Related Information

Forecast

Transition Market Information

This transition market information contains a wealth of data about Ontario electricity demand and infrastructure, including daily primary demand reports back to 1998, load profiles and forecasts. Learn more about the Transition Market Information Team responsible for making this information available.

Note: The Transition Market Information pages contain operating information during the transition period leading up to the opening of the Market (May 1, 2002). For market information please view the Today�s Market, Market Data and Market Summaries pages.

A revised Transition Information Team report is available with a description of OPGI's Ring-Fencing effort. See Final Report with Ring-Fencing Addendum (PDF).

Reports

Operational Data

Financial Data

Environmental

Governance

Demand

Generation

Transmission

Historic

Daily Summary
IESO AGC Daily Report
Operating Reserve
Summary of System Operations - Statistics
NUG Report
Aggregated Production (Year 2000 data available)
Generation Type at the Margin (Year 2000 data available)
Nuclear Report Card (Year 2000 data available)
Aggregated Production Capability
Aggregated Unavailable Capacity
Weekly Generation by Generation Type (Year 2000 data available)

Daily Summary^*

Report contents: Daily weather conditions, primary demand by system in terms of peak demand and energy, and secondary sales total.
To view the report: select year, month and day; then click GO button.
Note: daily report, posting to web delayed 1 day.

IESO AGC Daily Report^*

Report contents: Unit status on generators providing Automatic Generation Control (AGC).
To view the report: select year and month; then click GO button.
Note: only the first day of each month is available.

Operating Reserve^*

Report contents: Operating reserve requirements at the AM and PM peaks in the day, and generation sources of operating reserve by fuel type.
To view the report: select year and month; then click GO button.
Note: only the first day of each month is available.

Summary of System Operations - Statistics^*

Report contents: Weekly load, generation, reserve, and interconnected transactions only.
To view the report: select year, month and day; then click GO button.
Note: weekly report, posting to web delayed one month.

NUG Report

Report contents: Capacity, fuel type, in-service dates, contract terms assembled by NUG contract.
To view the report: select year; then click GO button.

Aggregated Production

Report contents: Hourly sum of OPG + NUG generation.
Report format: Comma Separated Values (CSV).
To download the report: select year; then click Download button.

Generation Type at the Margin

Report contents: Source of OPG generation (hydro, nuclear, coal, oil, oil/gas) on the margin at the peak of the week.
Report format: Comma Separated Values (CSV).
To download the report: select year; then click Download button.

Nuclear Report Card

Report contents: Nuclear performance measured against various performance targets including capability factor, performance index, reactor trip rate, safety, environment.
To view the report: select year and month; then click GO button.
Note: Reports now available for calendar year 2000.

Aggregated Production Capability

Report contents: OPG and NUG capacity available at the hour peak Ontario demand in the week, for each week in 1998.

Aggregated Production Capability (PDF: 8 KB / 2 pages)

Aggregated Unavailable Capacity

Report contents: OPG and NUG capacity not available at time of peak Ontario demand, including units that are unavailable for any reason excluding mothballed capacity, unstaffed, or locked in.

Aggregated Unavailable Capacity (PDF: 8 KB / 2 pages)

Weekly Generation by Generation Type

Report contents: Weekly energy production in Ontario by generation type (hydro, nuclear, coal, oil/gas).
To view the report: select year; then click GO button.

* Preliminary information - information subject to change without notice.