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Power Data

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

This Hour's Data
Ontario Demand at 4:00 a.m. EST
12,731 MW
Market Demand at 4:00 a.m. EST
15,568 MW
Hourly Output by Fuel Type at 4:00 a.m. EST
Nuclear
10,866 MW
Hydro
3,113 MW
Gas
261 MW
Wind
1,104 MW
Solar
0 MW
Biofuel
11 MW
Hourly Ontario Energy Price at 4:00 a.m. EST
($0.10) / MWh
Global Adjustment 1st Estimate (December)
$85.69/ 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 0.00
3 0.00
4 -0.10
5 0.00
6 5.98
7 16.00
8 14.39
9 16.01
10 18.00
11 13.38
12 18.00
13 18.00
14 18.00
15 18.00
16 18.01
17 18.08
18 18.02
19 18.01
20 18.01
21 18.01
22 18.00
23 5.57
24 0.00

Price Today

Ontario Demand (MW)

Actual    Projected

HE
1 13,292
2 12,928
3 12,823
4 12,731
5 13,270
6 14,316
7 15,785
8 16,558
9 17,066
10 17,298
11 17,351
12 17,353
13 17,340
14 17,346
15 17,347
16 17,740
17 18,061
18 18,657
19 18,418
20 18,096
21 17,703
22 17,038
23 15,877
24 14,783

Ontario Demand Today

Market Demand (MW)

Actual    Projected

HE
1 16,103
2 15,956
3 15,857
4 15,568
5 16,393
6 17,523
7 18,434
8 19,047
9 19,445
10 19,649
11 19,844
12 19,670
13 19,691
14 19,521
15 19,713
16 20,015
17 20,456
18 20,917
19 20,750
20 20,422
21 20,132
22 19,567
23 18,686
24 17,704

Ontario Market Today

Recent Summaries

Daily

07 Dec 2019

Monthly

Oct 2019

Market Summaries Archive

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
Dec 2019 85.69
Nov 2019 107.27 101.09
Oct 2019 178.78 118.86 136.80 7.25
Sep 2019 129.34 163.92 122.63 14.34
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
Date 1st 2nd Actual Rate Avg. HOEP
Dec 2019 8.57
Nov 2019 10.73 10.11
Oct 2019 17.88 11.89 13.68 0.73
Sep 2019 12.93 16.39 12.26 1.43
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

Price Overview

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 9 Dec 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

Peak Tracker for Global Adjustment Class A

XML