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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 3:00 a.m. EST
12,623 MW
Market Demand at 3:00 a.m. EST
15,836 MW
Hourly Output by Fuel Type at 3:00 a.m. EST
Nuclear
8,250 MW
Hydro
3,331 MW
Gas
233 MW
Wind
3,999 MW
Solar
0 MW
Biofuel
0 MW
Hourly Ontario Energy Price at 3:00 a.m. EST
$5.08 / MWh
Global Adjustment 1st Estimate (March)
$41.09/ 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.

The Market Day

HOEP ($/MWh)

Dispatch    Pre-Dispatch

HE
1 8.75
2 5.33
3 5.08
4 6.49
5 42.00
6 48.60
7 77.39
8 56.47
9 48.72
10 48.83
11 48.90
12 47.35
13 47.32
14 44.77
15 47.28
16 41.42
17 42.80
18 43.05
19 47.30
20 48.11
21 47.66
22 47.32
23 47.33
24 41.39

Ontario Demand (MW)

Actual    Projected

HE
1 12,846
2 12,673
3 12,623
4 12,889
5 13,958
6 15,240
7 15,941
8 16,256
9 16,187
10 16,119
11 16,024
12 16,019
13 16,036
14 16,070
15 16,199
16 16,545
17 16,912
18 17,064
19 17,274
20 17,376
21 16,882
22 16,073
23 15,275
24 14,716

Market Demand (MW)

Actual    Projected

HE
1 15,834
2 15,852
3 15,836
4 16,527
5 17,475
6 18,389
7 18,859
8 19,197
9 19,154
10 18,749
11 18,624
12 17,919
13 17,471
14 17,573
15 17,554
16 17,704
17 18,352
18 18,916
19 19,568
20 19,445
21 18,869
22 17,574
23 16,840
24 15,704
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
Mar 2025 41.09
Feb 2025 89.04 0.18 3.00
Jan 2025 83.92 45.78 41.09 68.28
Dec 2024 79.28 52.77 61.77 39.42
Nov 2024 76.80 89.48 89.04 30.33
Oct 2024 81.71 64.78 74.84 33.75
Sep 2024 67.50 86.69 79.28 31.72
Aug 2024 55.52 53.75 63.23 38.71
Jul 2024 45.88 64.55 63.71 37.79
Jun 2024 45.88 74.30 78.40 31.39
May 2024 45.88 79.76 77.63 28.36
Apr 2024 84.98 69.05 74.27 29.14
Date 1st 2nd Actual Rate Avg. HOEP
Mar 2025 4.11
Feb 2025 8.90 0.02 0.30
Jan 2025 8.39 4.58 4.11 6.83
Dec 2024 7.93 5.28 6.18 3.94
Nov 2024 7.68 8.95 8.90 3.03
Oct 2024 8.17 6.48 7.48 3.38
Sep 2024 6.75 8.67 7.93 3.17
Aug 2024 5.55 5.38 6.32 3.87
Jul 2024 4.59 6.46 6.37 3.78
Jun 2024 4.59 7.43 7.84 3.14
May 2024 4.59 7.98 7.76 2.84
Apr 2024 8.50 6.91 7.43 2.91
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 20 Mar 2025


Rank Date Hour Ending (EST) ICI Ontario Demand* (MW) Coincident Adjusted AQEW (MWh) Status* (Initial, Prelim, Final)
1 19 Jun 2024 17 23,852 23,074 Final
2 31 Jul 2024 17 23,356 22,469 Final
3 01 Aug 2024 17 23,179 22,392 Final
4 18 Jun 2024 16 23,097 22,407 Final
5 27 Aug 2024 17 22,750 21,880 Final
6 20 Jun 2024 16 22,486 21,681 Final
7 26 Aug 2024 17 22,466 21,787 Final
8 30 Jul 2024 19 22,371 21,555 Final
9 29 Jul 2024 17 22,245 21,440 Final
10 02 Aug 2024 18 22,103 21,508 Final

*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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