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Power Data

This section provides easy access to market data, including real-time and historical reports.

Ontario Demand at 11:00 p.m. EST
17,216 MW
Market Demand at 11:00 p.m. EST
18,769 MW
Hourly Output by Fuel Type at 11:00 p.m. EST
Nuclear
11,035 MW
Hydro
2,782 MW
Gas
1,692 MW
Wind
1,252 MW
Solar
0 MW
Biofuel
197 MW
Hourly Ontario Energy Price at 11:00 p.m. EST
$21.64 / MWh
Global Adjustment 1st Estimate (August)
$72.11/ MWh
Ontario Demand
Market Demand
Compare With
Compare With
Compare With Ontario Demand
Compare With Market Demand

Download XML: Demand | Supply | Price

Data Directory

A collection of all reports provided on the IESO Public Reports site as well as access to historical data.

The IESO uses the "Hour Ending" naming convention for the hours in a day. For example, Hour 1 is from 12 am. to 1 am., Hour 2 is from 1 am. to 2 am. Hours 1-24 are the hours from midnight one day through midnight the next day. Eastern Standard Time is used year round.

Demand Icon

Demand Overview

Read more about Ontario’s electricity demand records, forecasts and related real-time reports.

Supply Icon

Supply Overview

Get current and historical data for Ontario's transmission and distribution level supply and yearly import/export data.

Price Icon

Price Overview

Learn about electricity price trends and gain access to historical monthly average prices, global adjustment rates and time-of-use.

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Conservation Overview

Learn about the progress made by Ontario's electricity conservation and demand response programs.

The Market Day

HOEP ($/MWh)

Dispatch    Pre-Dispatch

HE
1 10.22
2 5.93
3 6.02
4 2.59
5 24.24
6 21.60
7 21.26
8 24.36
9 25.44
10 30.69
11 36.00
12 36.05
13 42.44
14 35.92
15 55.33
16 69.43
17 36.88
18 27.57
19 26.29
20 35.29
21 33.33
22 23.71
23 21.64
24 21.65

Ontario Demand (MW)

Actual    Projected

HE
1 14,997
2 14,448
3 14,050
4 13,958
5 14,290
6 15,402
7 16,563
8 17,694
9 18,573
10 19,312
11 19,661
12 20,182
13 20,643
14 20,782
15 21,105
16 21,141
17 21,354
18 21,082
19 20,722
20 20,885
21 20,274
22 18,785
23 17,216
24 16,032

Market Demand (MW)

Actual    Projected

HE
1 16,936
2 16,464
3 16,084
4 16,010
5 16,436
6 17,598
7 18,565
8 19,663
9 20,544
10 21,245
11 21,492
12 21,755
13 22,179
14 21,955
15 22,581
16 22,793
17 23,188
18 22,593
19 22,046
20 22,346
21 21,972
22 20,589
23 18,769
24 18,132
Recent Summaries

Daily

Monthly

Global Adjustment Rates

Global Adjustment (GA) Rates and Average Hourly Ontario Energy Price

*Preliminary values for average HOEP will be available soon after month end, and can be confirmed in the Monthly Market Report. Global Adjustment values will be finalized 10 business days after month end.


Date 1st 2nd Actual Rate Avg. HOEP
Aug 2019 72.11
Jul 2019 135.27 88.54 96.45
Jun 2019 124.44 147.72 137.28 4.83
May 2019 128.60 130.49 126.04 7.58
Apr 2019 81.29 124.88 123.33 15.57
Mar 2019 81.05 75.75 80.41 27.34
Feb 2019 96.57 82.36 88.12 27.89
Jan 2019 67.41 83.06 80.92 27.82
Dec 2018 91.98 70.67 74.04 27.89
Nov 2018 122.35 105.40 98.55 25.14
Oct 2018 89.21 119.98 120.59 13.84
Sep 2018 84.24 86.60 85.84 29.94
Date 1st 2nd Actual Rate Avg. HOEP
Aug 2019 7.21
Jul 2019 13.53 8.85 9.65
Jun 2019 12.44 14.77 13.73 0.48
May 2019 12.86 13.05 12.60 0.76
Apr 2019 8.13 12.49 12.33 1.56
Mar 2019 8.11 7.58 8.04 2.73
Feb 2019 9.66 8.24 8.81 2.79
Jan 2019 6.74 8.31 8.09 2.78
Dec 2018 9.20 7.07 7.40 2.79
Nov 2018 12.24 10.54 9.86 2.51
Oct 2018 8.92 12.00 12.06 1.38
Sep 2018 8.42 8.66 8.58 2.99
Peak Tracker

Top 10 Ontario Demand Peaks from May 1, 2019 to April 30, 2020

New Ontario demand records are updated in real time. Verified Ontario demand values (AQEW) published 20 business days later.

as of 21 Aug 2019


Rank Date Hour Ending Ontario Demand (MW)* AQEW (MW)
1 29 Jul 2019 17 21,791
2 05 Jul 2019 17 21,716 21,275
3 20 Jul 2019 18 21,646 20,942
4 19 Jul 2019 12 21,545 21,006
5 04 Jul 2019 18 21,423 20,956
6 21 Aug 2019 17 21,354
7 30 Jul 2019 17 21,269
8 20 Aug 2019 17 21,145
9 10 Jul 2019 18 21,083 20,510
10 07 Aug 2019 18 21,033

* This column is reflected in the demand chart above