Media Advisory - Heat and Humidity Have a Significant Impact on Ontario's Electricity Demand

    TORONTO, July 16 /CNW/ - On a hot summer day, humidity can increase
electricity demand by more than 3,000 megawatts (MW) or 15 per cent due to the
increase in air conditioning. This increase in electricity use is equivalent
to adding the needs of a city twice the size of Mississauga to the provincial
power system.
    Ontario's Independent Electricity System Operator (IESO) will provide a
briefing for broadcast meteorologists and weather reporters about the
significant impacts weather can have on electricity use. A tour of the Control
Room that manages Ontario's electricity needs every day of the year will

    Date:        Friday, July 18, 2008
    Time:        9:00 a.m. - 10:30 a.m.
    Location:    Mississauga - Location to be provided with R.S.V.P.

    The IESO is responsible for managing Ontario's bulk electricity system
and operating the wholesale electricity market. For more information, visit
    For location details please R.S.V.P. to Alexandra Campbell at (416)
452-2133 or

For further information:

For further information: Alexandra Campbell, (416) 452-2133

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