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Summer Time-of-Use Hours & Summer Tiered Threshold effective from May 1, 2024

May 1, 2024

On May 1, 2024, summer Time-of-Use (TOU) hours and the change in the Tiered threshold for residential customers under the OEB’s Regulated Price Plan (RPP) will take effect and remain in place until October 31, 2024. Electricity prices for both price plans and the Ultra-Low Overnight (ULO) price plan remain unchanged.

The Time-of-Use, Tiered Regulated and Ultra Low Overnight Price Plan prices, as set by the Ontario Energy Board, are shown in the table below as well as the Summer hours and thresholds during which those prices apply:

Summer TOU PricesTOU prices
Off-Peak
Weekdays 7 p.m. – 7 a.m., all day weekends and holidays		8.7 ¢/kWh
Mid-Peak
Weekdays 7 a.m. – 11 a.m. and 5 p.m. – 7 p.m.		12.2 ¢/kWh
On-Peak
Weekdays 11 a.m. – 5 p.m.		18.2 ¢/kWh
Summer Tier ThresholdsTiered prices
Tier 1Residential – first 600 kWh/month*
Non-residential – first 750 kWh/month		10.3 ¢/kWh
Tier 2Residential – for electricity used above 600 kWh/month*
Non-residential – for electricity used above 750 kWh/month		12.5 ¢/kWh
* Note Residential threshold decreased from 1,000 kWh (winter) to 600 kWh (summer)
ULO PeriodsULO Prices
ULO Ultra-Low Overnight
Every day 11 p.m. – 7 a.m.		2.8 ¢/kWh
Off-Peak
Weekends and holidays 7 a.m. – 11 p.m.		8.7 ¢/kWh
Mid-Peak
Weekdays 7 a.m. – 4 p.m. and 9 p.m. – 11 p.m.		12.2 ¢/kWh
On-Peak
Weekdays 4 p.m. – 9 p.m.		28.6 ¢/kWh

About TOU and Tiered Pricing under the RPP
RPP prices are set based on a forecast of how much it will cost to supply RPP customers with the electricity they are expected to use over the next 12 months. Any variance between forecast and actual costs, whether a surplus or shortfall, is factored into the next price-setting. Prices are going down due to a surplus that has accumulated.
TOU, Tiered and ULO prices are set so that both recover the same forecast average cost of supply for a typical customer.

If you’re a residential or small business customer, you can choose to switch between Time-of-Use (TOU) Tiered prices and Ultra Low Overnight (ULO):

  • With TOU and ULO pricing, the price depends on when customers use electricity. This means customers can help manage their electricity costs by shifting their usage to lower price periods when possible.
  • Under Tiered pricing, a customer can use a certain amount of electricity each month at a lower price. A higher price applies to electricity used above that limit. In the winter period (November 1 – April 30), the Tier threshold for residential customers is 1,000 kWh, so that during the heating season households can use more power at the lower price. In the summer period (May 1 – October 31), the Tier threshold for residential customers is 600 kWh. The Tier threshold for non-residential customers is 750 kWh all year round

More information can be found at Customer Choice or at the Ontario Energy Board’s website oeb.ca/choice

Ontario Electricity Rebate (OER)
The Ontario Electricity Rebate (OER) is an on-bill credit to eligible consumers including residential customers, small business and farms.
The Government of Ontario set the OER at 19.3% effective November 1, 2023 to ensure the average residential bill increase is held to about 2% annually.