Mailing Address
Independent Electricity System Operator
1600-120 Adelaide Street West
Toronto, ON M5H 1T1
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About Ontario's electricity sector
Email:
customer.relations@ieso.ca
Visit:
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Registered Participants with the IESO
Telephone:
905.403.6900
Toll-free:
1.888.448.7777
Email:
customer.relations@ieso.ca
Energy Efficiency Programs
Toll-free:
1.877.797.9473
Save on Energy Programs:
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for business and industry>
Provide goods and services to the IESO
Telephone:
905.855.6401
Email:
rfp.info@ieso.ca
Visit:
Corporate Procurement>
FIT/microFIT
Toll-free:
1.877.797.9473
Email:
FIT.Contract@ieso.ca
microFIT.Contract@ieso.ca
Please note that on April 5, 2016 the Minister of Energy issued a direction to the IESO to cease accepting applications under the FIT program. The final FIT Application Period concluded on November 25, 2016.
If your question is regarding an existing FIT Contract, please ensure that your inquiry is directed to FIT.Contract@ieso.ca. Please include your Contract ID.
The microFIT Program is no longer accepting new applications, please see the notice posted December 1, 2017.
Accessibility for Ontarians with Disabilities
As part of the IESO's efforts to meet the needs of people with disabilities, documents posted to this website will be made available in additional formats upon request to customer.relations@ieso.ca.
The IESO also welcomes feedback regarding the methods it uses to provide services to persons with disabilities. Feedback can be directed as follows:
- by telephone - 905.403.6900, toll-free: 1.888.448.7777
- in writing - IESO, Station A, Box 4474, Toronto, ON M5W 4E5, Attention: Customer Relations
- by email - customer.relations@ieso.ca
Any concerns not being adequately dealt with by the IESO can be raised with the IESO's General Counsel:
1600-120 Adelaide Street West
Toronto, ON M5H 1T1
Fax: 416.506.2843
Email: IESO-LegalServices@ieso.ca