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 is a unionized position that falls within the Operations Models & Forecast team which is a part of the larger Power System Planning Division in the Demand & Conservation Planning group. 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.

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 developing integrated electricity system plans that ensure reliable, cost‑effective, and sustainable energy supply for Ontario. Activities could include:

- Identifying system needs and evaluating solutions: Analyze current and future electricity demand, supply, and system constraints; develop and assess options; and recommend preferred solutions with clear rationale.
- Conducting complex analyses and studies: Lead technical, economic, and risk assessments using advanced models and data to simulate power system performance and inform planning decisions.
- Developing tools, processes, and forecasts: Build and maintain analytical models, forecasting tools, and planning methodologies to support decision‑making.
- Researching trends and best practices: Monitor industry developments, technologies,



and standards to enhance planning approaches.
- Occasionally, provide mentoring, advice and guidance to more junior or less experienced staff.
- Provide quality control and review of work and products of junior staff.
- Develop and utilize programming scripts to do analysis and/or modelling.
- Engaging stakeholders: Work with internal teams, government, industry partners, and communities to align on needs, solutions, and implementation strategies.
- 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 experts within the team by providing analyses 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.

The responsibilities include

- Conduct forecast review activities starting in the mornings around 6:30 am to ensure forecast advice is provided to Day Ahead Market Operators in a timely manner.
- Participate in Morning Support calls with the Market Forecasts & Integration (MF&​I) and Control Room (CR) teams on weekdays, excluding holidays, to arrive at the day ahead demand forecast.
- Summarize demand observations, forecasts and deviations into daily reports.
- Review the 10‑day forecast for reasonableness and provide guidance to Markets & Forecast Integration and Control Room teams.
- Maintain and develop models to be utilized to inform 0‑10 day ahead demand forecasts.
- Support the integration of short‑term demand observations into the medium‑ and longer‑term demand forecasts.

The Planner 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. This is a promotion‑in‑place (PIP) affected role. Candidates with lesser qualifications will be considered for a Power System Planning Analyst role.

Role requirements

- A university degree in Engineering, Science, Mathematics, Economics, Planning, Data Science, or other relevant discipline is required.
- 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.
- A strong understanding of foundational statistical methods, data and regression analysis techniques.
- Experience programming and developing code in Python, VBA, Matlab, R, etc.



is preferred.
- 6‑8 years of experience in a power system planning or operation or analytical studies related to integrated planning is typically required.
- Experience in the Ontario electricity sector is preferred.

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 solid, 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

July 14, 2026. For future reference, please save a copy of the job posting as it will no longer be available once the posting closes.

Legal & application notes

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 currently has a 3‑day in‑office work week for applicable roles. 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.

Equity & inclusion

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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📌 Planner (Toronto)
🏢 Independent Electricity System Operator (IESO)
📍 Toronto