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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 5:00 p.m. EST
15,649 MW
Market Demand at 5:00 p.m. EST
17,459 MW
Hourly Output by Fuel Type at 5:00 p.m. EST
Nuclear
8,852 MW
Hydro
4,575 MW
Gas
1,588 MW
Wind
1,516 MW
Solar
91 MW
Biofuel
51 MW
Hourly Ontario Energy Price at 5:00 p.m. EST
$46.05 / MWh
Global Adjustment 1st Estimate (October)
$66.43/ MWh
Ontario Demand
Market Demand
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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 11.62
2 14.37
3 25.56
4 16.62
5 31.25
6 41.57
7 89.05
8 44.80
9 44.78
10 44.55
11 44.59
12 44.01
13 43.34
14 30.82
15 38.90
16 41.15
17 43.95
18 46.39
19 47.22
20 46.00
21 43.11
22 43.30
23 36.76
24 14.00

Ontario Demand (MW)

Actual    Projected

HE
1 11,783
2 11,629
3 11,526
4 11,864
5 12,478
6 13,720
7 15,103
8 15,289
9 14,941
10 14,697
11 14,375
12 14,049
13 13,898
14 13,858
15 14,051
16 14,681
17 15,649
18 16,250
19 16,400
20 15,900
21 15,200
22 14,050
23 13,100
24 12,400

Market Demand (MW)

Actual    Projected

HE
1 13,792
2 13,699
3 14,068
4 14,350
5 15,043
6 16,184
7 17,231
8 17,057
9 17,000
10 16,837
11 16,816
12 16,417
13 16,133
14 16,053
15 16,058
16 16,787
17 17,459
18 18,156
19 18,290
20 18,185
21 17,357
22 16,196
23 15,296
24 14,609
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
Oct 2021 66.43
Sep 2021 50.42 65.82 75.65 30.68
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
Date 1st 2nd Actual Rate Avg. HOEP
Oct 2021 6.64
Sep 2021 5.04 6.58 7.57 3.07
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
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 19 Oct 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.