Accessibility Standard for Customer Service

On January 1, 2015, the Ontario Power Authority (OPA) merged with the Independent Electricity System Operator (IESO) to create a new organization that will combine the OPA and IESO mandates.

The policies and plans on this page refer to the former OPA's compliance with Ontario's accessibility Standards. See the accessibility standards established by the IESO.

As part of our efforts to meet the needs of people with disabilities, these and other publicly available documents will be made available in additional formats as needed.

Feedback, questions, or complaints about the information on this page
The IESO welcomes any feedback regarding the methods it uses to provide services to persons with disabilities. You can provide feedback in person, by telephone, in writing, or in electronic format.  

Feedback should be directed to:

General Counsel
120 Adelaide Street West, Suite 1600
Toronto, ON M5H 1T1  
Phone: 416-969-6027

Complaints must be made in writing as noted above.

A representative of the IESO will acknowledge receipt of feedback and complaints within three (3) business days of receipt. A response will be provided within ten (10) business days of receipt. Replies will be provided in the format requested by the client.

eSSENTIAL Accessibility™ Web Browser
Our commitment to an accessible environment is reflected in our partnership with eSSENTIAL Accessibility™, a global initiative that is helping to make the Web fully accessible for people with physical disabilities.

This Web Accessibility icon serves as a link to download eSSENTIAL Accessibility assistive technology software for individuals with physical disabilities

eSSENTIAL Accessibility™ provides a free stand alone web browser that features keyboard and mouse replacement tools useful to anyone who has difficulty typing, moving a mouse or reading a web page, including:

  • onscreen keyboard with word prediction and layout designer
  • mouse auto click
  • page reader
  • XY mouse
  • direction mouse
  • radar mouse
  • web cam based hands-free movement tracking
  • fully customizable toolbar

The browser needs no maintenance or system integration, and can be downloaded and installed quickly on PC computers with MS Windows® XP Pro, Microsoft Media Center 2005, Vista or Windows 7.  

See more system requirements for PC »

Using the browser on a MAC »

eSSENTIAL Accessibility™ was launched in association with leading advocacy groups for the disabled, in recognition of the importance of providing assistive technology free of charge. This partnership reflects the OPA’s commitment to inclusion, and helps us meet customer service, employment, and information standards mandated by the Accessibility for Ontarians with Disabilities act (AODA).

For more information visit or contact

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