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Ontario's System-Wide Electricity Supply Mix: 2015 Data

Posted On: Tuesday, August 23, 2016

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 2015. 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.

Electricity Facts
Electricity Sources Ontario's Electricity Mix*
Water power 23.2%
Alternative power source 8.7%
  • Solar
  • Wind
  • Biomass


  • Waste
Nuclear Energy 57.8%
Natural Gas** 9.7%
Other 0.5%

*Includes both Tx (direct) and Dx (embedded) connected generation (Ontario Ministry of Energy)

**Includes generation from facilities that are predonminantly natural gas (e.g., Lennox Generating Station)

Note: Figures may not add to 100% due to rounding.

July 21, 2016

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