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

Electricity Data
Second Quarter 2019

April – June 2019


Transmission Grid-connected Generation Output (Q2)
Nuclear 21.7 TWh 61.7%
Hydro 10.0 TWh 28.5%
Wind 2.1 TWh 5.9%
Gas 1.1 TWh 3.1%
Solar <1 TWh 0.6%
Biofuel <1 TWh 0.2%
Conservation Savings (Q2)
Net Peak Demand Savings 7 MW
Net Energy Savings 30 GWh


Ontario Grid-Connected Peak Demand (Q2)

20,248 MW

Set on June 27, 2019, 7:00 pm EST

Ontario Grid-Connected Peak Demand (for 2019)

21,525 MW

Set in Q1 – January 21, 2019, 6:00 pm EST

Commodity Cost

Commodity Cost (Q2) – Class A (¢/kWh)
  Q2 YTD
Hourly Ontario Energy Price
(Unweighted average)
0.85 1.75
Global Adjustment
(Average, Class A)1
6.66 5.92
Total 7.51 7.67
Commodity Cost (Q2) – Class B (¢/kWh)
  Q2 YTD
Hourly Ontario Energy Price
(Weighted Average)
0.93 1.92
Global Adjustment
(Average, Class B)1
12.88 10.38
Total 13.81 12.30

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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