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Ontario's Independent Electricity System Operator
The IESO manages Ontario's electricity system and operates the wholesale electricity market.
It forecasts the demand for electricity and ensures that there are available supplies to meet that demand.
More than half of all electricity consumed by this province is paid for at wholesale rates.
Most lower use consumers, such as homeowners and small businesses, pay the regulated rate that is revised every six months based on market and contract prices paid to generators.
Electricity Prices in Ontario
There are four different price structures for homeowners and small businesses:
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Tiered Rates
Pay the Regulated Price Plan (RPP) tiered rate set by the Ontario Energy Board.
Consumption of up to and including 1000 kWh/month*:
5.8 ¢/kWh
more than 1000 kWh/month:
6.7¢/kWh
* Threshold for businesses is 750 kWh/month
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Time-of-Use Rates
Pay time-of-use prices that change depending on when you use electricity.
By spring 2011, the majority of Ontarians will be moved from the tiered rate to the time-of-use rate.
| Weekdays |
| 7 am to 11 am |
9.3 ¢/kWh |
| 11 am to 5 pm |
8.0 ¢/kWh |
| 5 pm to 9 pm |
9.3 ¢/kWh |
| 9 pm to 7 am |
4.4 ¢/kWh |
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| Weekends |
4.4 ¢/kWh |
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Not sure which price you are paying? Click here to find out more.
TAKING CONTROL OF YOUR ELECTRICITY USE
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Public Appeals
Extreme weather or an unexpected loss of supply, can lead the IESO to call Public Appeals to reduce energy use.
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FAQs
Your questions about Ontario's electricity system answered.
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Smart Meters and Time-Of-Use Rates
Most customers served by Milton Hydro and Newmarket-Tay Hydro have started paying Time-of-Use rates. Toronto Hydro, Powerstream and Horizon Utilities will soon follow, and a majority of Ontario consumers will be paying time-of-use rates by 2011.
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Retailers
Consumers also have the option of fixing their electricity price through a retail contract.
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Other Electricity Charges
The commodity cost represents roughly half of your overall electricity charge, here are explanations of the others.
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Speakers' Bureau
Learn more about issues concerning Ontario's electricity system and how to better manage your energy
costs. Arrange for an IESO speaker or trade booth by e-mailing
Corporate Communications.
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TODAY'S PROJECTED PEAK AT
8:00 pm
Generator Availability at Peak
26,720 MW
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Wholesale Prices
Retail Contracts
