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  • Ontario’s Electricity Hub

    Ontario's Electricity Hub

    The IESO offers services, information and analysis to support Ontario's diverse electricity system. A central hub connecting its many stakeholders, the IESO reliably operates the system in real time, while ensuring its extensive planning, conservation, market and procurement capabilities serve the province's long-term needs.

  • Power to Ontario. On Demand.

    Power to Ontario.
    On Demand.

    Every five minutes, the IESO forecasts the demand for electricity and ensures sufficient supply to meet that demand. It does this through the wholesale market where the price of electricity is set.

  • Planning and Procurement

    Planning and Procurement

    The IESO works with a broad range of industry partners and stakeholders across the province to plan the electricity system for the long term, and secure clean electricity resources.

Conservation

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Photo of man setting thermostat

Working with our partners, the IESO guides the province's electricity conservation efforts by supporting programs that foster a culture of conservation, build market capability and promote innovation.

Save on Energy programs

Conservation First​​​

Power What's Next​​​


Ontario's Power System

Photo of street scene in Ontario
Learn about Ontario's power system – from the types of generation used and how the province plans for the future to pricing and what it takes to maintain a reliable system.

Ontario's Power System

Managing a Reliable Grid

Find your Local Distribution Company

Power System Planning »


Power Data


DEMAND

15,854 MW

Current Hour's Demand at 06:00 a.m. EST

  • 17,091 MW
    Projected Demand
    at 8:00 a.m. EDT
  • 21,941 MW
    Today's Projected Peak
    at 5:00 p.m. EST
  • 27,005 MW
    Summer Record Peak
    Aug 1, 2006


THURSDAY,  AUGUST  25, 2016


SUPPLY

Hourly Output by Fuel Type at 06:00 a.m. EST

  • 1,791 MW
    Hourly Imports
  • 2,749 MW
    Hourly Exports
  • 23,720 MW
    Generator Availability at Peak
    at 5:00 p.m. EST


EMBEDDED GENERATION

Installed capacity of wind ​and solar generation connected to local distribution systems.

  • 1,876 MW
    Solar
  •          489 MW
    Wind
  • as of March 31, 2016

PRICE

1.95 ¢/kWh

Current Hourly Price at 06:00 a.m. EST

Hourly Ontario Energy Price ($/MWh)

Created with Highcharts 4.0.1ProjectedActualHour3691215182110203040
  • 2.34¢/kWh
    Average Weighted Price
    for July
  • 8.31¢/kWh
    Global Adjustment
    for July

About the IESO

The IESO ensures there is enough power to meet the province’s real-time energy needs while also planning and securing energy for the future.

About the IESO

Board of Directors ​​

Leadership Team ​​

Corporate Reporting ​​


Image of IESO Staff at a table 

Engagement at the IESO

Stakeholder and community engagement is integral to the IESO’s decision-making process – providing individuals and organizations opportunities to provide input about proposed changes that affect them.

Image of people in a meeting