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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 4:00 a.m. EST
10,821 MW
Market Demand at 4:00 a.m. EST
12,664 MW
Hourly Output by Fuel Type at 4:00 a.m. EST
Nuclear
8,298 MW
Hydro
3,416 MW
Gas
120 MW
Wind
451 MW
Solar
0 MW
Biofuel
0 MW
Hourly Ontario Energy Price at 4:00 a.m. EST
$13.22 / MWh
Global Adjustment 1st Estimate (May)
$98.51/ MWh
Ontario Demand
Market Demand
Compare With
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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.

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Price Overview

Learn about electricity price trends and gain access to historical monthly average prices, global adjustment rates and time-of-use.

The Market Day

HOEP ($/MWh)

Dispatch    Pre-Dispatch

HE
1 17.01
2 13.24
3 11.72
4 7.20
5 7.20
6 13.23
7 7.20
8 13.25
9 13.25
10 13.25
11 13.26
12 13.26
13 13.23
14 13.25
15 13.25
16 21.81
17 24.54
18 24.64
19 24.58
20 24.58
21 24.60
22 24.60
23 23.98
24 13.25

Ontario Demand (MW)

Actual    Projected

HE
1 11,215
2 10,949
3 10,782
4 10,821
5 10,875
6 10,979
7 11,111
8 11,390
9 11,578
10 11,698
11 11,774
12 11,826
13 11,776
14 11,724
15 11,688
16 12,374
17 12,777
18 13,331
19 13,642
20 13,724
21 13,629
22 13,083
23 12,365
24 11,711

Market Demand (MW)

Actual    Projected

HE
1 13,085
2 12,871
3 12,624
4 12,664
5 12,838
6 12,905
7 12,931
8 13,374
9 13,438
10 13,761
11 13,764
12 13,761
13 13,834
14 13,716
15 13,694
16 14,522
17 14,830
18 15,392
19 15,446
20 15,516
21 15,492
22 15,163
23 14,522
24 13,020
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.

This table does not include the GA deferral recovery amounts for 2021. More information on the 2021 GA estimates and actual recovery rates are on the Class B GA and GA components and costs web pages.


Date 1st 2nd Actual Rate Avg. HOEP
May 2021 98.51
Apr 2021 61.39 118.88 109.34
Mar 2021 79.39 91.80 90.80 17.62
Feb 2021 98.51 37.12 50.42 33.77
Jan 2021 86.21 86.73 82.97 17.42
Dec 2020 107.04 100.31 105.58 15.98
Nov 2020 116.70 114.20 117.05 10.48
Oct 2020 149.54 132.66 128.06 11.32
Sep 2020 115.73 127.92 121.76 14.38
Aug 2020 102.32 106.22 103.48 19.42
Jul 2020 103.05 94.93 99.02 20.5
Jun 2020 115.00 115.00 115.00 12.49
Date 1st 2nd Actual Rate Avg. HOEP
May 2021 9.85
Apr 2021 6.14 11.89 10.93
Mar 2021 7.94 9.18 9.08 1.76
Feb 2021 9.85 3.71 5.04 3.38
Jan 2021 8.62 8.67 8.30 1.74
Dec 2020 10.70 10.03 10.56 1.60
Nov 2020 11.67 11.42 11.71 1.05
Oct 2020 14.95 13.27 12.81 1.13
Sep 2020 11.57 12.79 12.18 1.44
Aug 2020 10.23 10.62 10.35 1.94
Jul 2020 10.31 9.49 9.90 2.05
Jun 2020 11.50 11.50 11.50 1.25
Peak Tracker

Top 10 Ontario demand peaks with coincident adjusted AQEW values to date

Real-time snapshot of the highest Ontario demand values with coincident adjusted AQEW values for the current base period that can be used to track potential ICI peak hours. The status column indicates whether the coincident adjusted AQEW value is Initial, Preliminary or Final.

as of 16 May 2021


Rank Date Hour Ending (EST) Ontario Demand (MW) Coincident Adjusted AQEW (MWh) *Status (Initial, Prelim, Final)
1 03 May 2021 17 15,882 15,462 Initial
2 11 May 2021 20 15,567
3 04 May 2021 17 15,544 15,291 Initial
4 05 May 2021 20 15,450 14,940 Initial
5 06 May 2021 20 15,136 14,863 Initial
6 10 May 2021 20 14,962
7 07 May 2021 20 14,776 14,576 Initial
8 13 May 2021 21 14,546
9 12 May 2021 20 14,522
10 14 May 2021 20 14,290

*Initial data is published 7 calendar days after the trade date. Preliminary data is published 10 business days after the trade date. Final data is published 20 business days after the trade date. A blank column indicates adjusted AQEW values are not yet available.