Ontario’s System-Wide Electricity Supply Mix: 2023 Data

May 30, 2024

Electricity Retailing – Disclosure to Consumers, O. Reg. 416/99, requires to disclose to consumers the Ontario system-Wide Electricity Supply Mix in the manner established by the Ontario Energy Board.

The Board’s Directive for the Disclosure of information to consumers by Electricity Retailers under Ontario Regulation 416/99 prescribes the manner and timing requirements of this disclosure. The Directive applies to all retailers, including distributors that provide standard supply services.

Under O. Reg. 416/99 the Ministry of Energy is responsible for providing Ontario’s electricity supply mix data for electricity suppliers. The following table discloses the system-wide electricity supply mix data for 2023. This data must be used by electricity suppliers for the purposes of complying with the disclosure obligations of O. Reg. 416/99 and the Directive. This data should be considered current until further notice.

To fulfill the requirements of the Regulation, the OEB presents the information in percentages, To support the changes the IESO has made to the presentation of their distribution-connected data, the supply mix data in the table below is also presented in Terawatt-hours (TWh).


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