Date: July 23, 2026
Location: Mississauga, ON – Hybrid/On-site
Requisition ID: 21165
Status: Regular
Business Unit: Markets and Reliability
Grade/Band: Band 5A
Shift Work: No
Annual Pay Range: For standard 35-hour work week
$135,120 - $168,800
The successful placement within the range will depend on qualifications, relevant work experience, and other applicable considerations.
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 non-unionized position that falls within the System Integration Department with the Markets and Reliability Business Unit.
What makes this role exciting
The energy sector is rapidly evolving, offering exciting new opportunities for those who want to make a difference.
The successful candidate will exercise full supervisory responsibilities over staff and oversee the administration of processes and assigned work programs/projects related to power system modelling, to transmission and resource reliability assessments, and to the support of operation of the market and power system in Ontario. Provide coordination related to the above within the IESO and externally. Lead and/or collaborate to define, develop, modify or implement processes.
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:
Reporting to the Senior Manager, exercise control for assigned departmental accountabilities including full supervisory responsibilities over staff:
- Lead the Offline and Combined Modeling teams in the development, maintenance, governance, and continuous improvement of power system network and market models used to support operational planning, adequacy assessments, outage coordination, market applications, and real-time reliability analysis across the IESO-controlled grid.
- Provide strategic direction, technical oversight, and people leadership to modeling staff, ensuring the timely delivery of high-quality transmission, resource, and combined network models that meet operational, planning, regulatory, and stakeholder requirements while supporting evolving market and reliability needs.
- Champion innovation and continuous improvement within the Modeling organization by advancing automation, data governance, modeling processes, and analytical tools to enhance model quality, efficiency, scalability, and support for critical business decisions.
- Plan, organize, and assign work of staff to maintain control of quality and work performance. Ensure staff output effectively meets business needs and goals, ensuring quality, quantity, timeliness of work to achieve business objectives. Provide advice and guidance, including direction to staff on the more complex aspects of the work as required, develop work methods, processes and procedures to maintain efficient and effective work operations. Make effective recommendations on staff development, training, hiring, discharge, performance increases and performance management. Provide clear expectations, performance measures, meaningful feedback and corrective action as required.
- Ensure staff training on work methods and techniques including awareness of established and changing practices and procedures.
- Participate as a management resource to resolve labour relations matters such as job challenges, grievances and arbitration cases. May be called upon to act as a management representative on various committees, teams, etc.
- Exercise control, oversight and supervision of assigned work programs related to power system demand, supply resources, transmission infrastructure, and participation in markets and programs, including some or all of the following:
- Resource and transmission adequacy assessments, documenting the expected performance of the IESO-controlled grid.
- Coordination of assessment procedures and study results with NERC and NPCC as required.
- Internally and externally coordinated demand forecasts, capacity and energy adequacy forecasts and transmission adequacy forecasts.
- Integration of relevant transmission assessments with resource assessments.
- Assessments of proposed infrastructure changes, such as modifications, additions and retirements, on the IESO-controlled grid.
- Production of timely and accurate models for operational and planning purposes and the maintenance of data, tools and systems as applicable.
- Assess and mange compliance with relevant reliability standards, criteria, policies and market rules.
- Develop planning and operating criteria necessary to maintain the reliability of the Ontario power system.
- Manage reliability assessment of transmission and resource outages on the IESO-controlled-grid, including the development on outage specific limits and operating instructions to support real-time operations.
- Prepare instructions and guidelines for the operation of the IESO-controlled grid.
- Develop and support the Operations Engineer function including ensuring training and incident follow-up.
- Ensure the establishment and maintenance of documents, procedures, business controls and performance measures in support of department functions.
- Provide reliability organization support as required.
- Oversee Ontario power system operating security, including joint studies with interconnected system operators.
- Develop and maintain automated monitoring of the power system against operational instructions as required to operate the IESO-controlled grid and the IESO-administered market.
- Establish transmission capability and provide other technical support as required for the operation of the Transmission Rights market.
- Safeguard the confidentiality of electricity system information.
- Provide analysis and advice to the Ontario Government, the Ontario Energy Board and other sector agencies on matters related to operating and planning the Ontario power system.
- To act as a witness, and participate in regulatory hearings as required.
- Lead and manage projects and change management sponsored by the business unit.
- Prepare business plans, budgets and projections as required. Plan work programs and establish budget in order to achieve objectives. Analyze expenditures and performance achieved relative to budget and objectives.
- Provide a consultative service to other departments and/or business units on matters related to power system assessments. Coordinate and assist the efforts of other departments in accordance with IESO authorities and needs. Ensure compliance with established reliability standards, market rules, specifications, practices and procedures. Lead other departments and/or collaborate with other departments in adopting future methods and practices beneficial to the IESO and its stakeholders.
- Participate in internal and external committees and work groups on matters related to assessing of system reliability. Represent the company on these external groups. Advocate and advance IESO interests with responsible parties while coordinating IESO activities with their activities. Publish and present assessments and findings related to system reliability to external committees and stakeholders.
Discuss plans, assessments, and findings with personnel in other departments and business units, to allow them to fulfill their obligations and to coordinate in the best interest of the IESO.
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In a typical day, you will lead and support a team responsible for assessing and maintaining the reliability, adequacy, and security of Ontario’s power system. The manager plans and assigns work, coaches staff, oversees performance and training, and provides guidance on complex technical and operational issues while ensuring departmental goals and quality standards are achieved. They review demand, resource, and transmission assessments, oversee compliance with reliability standards and market rules, support outage and operational planning, and coordinate with internal departments, regulators, and external industry organizations. The role also includes managing projects, budgets, and business plans, providing expert advice to stakeholders, and representing the organization on committees, working groups, and regulatory matters. Throughout the day, they collaborate with colleagues and industry partners to develop solutions, share findings, and ensure the IESO-controlled grid operates safely, reliably, and efficiently.
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:
- Requires extensive exposure to the overall power system planning and operation through progressive training in this technical field. Requires specific experience as applicable to the particular specialty of the group. Experience will be related to the fields of power system planning, utilization of generation resources, secure operation of bulk electricity system, reliability assessments, power system models and assessment and monitoring tools. Background experiences 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, an understanding of control systems and control theory, familiarity with electric energy and transmission rights market operations, practices policies and market rules, an understanding of constrained economic dispatch, 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, leading project teams, providing technical advice, training junior staff, participation in business planning, budgets and projection activities and collaborating with other business units or external stakeholders to facilitate manage and implement strategic or critical initiatives.
- A period of over 10 years and up to and including 12 years is considered necessary to gain this experience.
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
August 6, 2026. 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 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.
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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