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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 10:00 a.m. EST
13,974 MW
Market Demand at 10:00 a.m. EST
15,591 MW
Hourly Output by Fuel Type at 9:00 a.m. EST
Nuclear
5,295 MW
Hydro
5,418 MW
Gas
3,432 MW
Wind
921 MW
Solar
53 MW
Biofuel
0 MW
Hourly Ontario Energy Price at 10:00 a.m. EST
$26.39 / MWh
Global Adjustment 1st Estimate (May)
$45.88/ MWh
Ontario Demand
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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.

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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 14.34
2 14.36
3 14.33
4 14.92
5 21.09
6 18.45
7 16.72
8 21.36
9 25.71
10 28.54
11 30.30
12 28.45
13 29.90
14 29.88
15 26.15
16 26.15
17 26.15
18 28.13
19 30.74
20 29.87
21 26.15
22 24.88
23 20.98
24 21.46

Ontario Demand (MW)

Actual    Projected

HE
1 11,761
2 11,513
3 11,328
4 11,158
5 11,327
6 11,620
7 12,200
8 12,997
9 13,551
10 13,822
11 14,319
12 14,403
13 14,335
14 14,234
15 14,206
16 14,244
17 14,512
18 14,727
19 14,843
20 14,910
21 14,665
22 14,024
23 13,295
24 12,698

Market Demand (MW)

Actual    Projected

HE
1 13,889
2 13,801
3 13,353
4 13,246
5 13,381
6 13,572
7 13,877
8 14,621
9 15,240
10 15,907
11 16,078
12 16,327
13 16,549
14 16,489
15 16,500
16 16,312
17 16,499
18 16,760
19 16,857
20 16,831
21 16,496
22 15,356
23 14,371
24 13,220
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 2024 45.88
Apr 2024 84.98 69.05
Mar 2024 83.66 83.10 81.71 28.88
Feb 2024 84.98 68.68 66.32 28.36
Jan 2024 54.13 50.10 45.88 43.29
Dec 2023 83.40 67.59 66.22 30.94
Nov 2023 70.40 82.88 70.90 30.42
Oct 2023 73.32 84.33 84.98 31.38
Sep 2023 58.37 74.54 50.93 39.57
Aug 2023 53.77 51.54 76.06 31.36
Jul 2023 99.62 51.05 49.49 40.42
Jun 2023 98.53 89.72 82.93 30.33
Date 1st 2nd Actual Rate Avg. HOEP
May 2024 4.59
Apr 2024 8.50 6.91
Mar 2024 8.37 8.31 8.17 2.89
Feb 2024 8.50 6.87 6.63 2.84
Jan 2024 5.41 5.01 4.59 4.33
Dec 2023 8.34 6.76 6.62 3.09
Nov 2023 7.04 8.29 7.09 3.04
Oct 2023 7.33 8.43 8.50 3.14
Sep 2023 5.84 7.45 5.09 3.96
Aug 2023 5.38 5.15 7.61 3.14
Jul 2023 9.96 5.11 4.95 4.04
Jun 2023 9.85 8.97 8.29 3.03
ICI Ontario Demand Peak Tracker

Top 10 peak hours and ICI Ontario demand values with coincident adjusted AQEW values to date

Real-time snapshot of the top 10 peak hours and ICI Ontario demand values with coincident adjusted AQEW values for the current base period. This information can be used by ICI customers to track ICI Ontario demand peaks and estimate their GA allocation for the peak hour.

Peak Tracker

as of 5 May 2024


Rank Date Hour Ending (EST) ICI Ontario Demand* (MW) Coincident Adjusted AQEW (MWh) Status* (Initial, Prelim, Final)
1 03 May 2024 20 15,724
2 01 May 2024 20 15,680
3 02 May 2024 20 15,551
4 04 May 2024 18 14,721
5 05 May 2024 9 13,551

*ICI Ontario Demand Status: Initial peak values are published in orange approx. 1 hour following the end of the trade hour. Final peak values are published in black by the end of 3 business days following initial publication. *Coincident Adjusted AQEW Status: 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.

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