Understand My Bill

Ultra-Low Overnight (ULO) Pricing Plan

Click on any grey highlighted portion of the sample ULO bill pages for more details about that specific section or line item. Switch between Page 1 and Page 2 of the sample bill using the underlined links below.

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My Rates Explained

What goes into my Residential Ultra-Low Overnight (ULO) bill?

There are two main factors used to calculate your electricity bill:
Your Price Plan

Introduced in Summer 2023, customers who use more electricity at night — such as EV owners with home chargers — can now take advantage of the lowest overnight price per kWH. The new plan has four pricing periods: Weekday On-peak, Mid-peak and Ultra-Low Overnight, and Weekend Off-peak — year-round. We bill you these electricity prices on behalf of generators with no mark-up for profit.

For more information on ULO prices and demand time periods, visit our Electricity Prices page.

Your Rate Class

Your rate class (also known as service type) determines the rates that you pay for delivery. When assigning you to the proper rate class, we consider the nature and use of your electricity service, as well as the customer density in your area.

For a full explanation of the different service types and how Delivery rates are determined, visit our Rate Classes and Residential Delivery Rates pages.

Where does my electricity dollar go?

Although we bill you for the other line items on your bill, the money collected from your bill goes to several different corporations, regulators and independent generators that make up Ontario’s deregulated electricity market. This breakdown of where your electricity dollars go can be seen in more detail by visiting our Residential Rates and Charges page.

What does metered and adjusted usage mean?

Metered usage in kilowatt-hours is the amount of electricity you used in kilowatt-hours (kWh). It is calculated by taking the difference in meter readings and multiplied, if applicable, by the multiplier indicated on your meter.

Adjusted usage in kilowatt-hours is the amount of electricity you used in kWh adjusted to cover the line losses in the electricity system that are not measured by your meter. When electricity is transmitted over long distances and passes through wires and transformers, it’s normal for a small amount of power to be used or lost as heat. For example, if we deliver 1,000 kWh to you, we must purchase a small amount more than what you use. To determine the amount of electricity we need to buy for you, we use a calculation called an “adjustment factor.” The adjustment factor is approved by the Ontario Energy Board and varies according to your service type.