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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 9:00 p.m. EST
18,599 MW
Market Demand at 9:00 p.m. EST
20,081 MW
Hourly Output by Fuel Type at 9:00 p.m. EST
Nuclear
10,243 MW
Hydro
4,754 MW
Gas
2,872 MW
Wind
167 MW
Solar
0 MW
Biofuel
32 MW
Hourly Ontario Energy Price at 9:00 p.m. EST
$39.28 / MWh
Global Adjustment 1st Estimate (August)
$81.37/ 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 20.67
2 17.76
3 21.04
4 29.29
5 24.30
6 21.07
7 25.20
8 27.31
9 35.03
10 35.06
11 35.37
12 37.13
13 36.96
14 38.62
15 39.50
16 44.72
17 50.63
18 42.05
19 38.51
20 37.23
21 39.28
22 38.73
23 38.34
24 32.39

Ontario Demand (MW)

Actual    Projected

HE
1 13,349
2 12,830
3 12,508
4 12,445
5 12,748
6 13,318
7 14,254
8 15,148
9 15,851
10 16,550
11 17,236
12 17,811
13 18,273
14 18,646
15 18,751
16 19,432
17 20,348
18 20,267
19 19,783
20 19,064
21 18,599
22 17,400
23 15,800
24 14,550

Market Demand (MW)

Actual    Projected

HE
1 15,039
2 14,846
3 14,534
4 14,461
5 14,752
6 15,275
7 15,970
8 16,815
9 17,536
10 18,015
11 18,622
12 19,284
13 19,742
14 20,170
15 20,376
16 21,238
17 22,110
18 22,010
19 21,188
20 20,544
21 20,081
22 19,028
23 17,324
24 16,342
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
Aug 2021 81.37
Jul 2021 71.62 72.84
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
Sep 2020 115.73 127.92 121.76 14.38
Date 1st 2nd Actual Rate Avg. HOEP
Aug 2021 8.14
Jul 2021 7.16 7.28
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
Sep 2020 11.57 12.79 12.18 1.44
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 4 Aug 2021


Rank Date Hour Ending (EST) Ontario Demand (MW) Coincident Adjusted AQEW (MWh) *Status (Initial, Prelim, Final)
1 28 Jun 2021 18 22,258 21,678 Final
2 29 Jun 2021 12 21,711 21,319 Final
3 06 Jul 2021 17 21,655 21,297 Final
4 14 Jul 2021 17 21,368 20,970 Prelim
5 07 Jun 2021 17 21,340 20,791 Final
6 09 Jun 2021 17 21,157 20,737 Final
7 15 Jul 2021 17 20,971 20,365 Prelim
8 05 Jul 2021 17 20,952 20,598 Final
9 27 Jun 2021 18 20,904 20,306 Final
10 19 Jul 2021 16 20,849 20,375 Prelim

*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.