Skip Links
Lorem ipsum solor amet

Connecting Today.
Powering Tomorrow.

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.

Ontario's power system is operating reliably through the COVID-19 outbreak. Please check this site for updates.

Coronavirus (COVID-19) update

Ontario’s electricity system is reliable with adequate supply to meet our needs. The IESO has implemented controls to ensure the continued reliable operation of the grid and minimize risks to its employees and stakeholders. Currently, most non-essential IESO staff are working from home, and increased hygiene and physical distancing measures are in place to protect those employees working onsite. The IESO is not accepting visitors at our three facilities, and in-person engagement and meetings are no longer being scheduled. Where possible, meetings and events including engagement activities are being moved to conference calls or webinars. Registration information has been updated on the website to reflect this change.

Thank you for your patience and co-operation. Please contact if you have any questions.

Stay Connected


Save on Energy

Development of a transmission-distribution interoperability framework

Report explores T-D interoperability models

Development of a Transmission-Distribution Interoperability Framework explores several potential interoperability models along a continuum, looks at the pros and cons of each, and sets out next steps, including ongoing projects to test key aspects of operability.

Learn more.

Powering tomorrow podcast interview

Demand and Operations, Past and Future - A new Powering Tomorrow podcast episode

Throughout the history of Ontario’s electricity system, different events have impacted grid demand and operations such as SARS, the 2003 Blackout, and now the COVID-19 pandemic we are in today. In this episode, host Terry Young talks with current Chief Operating Officer and VP Planning, Acquisition and Operations, Leonard Kula and former COO Kim Warren, on lessons they’ve learned from past events, and how operations have evolved today.  

Listen to the podcast

Woman working from home on laptop

Stakeholder engagement meetings

The agenda for the October 26-28 stakeholder engagement meetings is now available, and registration is open.


Meeting materials and recorded presentations for the September 28-30 stakeholder engagement meetings are also posted.