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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 12:00 a.m. EST
12,878 MW
Market Demand at 12:00 a.m. EST
15,580 MW
Hourly Output by Fuel Type at 12:00 a.m. EST
Nuclear
9,914 MW
Hydro
3,926 MW
Gas
313 MW
Wind
619 MW
Solar
0 MW
Biofuel
1 MW
Hourly Ontario Energy Price at 12:00 a.m. EST
$5.46 / MWh
Global Adjustment 1st Estimate (May)
$93.92/ 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.

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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 Icon

Price Overview

Learn about electricity price trends and gain access to historical monthly average prices, global adjustment rates and time-of-use.

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Conservation Icon

Conservation Overview

Learn about the progress made by Ontario's electricity conservation and demand response programs.

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The Market Day
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Ontario Demand (MW)

Actual    Projected

HE
1 12,300
2 11,882
3 11,677
4 11,520
5 11,420
6 11,818
7 12,608
8 13,379
9 14,029
10 14,349
11 14,912
12 15,229
13 15,419
14 16,247
15 16,609
16 17,181
17 17,583
18 17,455
19 17,250
20 16,997
21 16,857
22 16,009
23 14,896
24 13,902

Market Demand (MW)

Actual    Projected

HE
1 15,309
2 15,206
3 14,911
4 14,900
5 14,659
6 14,591
7 15,362
8 16,080
9 16,717
10 16,993
11 17,686
12 18,018
13 18,197
14 18,866
15 19,478
16 19,922
17 20,344
18 20,068
19 19,838
20 19,429
21 19,293
22 18,526
23 17,048
24 15,526
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.


Date 1st 2nd Actual Rate Avg. HOEP
Jan 2018 87.77 63.70 67.36 32.12
Feb 2018 73.33 77.05 81.67 19.01
Mar 2018 78.77 85.95 94.81 17.2
Apr 2018 98.10 100.74 99.59 29.66
May 2018 93.92
Jun 2018
Jul 2018
Aug 2018
Sep 2018
Oct 2018
Nov 2018
Dec 2018
Date 1st 2nd Actual Rate Avg. HOEP
Jan 2018 8.78 6.37 6.74 3.21
Feb 2018 7.33 7.71 8.17 1.90
Mar 2018 7.88 8.60 9.48 1.72
Apr 2018 9.81 10.07 9.96 2.97
May 2018 9.39
Jun 2018
Jul 2018
Aug 2018
Sep 2018
Oct 2018
Nov 2018
Dec 2018
Peak Tracker

Top 10 Ontario Demand Peaks from May 1, 2018 to April 30, 2019

New Ontario demand records are updated in real time. Verified Ontario demand values (AQEW) published 20 business days later.

as of 26 May 2018


Rank Date Hour Ending Ontario Demand (MW)* AQEW (MW)
1 25 May 2018 20 17,985
2 24 May 2018 20 17,172
3 26 May 2018 17 16,942
4 23 May 2018 20 16,286
5 02 May 2018 20 16,264
6 16 May 2018 20 16,167
7 14 May 2018 20 15,940
8 08 May 2018 20 15,933
9 03 May 2018 20 15,924
10 17 May 2018 20 15,904

* This column is reflected in the demand chart above