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The Independent Electricity System Operator (IESO) works at the heart of Ontario's power system. The IESO delivers key services across the electricity sector including: managing the power system in real-time, planning for the province's future energy needs, enabling conservation and designing a more efficient electricity marketplace to support ...
- Sector Participants
Investments in energy efficiency play a key role in the...
- Market Renewal
The Market Renewal Program (MRP) will make improvements to...
- Corporate IESO
In the IESO's Media Centre, reporters will find timely and...
- Document Library
Stakeholder Engagement Provide input and feedback on...
- IESO Public Reports
Parent Directory - Adequacy2/ 16-May-2024 00:20 - Adequacy...
- IESO News
Stakeholder Engagement Provide input and feedback on...
- Careers
Careers at IESO, Jobs at the IESO, IESO jobs, HR jobs, IT...
- Powering Tomorrow
The IESO’s 2024 Annual Planning Outlook identifies system...
- Peak Tracker
The coincident adjusted AQEW value is the metered...
- This Hour's Data
Generator Availability at Peak: Total amount of Ontario...
- Sector Participants
The Independent Electricity System Operator ( IESO) is the Crown corporation responsible for operating the electricity market and directing the operation of the bulk electrical system in the province of Ontario, Canada. It is one of seven independent system operators in North America . The IESO was established in April 1999 as the Independent ...
- 1998
- Toronto, Ontario, Canada
- Lesley Gallinger, CEO
- Electric power transmission
Managing the Power System. The IESO is the coordinator and integrator of Ontario’s electricity system. Our system operators monitor the energy needs of the province in real time – 24 hours a day, 7 days a week – balancing supply and demand and directing the flow of electricity across Ontario’s transmission lines.
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How is the IESO transforming Ontario's Power System?
How can IESO monitor Ontario's electricity demand?
What does the IESO do?
What happened to IESO & Ontario Power Authority?
By 2035, the system could be less reliant on the natural gas fleet, lowering emissions by 60 per cent below the IESO’s original forecasts. Attaining a decarbonized electricity sector by 2050, alongside aggressive electrification, would require a system more than double the size it is today at an estimated cost of around $400 billion.
The Independent Electricity System Operator (IESO) manages Ontario's power system, meeting Ontario's needs in real-time and by planning for the future. The IESO’s unique, challenging work environment attracts diverse, highly-educated professionals from engineering, business, finance, economics, information technology, law and social sciences.
Independent Electricity System Operator (IESO) Ministry Energy URL www.ieso.ca Address 1600-120 ADELAIDE STREET WEST TORONTO M5H1T1 Phone (905) 403-6900; 1(888)448-7777 Fax (905) 403-6921 Background Electricity Act, 1998, S.O. 1998, c. 15, Sched. A, Part II, ss. 4 (opens a new window) Function