The Ontario Energy Report provides an up-to-date snapshot of Ontario’s energy sector.

Electricity Data
Third Quarter 2019

July – September 2019


Transmission Grid-connected Generation Output (Q3)
Nuclear 24.7 TWh 65.7%
Hydro 7.9 TWh 20.9%
Gas 3 TWh 7.9%
Wind 1.7 TWh 4.6%
Solar <1 TWh 0.7%
Biofuel <1 TWh 0.3%
Conservation Savings (Q3)
Net Peak Demand Savings 30 MW
Net Energy Savings 181 GWh


Ontario Grid-Connected Peak Demand (Q3)

21,791 MW

Set on July 29, 2019, 5:00 pm EST

Ontario Grid-Connected Peak Demand (for 2019)

21,791 MW

Set in Q3 – July 29, 2019, 5:00 pm EST

Commodity Cost

Commodity Cost (Q3) – Class A (¢/kWh)
  Q3 YTD
Hourly Ontario Energy Price
(Unweighted average)
1.63 1.71
Global Adjustment
(Average, Class A)1
6.14 5.99
Total 7.77 7.70
Commodity Cost (Q3) – Class B (¢/kWh)
  Q3 YTD
Hourly Ontario Energy Price
(Weighted Average)
1.77 1.87
Global Adjustment
(Average, Class B)1
11.39 10.73
Total 13.16 12.60

1 Class A customers are large electricity consumers that pay Global Adjustment based on their proportion of energy use during the five hours of the year with the highest demand. All other customers are Class B.

Ontario’s Transmission Grid

Ontario's Power Grid map, View Full Map PDF

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