Supply Mix Data

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

Electricity Retailing - Disclosure to Consumers, O. Reg. 416/99, requires retailers 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 for this disclosure. The Directive applies to all retailers, including distributors that provide standard supply service.

Under O. Reg 416/99 the Ministry of Energy is responsible for providing Ontario's electricity supply mix data for electricity suppliers. The following label discloses the system-wide electricity supply mix data for 2022. 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.

The system-wide supply mix is the combination of power sources used to generate the electricity used in Ontario. We are required to disclose this information to our customers on an annual basis. The chart shows the supply mix data for 2023, which was published by the Ontario Energy Board on March 31, 2024. This data should be considered current until further notice.​
 

¹ Hydro One does not generate electricity.
² Other represents a variety of non-contracted fuel types that the IESO is unable to categorize due to a lack of information from Local Distribution Companies (LDCs).
³ Includes Lennox and dual fuel (natural gas/bioenergy) and non-contracted emitting generation consistent with IESO.​​