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Ontario’s 2020 Electricity Supply Mix

Electricity in Ontario is produced from a variety of sources. Each year the system-wide supply mix is published by the Ontario Energy Board. The current supply mix for 2020 has now been released and is included below.

For more information on this, and other industry/Burlington Hydro facts and figures of interest:


Electricity Source Percentage of Ontario's Electricity Mix*
Nuclear Energy 56.8 %
Water Power 24.4 %
Natural Gas* 6.3 %
Wind 8.7 %
Solar PV 2.4 %
Bioenergy** 0.5 %
Non-Contracted*** 0.9 %

 * Includes Lennox and dual fuel (natural gas/bioenergy) consistent with IESO.
** IESO’s embedded generation data set combines biomass and gas.
*** Non-Contracted represents a variety of fuel types that the IESO is unable to categorize due to a lack of information from Local Distribution Companies (LDCs).

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