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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 3:00 p.m. EST
17,397 MW
Market Demand at 3:00 p.m. EST
19,782 MW
Hourly Output by Fuel Type at 3:00 p.m. EST
Nuclear
10,571 MW
Hydro
3,628 MW
Gas
1,008 MW
Wind
3,597 MW
Solar
298 MW
Biofuel
1 MW
Hourly Ontario Energy Price at 3:00 p.m. EST
$15.21 / 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 0.00
3 0.00
4 0.00
5 0.00
6 0.00
7 0.00
8 5.35
9 2.83
10 6.76
11 9.15
12 13.36
13 5.82
14 8.67
15 15.21
16 23.44
17 23.44
18 21.37
19 21.06
20 22.06
21 21.90
22 13.39
23 5.70
24 0.00

Price Today

Ontario Demand (MW)

Actual    Projected

HE
1 12,545
2 12,104
3 11,931
4 11,804
5 11,902
6 12,158
7 12,640
8 13,514
9 14,359
10 15,156
11 15,980
12 16,497
13 16,759
14 17,067
15 17,397
16 17,966
17 18,143
18 18,234
19 18,218
20 17,843
21 16,948
22 15,869
23 14,804
24 13,900

Ontario Demand Today

Market Demand (MW)

Actual    Projected

HE
1 15,046
2 14,934
3 14,689
4 14,620
5 14,699
6 15,113
7 14,659
8 15,993
9 16,600
10 17,148
11 18,119
12 18,793
13 19,059
14 19,337
15 19,782
16 20,421
17 20,572
18 20,564
19 20,511
20 20,101
21 19,178
22 18,185
23 17,236
24 15,730

Ontario Market Today

Recent Summaries

Daily

21 Sep 2019

Monthly

Jul 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
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

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 22 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

Peak Tracker for Global Adjustment Class A

XML