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

Ontario Demand at 10:00 p.m. EST
18,367 MW
Market Demand at 10:00 p.m. EST
20,715 MW
Hourly Output by Fuel Type at 9:00 p.m. EST
Nuclear
10,371 MW
Hydro
4,935 MW
Gas
1,350 MW
Wind
3,525 MW
Solar
0 MW
Biofuel
191 MW
Hourly Ontario Energy Price at 10:00 p.m. EST
$21.98 / MWh
Global Adjustment 1st Estimate (December)
$83.91/ 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.

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Supply Icon

Supply Overview

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

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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 Icon

Conservation Overview

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

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The Market Day

HOEP ($/MWh)

Dispatch    Pre-Dispatch

HE
1 13.33
2 13.32
3 12.08
4 13.31
5 7.24
6 9.65
7 33.53
8 59.40
9 40.04
10 37.11
11 32.41
12 31.85
13 13.37
14 32.35
15 36.10
16 20.04
17 58.80
18 135.23
19 46.84
20 13.35
21 12.72
22 30.73
23 13.00
24 6.04

Ontario Demand (MW)

Actual    Projected

HE
1 16,117
2 15,656
3 15,518
4 15,328
5 15,493
6 16,019
7 17,479
8 18,869
9 18,968
10 19,067
11 19,002
12 18,870
13 18,582
14 18,731
15 18,573
16 18,626
17 19,318
18 19,926
19 19,625
20 19,192
21 18,884
22 18,551
23 17,379
24 16,196

Market Demand (MW)

Actual    Projected

HE
1 18,210
2 17,834
3 17,692
4 17,718
5 17,911
6 18,436
7 19,541
8 20,305
9 20,322
10 21,075
11 20,983
12 21,475
13 21,081
14 20,751
15 20,739
16 20,535
17 21,403
18 22,037
19 21,223
20 20,801
21 20,692
22 20,961
23 19,891
24 18,979
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
Jan 2017 66.87 86.77 82.27 21.56
Feb 2017 105.59 84.30 86.39 21.11
Mar 2017 84.09 68.86 71.35 26.03
Apr 2017 68.74 102.18 107.78 11.14
May 2017 106.23 127.76 123.07 3.17
Jun 2017 119.54 125.63 118.48 5.89
Jul 2017 106.52 101.97 112.80 13.61
Aug 2017 115.00 104.76 101.09 17.28
Sep 2017 127.39 98.95 88.64 23.13
Oct 2017 102.12 119.73 125.63 8.75
Nov 2017 111.64 96.69 97.04 14.01
Dec 2017 83.91
Date 1st 2nd Actual Rate Avg. HOEP
Jan 2017 6.69 8.68 8.23 2.16
Feb 2017 10.56 8.43 8.64 2.11
Mar 2017 8.41 6.89 7.14 2.60
Apr 2017 6.87 10.22 10.78 1.11
May 2017 10.62 12.78 12.31 0.32
Jun 2017 11.95 12.56 11.85 0.59
Jul 2017 10.65 10.20 11.28 1.36
Aug 2017 11.50 10.48 10.11 1.73
Sep 2017 12.74 9.90 8.86 2.31
Oct 2017 10.21 11.97 12.56 0.88
Nov 2017 11.16 9.67 9.70 1.40
Dec 2017 8.39
Peak Tracker

Top 10 Ontario Demand Peaks from May 1, 2017 to April 30, 2018

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

as of 15 Dec 2017


Rank Date Hour Ending Ontario Demand (MW)* AQEW (MW)
1 25 Sep 2017 17 21,786 21,171
2 26 Sep 2017 17 21,542 21,039
3 12 Jun 2017 17 21,168 20,702
4 19 Jul 2017 19 20,627 20,024
5 24 Sep 2017 18 20,457 19,854
6 06 Jul 2017 18 20,366 19,869
7 11 Dec 2017 18 20,306
8 11 Jul 2017 18 20,302 19,691
9 13 Dec 2017 18 20,252
10 21 Jul 2017 17 20,192 19,730

* This column is reflected in the demand chart above