Posting End Date: Education Level: 4-year University degree in Engineering, Science, Finance, Economics, Law or related field. 700 University Avenue, Toronto, Ontario M5G 1Z5 Shift: Travel Required: Electrify your career and help build a brighter tomorrow. Whether you work in the skilled trades or are a business professional, a career at OPG is an opportunity to electrify your life on -- and off -- the job.

Ontario Power

Generation (OPG) is looking for a dynamic, strategic and results‑driven professional to join our team in the role of Energy Market Affairs Supervisor.

Ontario Power

Generation (OPG) is looking for a energetic, strategic and results‑driven professional to join our team in the role of Energy Market Affairs Supervisor. Reporting to the Senior Manager, Market Affairs, this position is responsible for providing technical lead and guidance to a dynamic team that supports OPG’s relationship with the IESO, monitoring IESO market initiatives and design changes, providing expert advice in market rules review and interpretation and lead after‑the‑fact analysis. Responsible for hiring, onboarding, supervising, coaching, development planning and performance evaluation of the team.

Perform after‑the‑fact analysis of Ontario market events and work in conjunction with various experts in Energy Markets, Commercial Markets, Finance and Regulatory Affairs to deliver strategies and recommendations relating to operation of OPG’s generation assets. Monitor, evaluate and provide public feedback to IESO’s market initiatives or design changes that could impact generation operations and make recommendations to advocate for OPG's position and advance OPG’s strategic goals. Knowledge of the IESO’s Market Power Mitigation framework in order to negotiate with the IESO for representative reference levels and quantities for OPG’s generation assets.

Act as the subject matter expert to provide guidance, training, interpretation, identification and problem resolution for new market developments and for market rules and market manuals amendments. Apply knowledge of the Ontario electricity market,



electricity revenue streams and hydroelectric and thermal operations to develop strategies and recommendations to optimize the operation of OPG’s generation assets. Lead and participate in initiatives that drive commercial value and operational excellence across OPG’s generating fleet.

Mimium 4 year University degree in Engineering, Science, Finance, Economics, Law or related fields. Must have 8 or more years of relevant work experience in the energy industry; Direct experience working in the Ontario electricity system and energy markets; hands‑on involvement with market operations, market settlements, or market rules interpretation are considered assets.

Experience in the interpretation and application of IESO’s Market Rules and Market Manuals for asset operation in Ontario’s electricity market.

Experience with hydro operations and/or development and execution of market offer strategy in the Ontario electricity market, including familiarity with operational practices and policies, water management protocols and coordination with the IESO. Advanced analytical skills with demonstrated ability to work with and manipulate large data sets, develop robust analytical models, and perform complex numerical analysis using tools (e.g. Excel, PowerBI, MATLAB); proven capability to translate complex quantitative data into clear, actionable insights. demonstrated experience engaging both internal groups and external audiences—including stakeholders, public agencies, government entities, and the general public; The successful candidate will exhibit uncompromising integrity and commitment to upholding corporate values, and the OPG Code of Business Conduct.

As the largest generator in Ontario,



we meet approximately 50% of the province’s electricity needs, largely from low‑carbon sources like nuclear and hydro. As we work to achieve our vision of Electrifying life in one generation, OPG and our family of companies are also helping advance the development of new low‑carbon technologies such as Small Modular Reactors (SMRs), refurbishment projects, and electrification initiatives to help power the growing demands of a growing economy.

The Darlington New Nuclear

Project is leading the way in the advancement of Small Modular Reactor (SMR) technology in Canada – the future of nuclear power generation! Using new and innovative technologies such as small modular reactors, hydrogen and battery storage, while expanding our hydroelectric and nuclear portfolios, we are changing the electricity landscape in Ontario. The base salary range considers many factors including, but not limited to experience, education, and training, including any collective agreement requirements for union represented positions.

The total compensation package for regular full‑time management roles includes pay-for-performance programs for annual and medium time periods. Maintaining a high-performance culture and excellence is a core expectation of every member of our leadership team and is rewarded through the established compensation framework. OPG is committed to employment equity.

As such, we encourage applicants from equity‑seeking communities (Indigenous Peoples, racialized persons, persons with disabilities, and women). We strongly believe that alleviating the under‑representation of equity‑seeking individuals will create a stronger OPG team and allow us to better serve the needs of our diverse communities. In order to fulfill the above‑mentioned purpose, priority in hiring may be given to qualified persons who self‑identify as a member of equity‑seeking groups as identified in the application process.

OPG may use artificial intelligence (AI) tools as part of the applicant screening process.

📌 Energy Market Affairs Supervisor (Toronto)
🏢 Ontario Power Generation
📍 Toronto