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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 5:00 a.m. EST
12,271 MW
Market Demand at 5:00 a.m. EST
14,225 MW
Hourly Output by Fuel Type at 5:00 a.m. EST
Nuclear
10,375 MW
Hydro
2,954 MW
Gas
185 MW
Wind
543 MW
Solar
0 MW
Biofuel
14 MW
Hourly Ontario Energy Price at 5:00 a.m. EST
($0.03) / MWh
Global Adjustment 1st Estimate (October)
$178.78/ 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 -0.07
2 -0.78
3 -2.55
4 -3.46
5 -0.03
6 12.10
7 6.66
8 14.34
9 5.70
10 0.00
11 0.00
12 0.00
13 0.00
14 0.00
15 0.00
16 4.83
17 0.00
18 1.00
19 5.82
20 5.70
21 0.00
22 0.00
23 0.00
24 -3.00

Price Today

Ontario Demand (MW)

Actual    Projected

HE
1 11,734
2 11,577
3 11,530
4 11,688
5 12,271
6 14,506
7 15,313
8 15,395
9 15,093
10 14,889
11 14,684
12 14,629
13 14,629
14 14,680
15 14,854
16 15,733
17 16,040
18 16,529
19 16,677
20 16,283
21 15,474
22 14,450
23 13,428
24 12,661

Ontario Demand Today

Market Demand (MW)

Actual    Projected

HE
1 14,382
2 14,361
3 14,284
4 14,180
5 14,225
6 16,679
7 17,514
8 17,289
9 17,054
10 16,676
11 16,475
12 16,407
13 16,414
14 16,420
15 16,611
16 17,595
17 17,949
18 18,483
19 18,818
20 18,252
21 17,534
22 16,321
23 15,765
24 13,839

Ontario Market Today

Recent Summaries

Daily

15 Oct 2019

Monthly

Aug 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
Oct 2019 178.78
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
Dec 2018 91.98 70.67 74.04 27.89
Nov 2018 122.35 105.40 98.55 25.14
Date 1st 2nd Actual Rate Avg. HOEP
Oct 2019 17.88
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
Dec 2018 9.20 7.07 7.40 2.79
Nov 2018 12.24 10.54 9.86 2.51

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 21 Oct 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