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Time-of-Use Rates for Electricity

With Time-of-Use prices, the price of electricity depends on when you use it.

There are three different Time-of-Use prices. These prices are set by the Ontario Energy Board and are reviewed every May 1 and November 1.

Time-of-Use rates effective May 1, 2017 are as follows:

  • On-peak (11 AM to 5 PM weekdays) = 15.7 cents per kWh
  • Mid-peak (7 AM to 11 AM and 5 PM to 7 PM weekdays) = 11.3 cents per kWh
  • Off-peak (7 PM to 7 AM weekdays & weekends/holidays) = 7.7 cents per kWh 

Time-of-use prices reflect the fact that the cost to provide electricity changes throughout the day. When demand is low, less expensive sources of electricity are used. When demand rises, more expensive forms of electricity production are called upon, making prices higher. 

Time-of-Use Time Periods. Information within this image is also described within the content of this page.

Summer Rates

In summer, from May 1 to October 31, on-peak prices apply from 11 AM to 5 PM, reflecting the demand for power for air conditioning.

Winter Rates

In winter, from November 1 to April 30, on-peak prices apply in the morning from 7 AM to 11 AM and evening from 5 PM to 7 PM, when electricity use increases for heating and lighting.

Holiday Rates

During weekends and statutory holidays, all hours of the day are off-peak. 

Time-of-Use Off Peak Holiday Schedule

Consult the Time-of-Use Holiday Schedule to learn which holidays are off-peak

Time-of-Use CalculatorsImage of Kilowatt Way

Try out this interactive tool to show you how much it will cost you to run various appliances and electronic devices at various times of day under Time-of-Use rates.

Time-of-Use Rates for Electricity - FAQs

Guelph Hydro residential and small commercial customers in Guelph had their smart meter installed and were switched over to Time-of-Use rates for electricity during the summer and fall of 2011.* Rockwood customers were switched over in 2012 and 2013*.

*Customers who purchase electricity on a contract with an energy retailer, follow the terms and prices stated in their contract. Visit the following websites for information about smart meters and Time-of-Use pricing for electricity.

Additional information....please select a brochure below

Questions? If you have any questions about Time-of-Use rates for electricity, please contact our Customer Service Department at 519.822.3010 or email:

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