Senior Transmission Planning Engineer

Date: August 6 2026

Location:Toronto ON Hybrid/On-site

Requisition ID: 21193

Status:Temporary

Business Unit:Power System Development

Grade/Band: MP5

Shift Work:

Annual Pay Range: For standard 35-hour work week

Step 1:$118456 to Step 10: $169208

The successful candidate will be placed at the appropriate step within the salary grade/band based on relevant years of experience and other applicable considerations.

Why join us

The IESO is committed to ensuring Ontarios electricity system meets the provinces 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 its not just what we doits who we are!

Who we are

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

This is a unionized position that falls within the Power System Development Business Unit.

What makes this role exciting

Transmission Planning is part of the Power System Planning Division and is responsible for initiating and supporting the implementation of transmission investments at the provincial regional and local level and of distribution connected non-wire alternatives that enhance system performance increase market efficiency and/or reduce cost for customers. Its power system plans form the basis for capital investment decisions regulatory approvals and the development of commercial agreements to provide new transmission facilities and supply resources.

They produce assessments as required by NPCC and NERC that demonstrate its power system plans meet reliability standards and they also provide transmission interface limits for resource adequacy assessments and to facilitate resource procurement activities.

They continually develop and evolve their planning processes to ensure that their processes continue to align with future procurement activities stakeholder expectations and other processes within the IESO.
The Senior Transmission Planning Engineer will carry out transmission planning activities as described in this document and will generally be working in one of the following types of activities:

1. Bulk transmission planning
2. Regional planning
3. Compliance assessments/reporting and standards development
4. Planning process development
5. Assessments to support resource procurement activities

What youll do

1. Lead and/or contribute to the development of plans and planning products related to the electricity transmission system. These plans and planning products include: bulk transmission plans regional plans (e.g. IRRPs) and/or special purpose plans related to ensuring reliable performance of the electricity transmission system.
2. Project manage the development of plans and planning products including: documenting plan objectives outcomes deliverables milestones and setting the schedule/time lines.
3. Maintain a familiarity with the tools and models commonly used to conduct transmission system assessments and analysis including load flow simulation tools economic evaluation tools risk evaluation tools electricity resource modeling tools etc. including a comprehensive understanding of the capabilities and limitations of these tools.
4. Participate in economic evaluation of different options for meeting reliability needs as a transmission planning subject matter expert.
5. Guide and/or contribute to the development and continuous improvement of planning processes procedures tools and assumptions including process documentation quality assurance and quality control.
6. Participate in stakeholder engagements community engagements and/or consultations on planning matters including occasionally acting as a subject matter expert on transmission planning matters and on specific plans and planning products.
7. Act as the subject matter expert for transmission planning matters in support of IESO activities including energy efficiency electricity markets resource development and sector innovation.
8. Develop and maintain key external relationships including with LDCs transmitters First Nations representatives government Ontario Energy Board staff and other sector agencies; act as a representative of Power System Planning.
9. Research and monitor development of municipal regional provincial and/or federal laws and policies including land use plans growth plans energy plans or targets or other related policies or plans that have potential to influence electricity transmission needs solutions or opportunities within the scope of transmission plans.
10. Lead the preparation of prepare and/or contribute to the preparation of reports briefs written submissions and/or information related to transmission plans and planning matters for IESO management and leadership regulatory processes stakeholder engagement and inquiries and other proceedings.
11. Frequently provide mentoring advice and guidance to more junior or less experienced staff and provide quality control and review of work and products; proactively play a lead strategic and operational role in the departments work and development of work plans.
12. Maintain up to date knowledge of the state-of-the-art on transmission technologies best-practices related to transmission planning and integrated resource planning and assist in bringing relevant external trends and practices to IESOs planning.
13. Participate in or lead the IESOs participation in external industry forums.
14. Perform NERC/NPCC/Market Rules compliance activities specifically:
Prepare and deliver evidence demonstrating compliance with NERC and NPCC requirements including internal control documentation work procedures reliability standard audit worksheets market manuals and training material.
Participate in reliability audits and presenting the evidence as required.
Act as a subject matter expert for the IESO to support Market Participant compliance such as: reviewing Market Rule exemption applications reviewing NERC/NPCC Compliance Plans and Mitigation Plans as necessary.
15. Act as a subject matter expert to other departments and/or business units on matters related to transmission planning.
16. Manage the work of external consultants acquired to support planning activities.
17. Perform other duties as required

Engineering duties include:
18. Complete the engineering studies required for bulk transmission plans regional plans NERC planning assessments NPCC Area Transmission Reviews planning and reliability outlooks and for Ad hoc requests. This includes steady-state and transient assessments of the power system.
19. Assess the load meeting capability of existing local networks in order to establish regional needs for Integrated Regional Resource Plans.
20. Assess the load meeting capability of system reinforcement options in order to establish their technical performance for Integrated Regional Resource Plans.
21. Assess transfer capability of the Ontario and Interconnected bulk system in the near-term and long-term planning horizons to ensure system adequacy and security and in support of resource acquisitions.
22. Assess the transfer capability of bulk system reinforcement options in order to establish their technical performance for bulk system plans.

23. Perform technical feasibility studies for proponents to assess the reliability impact of proposed power system facilities and connections to the IESO-controlled grid.
24. Perform assessments to determine the reliability of planned protection systems and programs including: Remedial Action Schemes the Under-Frequency Load Shedding Program and protective relaying during overload conditions or power swings.
25. Perform other specialized studies in the planning time horizon.
26. Participate in joint planning studies with our neighbours and in other inter-Area activities specifically:
Participate in appropriate NERC/NPCC committees task forces and working groups.
Conduct joint studies of the interconnected system to ensure adequacy and security of the ICG due to planned modifications to neighboring systems.
On occasion represent the IESO on interconnection committees and sub-committees as a technical subject matter expert.
27. Participate in the standards development process as a subject matter expert from the IESO specifically for the following activities:
Standard drafting activities pertaining to Planning Coordinator and Transmission Planner obligations.
Implementation of new standards pertaining to Planning Coordinator and Transmission Planner obligations by providing input to standard voting activities and developing an IESO position for standards.
Implementation of new standards by recommending new or modified business processes.
28. Prepare documentation and deliver presentations pertaining to engineering analysis.
29. Sign or sign and seal documents as a thus taking professional responsibility for ones own work.
30. On occasion sign or sign and seal documents as a for peer review or to assume professional engineering responsibility for engineering work performed by unlicensed staff.

Role Requirements

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

Education Details

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. Requires knowledge of how to deliver presentations on technical topics.

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 license to engage in the practice professional engineering in Ontario and be competent in the field of electrical engineering.

Experience Details

Requires experience in the power system planning or operation. More specifically the experience is related to the:

• Functions and characteristics of power system components
• Analytical studies and the application of computer techniques to solve power system problems
• Power system planning operation practices and policies
• Electric energy capacity ancillary service and transmission rights market operations practices policies
• Market Rules

A period of over 8 years and up to and including 10 years is considered necessary to gain this experience.

How We Support You

From a comprehensive total rewards program to dynamic learning and development opportunitiesincluding job rotations to broaden your expertisewe empower you to define and shape your own success. When you join the IESO heres 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 20 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 environmentone that values every team members 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. Were proud to say weve been recognized as a supportive inclusive employer.

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