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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. Non-essential IESO staff are working from home, and increased hygiene and physical distancing measures are in place to protect remaining on-site employees. The IESO is not accepting visitors at our three facilities, 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 have 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

A message from our CEO Peter Gregg

Stay informed

The IESO is continuously monitoring the changing situation to ensure the reliability of the Ontario power system. In addition to the conversations we are having with generators, transmitters and distributors, as well as our counterparts across North America, IESO President & CEO Peter Gregg is committed to keeping Ontarians informed about IESO’s operations and how it is adapting its plans as new information becomes available.

Read Peter Gregg's latest update.

Control Room

Changing demand conditions

The IESO continues to actively assess the impact of COVID-19 — closely monitoring demand, revising forecasts, and responding to changing system needs.

Read about the emerging trends we are seeing.

Stakeholder Meetings

Engaging with stakeholders

We value your input and perspectives, and have adapted our engagement activities to provide more flexibility for participants. Stakeholders are invited to attend meetings through webinars or conference calls. Deadlines for feedback has been extended to a minimum of three weeks. Recordings of engagement sessions will also be available online.

See active engagements for a list and status of engagement activities. See also events calendar for upcoming webinars.