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Who We Are The Power System Demand & Price Conservation Electricity Pricing in Ontario

Ontario's Independent Electricity System Operator

System Control Room

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:

Tiered Rates

Pay the Regulated Price Plan (RPP) tiered rate set by the Ontario Energy Board.

Consumption of up to and including 1,000 kWh/month*: 8.3 ¢/kWh

more than 1,000 kWh/month: 9.7¢/kWh

* Threshold for businesses is 750 kWh/month

Time-of-Use Rates

Pay time-of-use prices that change depending on when you use electricity.

7 am to 11 am 12.9 ¢/kWh
11 am to 5 pm 10.9 /kWh
5 pm to 7 pm 12.9 /kWh
7 pm to 7 am 7.2 /kWh
Weekends 7.2 /kWh

Wholesale Prices

Pay the hourly wholesale price of electricity plus the Global Adjustment. (Available to a limited number of consumers with interval meters)

Current hourly price: -0.45/kWh
at 5:00 a.m. EDT

See also Monthly Average Prices

Retail Contracts

Pay a negotiated retail contract price plus the Global Adjustment.

The Global Adjustment for the month of
October is 7.49 ¢/kWh

See also Global Adjustment FAQ

Not sure which price you are paying? Click here to find out more.


Energy Saving Tips
Here are some simple ways to cut your electricity use.

Public Appeals
Extreme weather or an unexpected loss of supply, can lead the IESO to call Public Appeals to reduce energy use.

Your questions about Ontario's electricity system answered.

Smart Meters and Time-Of-Use Rates
Soon, all Ontario consumers will have made the switch to time-of-use (TOU) rates, where the price of electricity depends on when it is used. Learn more about TOU rates and how your smart meter works.

Consumers also have the option of fixing their electricity price through a retail contract.

Other Electricity Charges
The commodity cost represents roughly half of your overall electricity charge, here are explanations of the others.

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.


8:00 pm


25,641 MW

Read the IESO and OPA's report to the Minister of Energy on regional planning and siting of large energy infrastructure



Questions about your bill or energy efficiency? Contact your local utility for assistance.

For information about changes in the electricity sector, contact the Ministry of Energy.

To learn more about rates, licensing and retailers, contact the Ontario Energy Board.

The IESO also provides information about the market.
Toll Free: 1-888-448-7777
Tel: 905-403-6900