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 evolution.
2016 Annual Report now available
The IESO’s 2016 Annual Report, Reliability in a Changing Sector, takes a look back at core initiatives in 2016, as well as to the year ahead and beyond.
It describes how the IESO will continue to provide superior reliability in a changing environment, create a culture of conservation in Ontario and renew its electricity markets, all while working with stakeholders and communities.
Read the 2016 Annual Report.
Evolving Ontario's Electricity Market
To prepare for the electricity sector of tomorrow, the IESO is working with stakeholders to pursue changes to Ontario’s electricity market through the Market Renewal project. This project will modernize the Ontario electricity market to improve market efficiency and unlock future opportunities for all participants.
Read more about Market Renewal.
Regional Electricity Planning in Ontario
Electricity planning looks at the unique needs of Ontario’s many diverse regions, and includes a strong commitment to public participation and community engagement.
Get involved in Regional Planning and Community Engagement.