the posting closes.

Thank you for your interest in a career at the IESO. Only candidates selected for an interview will be contacted. Please note that the successful candidate must be legally eligible to work in Canada and will be subject to applicable background checks. 

IESO will not conduct interviews or offer positions via online, text, chat or social media platforms. We will not gather personal information directly from candidates or potential candidates. Selected candidates will work with our Talent Acquisition team to ensure their application is processed.

The IESO will be transitioning to a 3-day in-office work week effective January 2026. Over the course of 2026, the IESO will advance plans to acquire additional office space to accommodate more in-office time. While the timeline for moving to a full 5-day in-office model has not yet been established, we are committed to keeping employees and candidates informed as plans progress and give them as much advance notice as possible to prepare for any changes.

We believe in opportunities for everyone. 

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’re proud to say we’ve been recognized as a supportive, inclusive employer. 

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