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Power Data

Power Data

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

Ontario Demand at 3:00 a.m. EST
11,374 MW
Market Demand at 3:00 a.m. EST
14,004 MW
Hourly Output by Fuel Type at 3:00 a.m. EST
Nuclear
10,408 MW
Hydro
2,725 MW
Gas
192 MW
Wind
683 MW
Solar
0 MW
Biofuel
54 MW
Hourly Ontario Energy Price at 3:00 a.m. EST
($0.12) / MWh
Global Adjustment 1st Estimate (September)
$129.34/ 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.

Conservation Icon

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 0.00
2 -0.29
3 -0.12
4 -0.10
5 0.00
6 14.30
7 19.36
8 14.35
9 25.55
10 25.56
11 25.61
12 26.61
13 27.86
14 27.87
15 27.87
16 28.38
17 32.00
18 31.79
19 30.61
20 29.14
21 28.37
22 27.36
23 25.56
24 3.00

Ontario Demand (MW)

Actual    Projected

HE
1 11,957
2 11,521
3 11,374
4 11,671
5 12,875
6 14,111
7 14,672
8 14,905
9 14,907
10 14,961
11 15,044
12 15,162
13 15,400
14 15,601
15 15,710
16 16,124
17 16,628
18 16,979
19 17,308
20 17,156
21 16,298
22 15,105
23 14,018
24 13,151

Market Demand (MW)

Actual    Projected

HE
1 14,471
2 14,051
3 14,004
4 14,424
5 15,309
6 16,071
7 16,729
8 17,032
9 17,040
10 17,035
11 17,144
12 17,268
13 17,977
14 18,201
15 18,203
16 18,581
17 19,110
18 19,480
19 19,696
20 19,761
21 18,910
22 17,230
23 16,157
24 14,992
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
Sep 2019 129.34
Aug 2019 72.11 109.74 126.07 16.13
Jul 2019 135.27 88.54 96.45 21.91
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
Date 1st 2nd Actual Rate Avg. HOEP
Sep 2019 12.93
Aug 2019 7.21 10.97 12.61 1.61
Jul 2019 13.53 8.85 9.65 2.19
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
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 19 Sep 2019


Rank Date Hour Ending Ontario Demand (MW)* AQEW (MW)
1 29 Jul 2019 17 21,791 21,068
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 20,848
7 30 Jul 2019 17 21,269 20,509
8 20 Aug 2019 17 21,145 20,533
9 10 Jul 2019 18 21,083 20,510
10 07 Aug 2019 18 21,033 20,428

* This column is reflected in the demand chart above