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Ultra-Low Overnight Pricing

About Ultra-Low Overnight Pricing

With the Ultra-Low Overnight (ULO) price plan, there are four price periods: On-peak, Mid-peak, Weekend Off-peak, and Ultra-Low Overnight. 

The ultra-low overnight period is between 11:00 p.m. to 7:00 a.m. every day, when demand for electricity is lowest on average, and there is a higher on-peak price for consumption between 4:00 p.m. to 9:00 p.m. on weekdays, when demand is usually higher.

The ULO price periods are the same all year round. With ULO pricing, you can help manage your electricity costs by shifting high usage activities, like electric vehicle charging, to lower price periods when possible.

ULO rates are set by the Ontario Energy Board.

  • For Time-of-Use Pricing, Tiered Pricing, and Ultra-Low Overnight Pricing, Alectra Utilities passes this cost through to you, without mark-up, and pays it directly to our suppliers.
  • Customers who have signed a contract with an energy retailer pay the price stated in their contract plus the Global Adjustment.

Current Ultra-Low Overnight Rates

November 01, 2023 - October 31, 2024

ULO On-Peak
28.6 ¢/kWh
ULO Mid-Peak
12.2 ¢/kWh
ULO Off-Peak
8.7 ¢/kWh
ULO Ultra-Low Overnight
2.8 ¢/kWh


Weekday Ultra Low Overnight Pricing Bar Chart by Ontario Electricity Board
Weekend & Statutory Holidays


Weekend Ultra Low Overnight Pricing Bar Chart by Ontario Electricity Board
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Residential and Small Business customers can choose from three pricing options: Time-of-Use Pricing, Tiered Pricing, or Ultra-Low Overnight Pricing.

You can find more information on how to Choose Your Rate Option to help you make an informed choice about which electricity price plan is right for you.

ULO Pricing - November 1, 2023 - October 31, 2024
ULO Pricing - May 1, 2023 - October 31, 2023
2023 Holiday Schedule for ULO Prices

Electricity used on weekends and holidays is charged the off-peak price during both the winter and summer periods. Off-peak prices are in effect on the following 2023 holidays:



New Year's Day

Family Day

Good Friday

Victoria Day

Canada Day

Civic Holiday

Labour Day

Thanksgiving Day

Christmas Day

Boxing Day

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