Independent Electricity System Operator (IESO)

Energy Generation & Transmission

About Independent Electricity System Operator (IESO)

The IESO reliably operates the system in real time, while ensuring it’s extensive planning, conservation, market and procurement capabilities serve the province’s long term needs.

*Through amendments to the Electricity Act, the IESO and the OPA were merged on January 1st, 2015.


Contact Name: Tabatha Bull
Job Title: Manager, First Nations & Metis Relations
Email Address:
Phone Number: (416) 969-6078


Billing Address
120 Adelaide St. West
Toronto, ON
M5H 1T1, Canada