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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
13,979 MW
Market Demand at 10:00 a.m. EST
15,538 MW
Hourly Output by Fuel Type at 10:00 a.m. EST
Nuclear
9,953 MW
Hydro
3,306 MW
Gas
654 MW
Wind
493 MW
Solar
365 MW
Biofuel
8 MW
Hourly Ontario Energy Price at 10:00 a.m. EST
$13.80 / MWh
Global Adjustment 1st Estimate (September)
$50.42/ 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.

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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 27.33
2 32.67
3 19.72
4 14.37
5 7.30
6 7.96
7 30.45
8 37.07
9 39.85
10 13.80
11 40.57
12 40.57
13 38.00
14 38.00
15 46.58
16 46.58
17 47.32
18 46.20
19 50.09
20 46.65
21 46.63
22 46.58
23 45.98
24 0.00

Ontario Demand (MW)

Actual    Projected

HE
1 12,278
2 12,035
3 11,887
4 11,717
5 12,108
6 13,062
7 14,035
8 14,502
9 14,310
10 13,979
11 14,400
12 14,450
13 14,400
14 14,400
15 14,550
16 15,400
17 15,750
18 15,850
19 16,000
20 15,850
21 15,200
22 14,250
23 13,150
24 12,400

Market Demand (MW)

Actual    Projected

HE
1 14,513
2 14,500
3 14,404
4 14,208
5 13,949
6 14,492
7 15,566
8 16,040
9 15,885
10 15,538
11 16,021
12 15,729
13 15,878
14 15,888
15 16,082
16 16,644
17 17,167
18 17,388
19 17,664
20 17,427
21 16,752
22 15,476
23 14,276
24 13,396
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
Sep 2021 50.42
Aug 2021 81.37 48.29 45.99 43.39
Jul 2021 71.62 72.84 73.60 27.58
Jun 2021 107.90 89.33 86.32 26.89
May 2021 98.51 100.66 100.54 14.63
Apr 2021 61.39 118.88 109.34 8.93
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
Date 1st 2nd Actual Rate Avg. HOEP
Sep 2021 5.04
Aug 2021 8.14 4.83 4.60 4.34
Jul 2021 7.16 7.28 7.36 2.76
Jun 2021 10.79 8.93 8.63 2.69
May 2021 9.85 10.07 10.05 1.46
Apr 2021 6.14 11.89 10.93 0.89
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
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 28 Sep 2021


Rank Date Hour Ending (EST) Ontario Demand (MW) Coincident Adjusted AQEW (MWh) *Status (Initial, Prelim, Final)
1 24 Aug 2021 17 22,986 22,428 Final
2 26 Aug 2021 15 22,740 22,358 Final
3 09 Aug 2021 17 22,428 21,813 Final
4 25 Aug 2021 17 22,360 21,719 Final
5 23 Aug 2021 17 22,309 22,055 Final
6 28 Jun 2021 18 22,258 21,678 Final
7 11 Aug 2021 17 22,042 21,516 Final
8 29 Aug 2021 17 21,930 21,415 Final
9 19 Aug 2021 17 21,788 21,382 Final
10 12 Aug 2021 18 21,734 21,240 Final

*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.