Time-of-Use Rates

TOU rates and periods - effective November 1, 2020


Main Office
526 Country Squire Rd.
P.O. Box 640
Waterloo, ON
N2J 4A3

Phone: 519-886-5090
Fax: 519-746-0133

Most of our customers pay Ontario Energy Board set time-of-use electricity prices. Time-of-use divides the day into three rate periods:

  • Off-peak, when demand for electricity is lowest.
  • Mid-peak when demand for electricity is moderate.
  • On peak when demand for electricity is highest.

The rate you pay for electricity in each of these periods reflects the costs of supplying electricity at that time of day. When demand for electricity is lower, electricity is less expensive. More expensive sources of electricity are used when demand is higher, which in turn makes the price higher.

There is both a Winter and Summer schedule for Time-of-use pricing which are set by the Ontario Energy Board and are reviewed every May 1 and November 1.  The Ontario Energy Board reviews rates every 6 months. For additional information on time-of-use pricing and time periods, visit the Ontario Energy Board Web site.

Would you like to learn more about Time-of-Use pricing? Read our Time-of-Use Rates Fact Sheet for the answer to any questions you may have. Download your copy  here.

Winter Time - of - Use Rates - Effective November 1, 2020

Off-Peak | 10.5 ¢/kWh - Weekdays 7:00 pm to 7:00 am and All Day on Weekends & Holidays

Mid-Peak | 15.0 ¢/kWh -  Weekdays 11:00 am - 5:00 pm

On-Peak | 21.7 ¢/kWh - Weekdays 7:00 am - 11:00 am  and 5:00 pm - 7:00 pm

Time-of-use Calculator

Visit the smart house at Kilowatt Way and learn how shifting your electricity use makes sense.

Historic Time-of-use Rates

View historic time-of-use rates.

For more information on Time-of-use rates visit the IESO's website.

Current Time-of-Use Rates - Frequently Asked Questions

Q1. What is being done to support households and businesses with increased electricity usage during this COVID-19 outbreak?

The government of Ontario has extended emergency rate relief for time-of-use (TOU) electricity customers until May 31, 2020. Households, farms and small businesses paying TOU electricity rates will continue to be charged the lowest price, known as the off-peak electricity rate, 24 hours a day, 7 days a week until May 31, 2020. 

Starting June 1, 2020, the government of Ontario has introduced a “COVID-19 Recovery Rate” of 12.8¢/kWh for TOU Regulated Price Plan (RPP) customers to provide stability and predictability for families, small businesses and farms. This rate is equal to the forecasted average RPP supply cost, calculated by the Ontario Energy Board last October, for the twelve months starting November 1, 2019. This rate, subject to approvals, is intended to be in effect until October 31, 2020. 

The government of Ontario will be looking to the Ontario Energy Board to develop, in consultation with distributors and other stakeholders as appropriate, the rules under which distributors will be required to offer their TOU customers the option to choose between TOU and tiered prices by November 1, 2020, so that Ontarians would be able to pick the electricity pricing approach that works best for them. 

Q2. Will customers be able to switch rate plans before November 1, 2020?

The government recognizes that some TOU customers may prefer to revert to typical TOU pricing with peak/mid-peak/off-peak rates before November 1, 2020. However, ENDM is proposing to introduce customer choice as of November 1, 2020. 

Q3. What’s the difference between TOU and tiered electricity rates?

TOU rates vary according to when electricity is used. They are cheapest when demand is lowest: during the evenings, on weekends and on holidays. 

The TOU pricing periods are:

  • Off-peak, when demand for electricity is typically lowest. Ontario households and small businesses typically use the majority of their electricity – nearly two thirds of it – during off-peak hours.
  • Mid-peak, when demand for electricity is moderate. These periods are during the daytime, but not the busiest times of day.
  • On-peak, when demand is generally highest. These are the busiest times of day, generally when people are cooking, starting up their computers and running heaters or air conditioners. 

One of the purposes of TOU pricing is to give customers a financial incentive to reduce their electricity use during peak times. This helps to smooth out demand peaks and lowers overall system costs by reducing the need for more generation capacity. 

A small percentage of customers (less than 5 per cent) are charged tiered prices. Tiered price customer either don’t have a smart electricity meter that can track the time of day electricity is used, or live in certain areas that do not have the communications infrastructure to electronically transmit consumption data. 

Tiered prices are the same regardless of time of day but become more expensive if a customer’s overall electricity use goes above a set threshold. The current threshold for residential customers is 1000 kWh per month following a decision by the Ontario Energy Board on April 14th to not implement the summer threshold, which is 600kWh.

Q5: Where Can I Get More Information?

For more information on TOU rates, please visit the OEB's website at www.oeb.ca. For details on the current TOU pricing and upcoming changes to rates, please click here.